From 92351a70e0b9193a1def156a470d9156beb8528b Mon Sep 17 00:00:00 2001 From: Qt by Nokia Date: Wed, 27 Apr 2011 12:34:00 +0200 Subject: Long live the qt5 Qt repository --- .../contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog | 21115 +++++++++++++++++++ 1 file changed, 21115 insertions(+) create mode 100644 gnuwin32/contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog (limited to 'gnuwin32/contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog') diff --git a/gnuwin32/contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog b/gnuwin32/contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog new file mode 100644 index 00000000..f28a8478 --- /dev/null +++ b/gnuwin32/contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog @@ -0,0 +1,21115 @@ +2008-12-11 Joel E. Denny + + Version 2.4.1. + * NEWS: Set version and date. + * lib/Makefile.am: Update copyright year. + * tests/atlocal.in: Update copyright year. + +2008-12-11 Joel E. Denny + + Semicolon feature removal is not about future language support. + * NEWS: The semicolon feature is no longer active for newer languages, + so don't claim that it causes trouble for them. + +2008-12-11 Joel E. Denny + + * gnulib: Update submodule to HEAD. + +2008-12-09 Akim Demaille + + Update data/README. + * data/README: Document glr.cc, lalr1.java, m4sugar and xslt. + +2008-12-05 Eric Blake + + Build testsuite with newer autoconf. + * tests/output.at (m4_expand): Don't override in newer autoconf, + where the underlying implementation changed. + * tests/cxx-type.at (_AT_RESOLVED_GLR_OUTPUT) + (_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT) + (_AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR) + (_AT_VERBOSE_GLR_STDERR): Expand to double-quoted strings, + since some of them contain unbalanced ')'. + +2008-11-19 Joel E. Denny + + * NEWS: Clarify a little. + +2008-11-19 Joel E. Denny + + * NEWS: Update for recent changes. + +2008-11-18 Joel E. Denny + + Fix unexpanded macros in GLR defines file. + Reported by Csaba Raduly at + . + * THANKS (Csaba Raduly): Add. + * data/glr.c: Fix overquoting on b4_prefix for yylval and yylloc. + * tests/calc.at (_AT_DATA_CALC_Y): If %defines is specified, generate + lexer in a separate module that includes the defines file. + (AT_CHECK_CALC): Use AT_FULL_COMPILE and request compilation of lexer + source. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_DEFINES_IF. + Adjust AT_LOC and AT_VAL to use AT_NAME_PREFIX. + (AT_BISON_OPTION_POPDEFS): Pop AT_DEFINES_IF. + (AT_DATA_SOURCE_PROLOGUE): New. + (AT_DATA_GRAMMAR_PROLOGUE): Use AT_DATA_SOURCE_PROLOGUE. + (AT_DATA_SOURCE): New. + (AT_FULL_COMPILE): New, copied from master branch and extended to + support an additional source file. + +2008-11-17 Joel E. Denny + + Don't let maintainer-*-check targets force a version update. + * cfg.mk (_is-dist-target): Implement. maintainer-check* was already + handled. + +2008-11-17 Di-an Jan + + * doc/bison.texinfo: Synchronize ``Detail Node Listing''. + Align menus. Adjust word wrapping. Use node names for menu names. + (Examples): Don't abbreviate node names. + (LocalWords): Remove abbreviations. + (Copying): Make description a sentence. + (Java Action Features): Remove period to match the rest of menu. + +2008-11-11 Paolo Bonzini + + * bootstrap.conf: Replace m4/warning.m4 with warnings module. + * configure.ac: Adjust usage. + * lib/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS). + * src/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS). + * tests/atlocal.in: Replace $(WARNING_*FLAGS) with $(WARN_*FLAGS). + +2008-11-07 Joel E. Denny + + Don't add a semicolon to actions for %skeleton or %language. + It breaks Java test cases as reported by Akim Demaille. + * src/scan-code.l: Implement. + +2008-11-07 Joel E. Denny + + Clean up %skeleton and %language priority implementation. + * src/getargs.c (skeleton_prio): Use default_prio rather than 2, and + remove static qualifier because others will soon need to see it. + (language_prio): Likewise. + (getargs): Use command_line_prio rather than 0. + * src/getargs.h (command_line_prio, grammar_prio, default_prio): New + enum fields. + (skeleton_prio): Extern it. + (language_prio): Extern it. + * src/parse-gram.y: Use grammar_prio rather than 1. + +2008-11-04 Akim Demaille + + * NEWS: Mention the trailing semicolon in action. + +2008-11-04 Akim Demaille + + Reformat NEWS. + * NEWS: Use more outline-mode markup. + Suggested by Jim Meyering. + +2008-11-04 Joel E. Denny + + Fix user actions without a trailing semicolon. + Reported by Sergei Steshenko at + . + * THANKS (Sergei Steshenko): Add. + * src/scan-code.l (SC_RULE_ACTION): Fix it. + * tests/regression.at (Fix user actions without a trailing semicolon): + New test case. + +2008-11-02 Joel E. Denny + + Initiate further development. + * NEWS: Create an empty section for new entries. + * gnulib: Update submodule to HEAD. + +2008-11-02 Joel E. Denny + + * NEWS: Version 2.4. + +2008-11-02 Joel E. Denny + + Prepare for next release. + * NEWS: Briefly mention changes since 2.3b. + * README: Say GNU m4 1.4.6, which we've been requiring in release + announcements already, not 1.4.3, which breaks the build. + +2008-11-02 Joel E. Denny + + Say %language is experimental. + We're thinking of extending it's effect on output file naming. See the + thread at + . + * NEWS: Say it's experimental. + * doc/bison.texinfo (Decl Summary): Say it's experimental, and so don't + recommend it over %skeleton for now. + (Bison Options): Likewise. + (C++ Bison Interface): Use %skeleton not %language. + (Calc++ Parser): Use %skeleton not %language. + * src/getargs.c (usage): Say it's experimental. + +2008-11-01 Di-an Jan + Paolo Bonzini + + Support all Java parser class modifiers. + * data/java.m4 (b4_percent_define_get3): New. + (b4_final_if, b4_strictfp_if): New. + * data/lalr1.java (final, strictfp, extends, implements): Support. + * doc/bison.texinfo (final, strictfp, extends, implements): Add + documentation. + * tests/java.at (AT_CHECK_JAVA_MINIMAL): New. + (AT_CHECK_JAVA_MINIMAL_W_LEXER): New. + (AT_CHECK_JAVA_GREP): New. + (Java parser class modifiers): New test. + (Java parser class extends and implements): New test. + + Model exception propagation better with throws and lex_throws. + * data/java.m4 (b4_list2): New. + (throws): Change default. + * data/lalr1.java (yyaction): Add throws. + (parse): Add lex_throws in addition to throws. + * doc/bison.texinfo (throws, lex_throws): Add documentation. + * tests/java.at (Java throws specifications): New test. + + Improve documentation for Java parsers. + * doc/bison.texinfo (Java Parsers): Add subsections. + Don't quote first argument of %define. + (Java Bison Interface): Document output files. Move documentation + of parser class and merge into Java Parser Interface. Document + features that error out. Document directives with no effect. + Move note about Javadoc higher. + (Java Semantic Values): Explicitly mention stype. + Document that generic types cannot be used. + (Java Location Values): Use @deftypeivar. Document constructors. + Correct return value for toString. + (Java Parser Interface): List undocumented constants/fields. + Move documentation of fields added by %parse-param closer to list + of members. Document that token names are added as fields. + Document constructors accurately. Remove error method. + (Java Scanner Interface): Move note on %pure-parser to Java Bison + Interface. Describe %code lexer and yylex accutately. + Remove documentation that does not match the code. + (Java Action Features): New. + (Java Differences): Add reference. Add item on semantic values. + Add note about @{ ... @}. Clarify %% epilogue placement. + (Java Declarations Summary): New. + + Fix Java skeleton. + * data/java.m4 (b4_prefix): Correct quoting for m4_define_default. + (b4_remove_comma): Quote test argument. + (b4_identification): Remove "bison" field. + * tests/java.at (Java parser class and package names): New test. + (Java %parse-param and %lex-param): New test. + (Java stype, position_class and location_class): New test. + +2008-10-31 Di-an Jan + + * data/lalr1.jave: Update copyright years. + (YYParser): Correct name of "generated from" file in Javadoc: + use b4_file_name instead of @ofile@. + (Location constructor): Correct Javadoc parameter name. + (yylloc): Add missing opening m4 quote after b4_location_if. + This removes a stray [ in the Javadoc of Lexer.getStartPos. + (Lexer.yyerror): Fix incorrect m4 and Javadoc. + (YYParser constructor): Correct Javadoc parameter name. + +2008-10-30 Joel E. Denny + + Always put auxiliary code files in the same dir as other output files. + * src/files.c (compute_file_name_parts): When the user specifies + --output but not --file-prefix, extract the directory prefix from the + file prefix not from the grammar file name. This affects the location + of files like location.hh generated by the C++ skeleton. The includes + in the other output files require this fix. + * tests/output.at (AT_CHECK_OUTPUT): Automatically create directories + for expected output files. + (Output files): Add a test for the above. + +2008-10-29 Joel E. Denny + + * gnulib: Update submodule to HEAD. + +2008-10-28 Joel E. Denny + + Update copyright year. + * src/files.c: Here. + +2008-10-28 Di-an Jan (tiny change) + + Don't overwrite the input file. + * src/files.c (output_file_name_check): Fatal error if using input file + for output. + * tests/output.at: (AT_CHECK_CONFLICTING_OUTPUT): Add return status + argument. + (Conflicting output files): Add test. + +2008-10-28 Akim Demaille + + Space changes. + * data/lalr1.cc: Formatting changes. + +2008-10-28 Akim Demaille + + Don't define debugging functions when !YYDEBUG. + * data/lalr1.cc (debug_stream, set_debug_stream) + (debug_level_type, debug_level, set_debug_level): Don't + declare them when YYDEBUG is not defined. + The implementation are already YYDEBUG-aware. + +2008-10-28 Akim Demaille + + Prefer "continue" for empty loop bodies. + * etc/bench.pl.in: Use "continue" instead of {}. + +2008-10-28 Akim Demaille + + Space and comments changes. + * data/c++.m4, data/glr.c, data/lalr1.cc: Copyright year changes. + * data/c.m4, data/lalr1.cc: Space changes. + +2008-10-28 Akim Demaille + + Make gnulib a submodule. + * gnulib: New. + * .gitmodules (gnulib): New. + +2008-10-18 Joel E. Denny + + Fix yyerror_range for user-defined location type in C++. Reported by + Georg Sauthoff at + . + * data/lalr1.cc (parse): Change type of yyerror_range to location_type. + * THANKS (Georg Sauthoff): Add. + +2008-10-18 Joel E. Denny + + Update several administrative files mainly to facilitate releasing. + * HACKING (Administrivia): Make the git-merge-changelog notes more + helpful. + (Test suite): Don't say lalr1.cc is not exercised in the test suite. + (Release Procedure): Update for git and add numerous details that were + previously missing. + * Makefile.am (EXTRA_DIST): Remove Makefile.cfg and Makefile.maint. + * maint.mk (announcement): Don't list bison as a bootstrap tool so + that announcements don't claim we bootstrapped with whatever bison + happened to be in PATH. Add flex as a bootstrap tool. + * Makefile.maint: Remove, previously replaced by maint.mk. + * Makefile.cfg: Remove, and migrate settings to... + * cfg.mk: ... here for the sake of `make announcement'. + * bootstrap.conf (gnulib_modules): Add announce-gen. + * README: Say GNU Bison instead of just Bison. Suggested by Karl + Berry. + +2008-10-08 Di-an Jan (tiny change) + + Small but important bugfixes for the Java skeleton. + * data/lalr1.java (yyerror): Change Location to b4_location_type. + (yy_symbol_print): Call toString on yyvaluep. + +2008-08-29 Akim Demaille + + Clarify UPDATED use. + * doc/bison.texinfo: It refers to the last edition of this file, + not to the release date of Bison. + Reported by Joel E. Denny. + +2008-08-29 Akim Demaille + + * README: Update FAQ pointer. + Reported by Joel E. Denny. + +2008-08-27 Eric Blake + + Resync m4sugar from autoconf. + * data/m4sugar/m4sugar.m4 (m4_defn, m4_popdef, m4_undefine) + (m4_init): Adjust to latest m4.git changes. + (m4_mapall_sep, _m4_list_cmp, m4_version_compare): Reduce side + effects. + * data/m4sugar/foreach.m4 (_m4_shiftn): Fix off-by-one bug. + (_m4_list_cmp): Reduce side effects. + +2008-08-27 Akim Demaille + + Check yyerrok in calc.at. + * tests/calc.at (calc.y): Use yyerrok on "( error )". + (AT_CHECK_CALC): Add a check that ensures that yyerrok works as + expected. + +2008-08-27 Akim Demaille + + Support yyerrok in lalr1.cc. + YYBACKUP is still to import back into lalr1.cc. + * data/lalr1.cc (yyerrork, yyclearin, YYRECOVERING): Define. + +2008-08-26 Joel E. Denny + + For maintainer-check*, don't recompile for a $(VERSION) update. + * cfg.mk: New file. + (_is-dist-target): Override the one in GNUmakefile. + * Makefile.am (EXTRA_DIST): Add cfg.mk. + +2008-08-26 Joel E. Denny + + Update for recent change to gnulib. + * src/parse-gram.y: Don't include strverscmp.h. It comes from + string.h now. + +2008-08-15 Eric Blake + + Remaining m4sugar merge from autoconf. + * data/m4sugar/m4sugar.m4: Copy entire file from autoconf. + * data/m4sugar/foreach.m4: New file, copied from autoconf. + * data/Makefile.am (dist_m4sugar_DATA): Distribute it. + * src/output.c (output_skeleton): Tell m4 how to find it. + + Partial m4sugar merge from autoconf: m4_map. + * data/m4sugar/m4sugar.m4 (m4_fst): Delete. + (m4_map, m4_map_sep, _m4_map): Rewrite more efficiently. + (m4_apply, _m4_apply, m4_mapall, m4_mapall_sep): New macros. + * data/java.m4 (b4_token_enums): Use more efficient short-circuit + for empty list. + * data/c.m4 (b4_token_defines, b4_token_enums, b4_c_ansi_formals): + Likewise. + (b4_parse_param_for): Avoid m4_fst, now that autoconf no longer + declares it. + +2008-08-07 Joel E. Denny + + Keep .version and PACKAGE_VERSION in sync. + * Makefile.am ($(top_srcdir)/.version): Declare configure as a + dependency, and add comments justifying this in more detail. Discussed + starting at + . + +2008-08-06 Eric Blake + + Partial m4sugar merge from autoconf: m4_shiftn. + * data/m4sugar/m4sugar.m4 (m4_shiftn): Faster implementation. + (m4_shift2, m4_shift3): New macros. + (m4_case, m4_bmatch, m4_bpatsubsts, m4_join): Adjust clients. + * data/c.m4 (b4_c_function_def, b4_c_ansi_function_def) + (b4_c_ansi_function_decl, b4_c_function_call): Likewise. + * data/java.m4 (b4_remove_comma): Likewise. + + Partial m4sugar merge from autoconf: m4_wrap vs. m4 1.6. + * data/m4sugar/m4sugar.m4 (m4_unquote, m4_wrap_lifo): New macros. + (m4_wrap): Guarantee FIFO order, in spite of m4 1.6. + (m4_init): Consolidate wrapped text into single m4_wrap. + * data/bison.m4 (b4_check_user_names_wrap): Stick with LIFO order + in wrapped text. + +2008-08-05 Eric Blake + + Partial m4sugar merge from autoconf: builtins, version.m4. + * data/m4sugar/m4sugar.m4 (changeword): Nuke. + (m4_prepend): Remove, as it is unused and inherently quadratic, + whereas m4_append is linear in newer m4. + (m4_mkstemp): New builtin. + (m4_symbols): Make rename conditional. + (m4_version_prereq): Ensure fatal error if used in bison, which + intentionally lacks version.m4. + + Fix comments in m4sugar. + * data/m4sugar/m4sugar.m4: Comment changes, borrowed from autoconf. + +2008-08-02 Joel E. Denny + + Update for recent .gitignore fix in Gnulib. + * bootstrap: Back out 2008-07-18 hack now that gnulib-tool creates + anchored .gitignore entries. + +2008-08-02 Joel E. Denny + + Set gnu or gnits strictness. + * configure.ac (AM_INIT_AUTOMAKE): Set gnu strictness during + development and gnits strictness for releases. Based on Eric Blake's + suggestion at + . + +2008-07-31 Paolo Bonzini + + * NEWS: Clarify documentation of %language. + +2008-07-31 Paolo Bonzini + + Support usage of git-merge-changelog. + * .gitattributes: New. + * HACKING: Document usage of git-merge-changelog. + * bootstrap: Install git-merge-changelog entries in .git/config + if appropriate. + +2008-07-27 Joel E. Denny + + Remove remaining dependence on CVS Id keyword. + * ChangeLog: For the sake of people still using CVS, don't use dollars + when mentioning Id. + * data/xslt/bison.xsl: Remove Id from header comments, where it was + unusual anyway. + * data/xslt/xml2dot.xsl: Likewise. + * data/xslt/xml2text.xsl: Likewise. + * data/xslt/xml2xhtml.xsl: Likewise. + * doc/Doxyfile.in (PROJECT_NUMBER): Don't use ID. + * doc/Makefile.am (neutralize): Remove, no longer needed. + (.x.1): Don't use neutralize. + (edit): Don't substitute for ID. + (Doxyfile): Don't define Id, and thus don't depend on ChangeLog. + +2008-07-27 Joel E. Denny + + Fix dependence on computed configure variables. + * doc/Makefile.am (common_dep): Depend on $(top_srcdir)/configure not + $(top_srcdir)/configure.ac so that changes to computed variables, such + as PACKAGE_VERSION, are seen. + * tests/Makefile.am ($(srcdir)/package.m4): Likewise. + +2008-07-20 Joel E. Denny + + Update copyright dates for recent changes. + * Makefile.am: Here. + * src/Makefile.am: Here. + * src/reduce.c: Here. + * tests/reduce.at: Here. + +2008-07-18 Joel E. Denny + + Use git-version-gen for version names between releases. + * .cvsignore (.tarball-version, GNUmakefile, *~): Add. + * .gitignore (/.tarball-version, /GNUmakefile, /*~): Add. + * .prev-version: New. + * .version.in: Remove. + * ChangeLog: Remove the Id previously used for capturing the CVS + revision. + * GNUmakefile: Remove, now copied from Gnulib. + * Makefile.am: Add code suggested by comments in + build-aux/git-version-gen. + (EXTRA_DIST): Remove GNUmakefile, handled by Gnulib. Add maint.mk, + .prev-version, and .version. + * NEWS (2.3b+): Rename to... + (?.?): ... this because we're dropping the "+" version naming scheme, + but, in general, we still can't be sure of our next release name. + * bootstrap: Add a quick hack to remove from .gitignore the + GNUmakefile entry that gnulib adds. We already have a /GNUmakefile + entry. This should really be fixed in gnulib instead. + * bootstrap.conf (gnulib_modules): Add gnumakefile. + * configure.ac (AC_INIT): Set version name by invoking + build-aux/git-version-gen. + (AC_CONFIG_FILES): Remove .version, now generated by + build-aux/git-version-gen. + * maint.mk: New, copied from coreutils. + * doc/.cvsignore (bison.1): Add. + * doc/.gitignore (/bison.1): Add. + * doc/bison.1: Remove, generated. + * src/.cvsignore (revision.c): Remove. + * src/.gitignore (/revision.c): Remove. + * src/Makefile.am (bison_SOURCES): Remove revision.c and revision.h. + (BUILT_SOURCES): Remove revision.c. + (revision.c): Remove. + * src/getargs.c (version): Don't print revision after the VERSION. + * src/revision.h: Remove. + +2008-07-16 Joel E. Denny + + Fix untranslatable composition of sentences. Reported by Goran + Uddeborg at + . + * THANKS (Goran Uddeborg): Add. + * src/reduce.c (reduce_print): Report the number of nonterminals and + rules useless in the grammar in separate sentences. + * tests/reduce.at (Useless Rules): Update output. + (Reduced Automaton): Likewise. + (Underivable Rules): Likewise. + (Empty Language): Likewise. + +2008-07-15 Joel E. Denny + + Fix some .gitignore and .cvsignore problems. + * bootstrap (insert_sorted_if_absent): Replace all uses with... + (insert_vc_ignore): ... this new function, which prepends `/' to all + .gitignore entries before passing them to insert_sorted_if_absent. + * bootstrap.conf (vc_ignore): Set to '.cvsignore .gitignore' so that + .cvsignore files are maintained even though Bison developers run + bootstrap while using Git. + * .cvsignore (*.patch *.log log patches applied): Remove, apparently + unneeded by Bison. + (gnulib): Add. + * .gitignore (/*.patch *.log log patches applied): Remove, broken and + unneeded. Reported by Eric Blake. + * lib/.gitignore (/*~): Add. + * po/.cvsignore, runtime-po/.cvsignore: Sync with .gitignore. + * examples/calc++/.gitignore (/calc++.exe): Add. Reported by Eric + Blake. + * src/.gitignore (/bison.exe): Add. Reported by Eric Blake. + +2008-07-15 Joel E. Denny + + Improve forward-compatibility with GNU M4. Reported by Eric Blake at + . + * bootstrap.conf (gnulib_modules): Add unsetenv. + * lib/.gitignore, lib/.cvsignore (/unsetenv.c): Add. + * m4/.gitignore, m4/.cvsignore (/environ.m4): Add. + (/setenv.m4): Add. + * src/output.c (output_skeleton): For the m4 invocation, pass -dV as + the first argument because it may become position-dependent, and unset + POSIXLY_CORRECT so Bison's skeletons have access to GNU M4 extensions. + Add comments explaining these issues in more detail. + +2008-07-14 Joel E. Denny + + Add .gitignore everywhere based on .cvsignore. + * .gitignore: New. + * build-aux/.gitignore: New. + * data/.gitignore: New. + * doc/.gitignore: New. + * etc/.gitignore: New. + * examples/.gitignore: New. + * examples/calc++/.gitignore: New. + * lib/.gitignore: New. + * m4/.gitignore: New. + * po/.gitignore: New. + * runtime-po/.gitignore: New. + * src/.gitignore: New. + * tests/.gitignore: New. + +2008-05-27 Joel E. Denny + + * NEWS (2.3b+): New section, empty for now. + * configure.ac (AC_INIT): 2.3b -> 2.3b+. + +2008-05-27 Joel E. Denny + + * NEWS (2.3b): Update release date since there has been a delay in + getting the announcements and tarballs out. + +2008-05-23 Joel E. Denny + + * NEWS: Version 2.3b. + * configure.ac (AC_INIT): Likewise. + (PACKAGE_COPYRIGHT_YEAR): Update to 2008. + +2008-05-23 Joel E. Denny + + * HACKING: Don't say don't mention HACKING in the ChangeLog. We've + been doing it for years. + (Test suite): Mention maintainer-push-check and maintainer-xml-check. + (Release Procedure): Add FIXME about make alpha being unmaintained. + +2008-05-13 Joel E. Denny + + * data/yacc.c: Reformat m4 a little for readability. + * src/lalr.c (build_relations): Correct comment. + +2008-05-12 Juan Manuel Guerrero + + DJGPP specific issue. + * djgpp/config.sed: Fixes required to run configure scripts generated + by autoconf 2.62. + +2008-05-07 Joel E. Denny + + * HACKING (Release Procedure): translation@iro.umontreal.ca is now + coordinator@translationproject.org. + +2008-05-06 Joel E. Denny + + * THANKS: Add Eric Blake. + +2008-04-23 Eric Blake + + Revert prior patch, by working around autoconf regression. + * tests/output.at (m4_expand): Add workaround for autoconf 2.62. + ("Output file name: ("): Uncomment test. + ("Output file name: )"): Likewise. + Based on an idea from Noah Misch. + +2008-04-21 Joel E. Denny + + Work-around an Autoconf 2.62 AT_SETUP bug that was not present in + 2.61. Reported by Juan Manuel Guerrero at + . + * tests/output.at ("Output file name: ("): Comment out test case for + now. + ("Output file name: )"): Likewise. + +2008-04-21 Joel E. Denny + + * GNUmakefile: Update git-version-gen invocation so make dist + succeeds. + +2008-04-21 Joel E. Denny + + Update to the current gnulib CVS repository, and fix trigraph handling + in Bison. + * bootstrap: Update gnulib CVS repository URL. + (symlink_to_dir): Encapsulate the code that guarantees the destination + directory exists into... + (check_dst_dir): ... this new function, and... + (cp_mark_as_generated): ... reuse it here so that bootstrap doesn't + fail when copying files into lib/uniwidth/. + * src/output.c (prepare_symbols): When writing yytname muscles, where + symbol names will be encoded in C-string literals, tell quotearg to + escape trigraphs. This used to be the default in gnulib. + * tests/regression.at (Token definitions): Because of the change in + gnulib's quotearg behavior, string_as_id in parse-gram.y no longer + escapes trigraphs in symbol names. Thus, yytname no longer has + trigraphs unnecessarily doubly escaped. Update test case output. + Extend test case to be sure Bison's own error messages will no longer + have trigraphs in symbol names unnecessarily escaped once. + +2008-04-20 Joel E. Denny + + Fix make dist infinite loop reported by Juan Manuel Guerrero at + . + * .cvsignore: Add .version. + * .version.in: New. + * bootstrap.conf (gnulib_modules): Add git-version-gen. + * configure.ac (AC_CONFIG_FILES): Add .version. + * build-aux/.cvsignore: Add git-version-gen. + +2008-03-08 Joel E. Denny + + * NEWS (2.3a+): Mention that -g now takes an argument. + * doc/bison.texinfo (Bison Options): Reword -W entry a little for + consistency. Update the -g and -x entries now that they take + arguments. Use brackets to indicate optional arguments. + * src/getargs.c (usage): Explain the relationship between arguments of + long and short options more completely. Document --defines and -d + separately since the former takes an argument but, for POSIX Yacc, the + latter does not. + (short_options): Let -W take an optional argument like --warnings. + (getargs): Sort cases. + +2008-02-28 Akim Demaille + + * doc/bison.texinfo: Fix a few typos. + +2008-02-28 Akim Demaille + + * doc/bison.texinfo (Bison Options): Document -W. + Based on Joel E. Denny's NEWS entry, and Automake's documentation. + +2008-02-28 Akim Demaille + + * src/getargs.c (short_options): Split and sort for readability. + -g and -x take optional arguments, just like their long options. + * build-aux/cross-options.pl: Use /x to make the regexp easier to + understand. + Fix the handling of $opt which resulted in all the argument to be + considered as optional. + +2008-02-22 Joel E. Denny + + * NEWS (2.3a+): Don't say %language is experimental. Mention Java and + say its interface is experimental. + * doc/bison.texinfo (Decl Summary): In the %language entry, mention + Java. + (Bison Options): In the -L and --language entry, mention Java. + (Java Bison Interface): Say the interface is experimental. + * src/getargs.c (usage): Mention -L and --language. + + * NEWS (2.3a+): Say the push parsing interface is experimental. + * doc/bison.texinfo (Push Decl): Likewise. + (Decl Summary): Likewise in the "%define api.push_pull" entry. + (Push Parser Function): Likewise. + (Pull Parser Function): Likewise. + (Parser Create Function): Likewise. + (Parser Delete Function): Likewise. + (Table of Symbols): Likewise in the yypstate_delete, yypstate_new, + yypull_parse, and yypush_parse entries. + + * NEWS (2.3a+): Mention XML support, and say the schema is + experimental. + * doc/bison.texinfo (Bison Options): Mention -x and --xml. + * src/getargs.c (usage): Say the XML schema is experimental. + + * NEWS (2.3a+): Say option instead of flag. + +2008-02-21 Wojciech Polak + + * data/xslt/xml2xhtml.xsl (xsl:template match="/"): Change footer + text. + +2008-02-20 Joel E. Denny + + Fix impure push parser compile error reported by Bob Rossi at + . + * data/yacc.c: Clean up whitespace in the output a little. + (yypstate_allocated): Define for impure push parsers regardless of + whether the pull interface is also requested. + * tests/push.at (Push Parsing: Multiple impure instances): Extend to + check impure push parsers without the pull interface. + + * data/yacc.c (yypstate_new): Don't try to invoke yyerror since + yyerror takes arguments specified by %parse-param while yypstate_new + does not. + * doc/bison.texinfo (Parser Create Function): Document that + yypstate_new returns 0 for multiple impure parser instances. + * tests/push.at (Push Parsing: Multiple impure instances): Update + expected stderr output. + +2008-02-19 Joel E. Denny + + * runtime-po/POTFILES.in (push.c): Remove. + +2008-02-17 Joel E. Denny + + * data/Makefile.am (dist_pkgdata_DATA): Remove push.c. + * data/push.c: Rename to... + * data/yacc.c: ... this, overwriting it. + * etc/bench.pl.in (bench_grammar): `%pure-parser'-> `%define api.pure'. + `%push-pull-parser' -> `%define api.push_pull "both"'. + Remove old yacc.c tests, and update push.c tests to yacc.c. + +2008-02-17 Joel E. Denny + + * data/bison.m4 (b4_percent_code_get): Output %code block comments like + `"%code top" blocks' instead of `%code "top" blocks'. + * data/push.c: Import yacc.c changes from 2008-01-09 and 2007-08-03. + Clean up whitespace in the output a little. + +2008-02-16 Joel E. Denny + + Fix documentation problems reported by Tim Josling at + . + * NEWS (2.3a+): Mention removal of --no-parser, -n, and %no-parser. + * doc/bison.texinfo (Token Decl): Token numbers are *nonnegative* + integers. Explain the effect of literal string aliases on error + messages. Copy token 0 documentation from the C++ skeleton + documentation. + +2008-02-16 Joel E. Denny + + Accept a token number in a %left, %right, or %nonassoc for POSIX + conformance. Reported by Tim Josling at + . + * NEWS (2.3a+): Mention. + * doc/bison.texinfo (Precedence Decl): Describe how literal strings + and code numbers are treated by precedence declarations. + * src/parse-gram.y (precedence_declaration): Use symbols.prec instead + of symbols.1. + (symbols.prec): New, just like symbols.1 but uses symbol.prec instead + of symbol. + (symbol.prec): New, just like symbol but allows INT. + * src/symtab.c (symbol_user_token_number_set): Remove an aver that no + longer holds. + * tests/regression.at (Token number in precedence declaration): New + test case. + +2008-02-06 Juan Manuel Guerrero + + DJGPP specific issues. + * djgpp/config.bat: Add filenames that are not 8.3 clean and that must + be changed. Copyright timestamp adjusted. + * djgpp/config.sed: Add filenames that are not 8.3 clean and that must + be changed. Copyright timestamp adjusted. + * djgpp/config.site: Copyright timestamp adjusted. + * djgpp/config_h.sed: Copyright timestamp adjusted. + * djgpp/djunpack.bat: Copyright timestamp adjusted. + * djgpp/fnchnage.lst: Add filenames that are not 8.3 clean to the + filename translation list. + * djgpp/subpipe.c (init_subpipe): Check the environment variables + TMPDIR, TMP and TEMP, in that order, to determinate where the temp + files shall be created. Before trying to use the temp dir where the + environment variable points to check that the dir really exists. If + not default to the cwd as temp dir. Copyright timestamp adjusted. + * djgpp/subpipe.h: Copyright timestamp adjusted. + * djgpp/testsuite.sed: Copyright timestamp adjusted. + +2008-01-30 Paul Eggert + + * doc/bison.texinfo: Update Back-Cover text to reflect new GNU wording. + +2008-01-09 Paul Eggert + + * data/yacc.c (yyparse): Correct the comment when locations aren't used. + Problem reported by Claudio Saavedra in + . + +2008-01-05 Wojciech Polak + + * data/xslt/xml2xhtml.xsl (xsl:template match="/"): Precede an XHTML + document's title with the input grammar file name. + +2007-12-22 Joel E. Denny + + Automate regression testing of the XML/XSLT implementation. Discussed + starting at + . + * configure.ac (XSLTPROC): New substitution. + * Makefile.am (maintainer-xml-check): New phony target invoking... + * tests/Makefile.am (maintainer-xml-check): ... this new phony target + invoking make maintainer-check with BISON_TEST_XML=1. + * tests/atlocal.in (XSLTPROC): New. + * tests/local.at (AT_BISON_CHECK): New macro to (1) instruct Valgrind + not to report reachable memory when Bison is expected to have a + non-zero exit status and (2) to compare XML/XSLT output with --graph + and --report=all output for every working grammar when + BISON_TEST_XML=1. + (AT_BISON_CHECK_NO_XML): Likewise, but skip XML checks. + (AT_BISON_CHECK_XML): New. + (AT_QUELL_VALGRIND): New. + * tests/testsuite.at (ORIGINAL_AT_CHECK): Remove this and... + (AT_CHECK): ... don't redefine this since this was the old way to + quell Valgrind. + * tests/actions.at: Rewrite all AT_CHECK invocations for bison as + AT_BISON_CHECK invocations. + * tests/c++.at: Likewise. + * tests/calc.at: Likewise. + * tests/conflicts.at: Likewise. + * tests/cxx-type.at: Likewise. + * tests/existing.at: Likewise. + * tests/glr-regression.at: Likewise. + * tests/headers.at: Likewise. + * tests/input.at: Likewise. + * tests/java.at: Likewise. + * tests/output.at: Likewise. + * tests/push.at: Likewise. + * tests/reduce.at: Likewise. + * tests/regression.at: Likewise. + * tests/sets.at: Likewise. + * tests/skeletons.at: Likewise. + * tests/synclines.at: Likewise. + * tests/torture.at: Likewise. + (Big triangle): Use AT_BISON_CHECK_NO_XML instead since this grammar + tends to hang xsltproc. + (Big horizontal): Likewise. + +2007-12-08 Joel E. Denny + + In XML output, remove redundant class attribute on symbol element. + * data/xslt/bison.xsl (xsl:key name="bison:symbolByName"): New. + * data/xslt/xml2xhtml.xsl (xsl:template match="symbol"): Use it to + look up a symbol to determine whether it's a nonterminal or terminal. + * src/gram.c (rule_rhs_print_xml): Remove class attribute. + * src/state.c (state_rule_lookahead_tokens_print_xml): Likewise. + + Add prec/assoc information to XML output. + * src/gram.c (grammar_rules_print_xml): For each rule that has a + %prec, add a percent_prec attribute. + * src/print-xml.c (print_grammar): For each terminal that has a + precedence or associativity, add a prec or assoc attribute. + (xml_indent): New. + (xml_puts): Use xml_indent. + (xml_printf): Use xml_indent. + * src/print-xml.h (xml_indent): Prototype. + + * tests/existing.at (GNU pic Grammar): Fix a rule miscopied from + . + +2007-12-08 Joel E. Denny + + * data/xslt/bison.xsl (bison:ruleNumber): Rename to... + (bison:ruleByNumber): ... this for clarity. + * data/xslt/xml2dot.xsl (xsl:template match="item"): Update. + * data/xslt/xml2text.xsl (xsl:template match="item"): Update. + (xsl:template match="reduction"): Update. + (xsl:template match="item"): Update. + (xsl:template match="reduction"): Update. + + In the XML output, don't print the list of rules where symbols appear. + Compute it in XSLT instead. Discussed at + . + * data/xslt/bison.xsl (bison:ruleByLhs): New. + (bison:ruleByRhs): New. + * data/xslt/xml2text.xsl (xsl:template match="terminal"): Use + bison:ruleByRhs. + (xsl:template match="terminal/rule"): Remove. + (xsl:template match="nonterminal"): Use bison:ruleByLhs and + bison:ruleByRhs. + (xsl:template match="nonterminal/left/rule|nonterminal/right/rule"): + Remove. + * data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Use + bison:ruleByRhs and mode="number-link" for rule template. + (xsl:template match="terminal/rule"): Remove. + (xsl:template match="nonterminal"): Use bison:ruleByLhs and + bison:ruleByRhs and mode="number-link" for rule template. + (xsl:template match="nonterminal/left/rule|nonterminal/right/rule"): + Rewrite as... + (xsl:template match="rule" mode="number-link"): ... this. + * src/print-xml.c (print_grammar): Don't print the list of rules. + +2007-12-01 Joel E. Denny + + Don't let --report affect XML output; always print all information. + Discussed at + . + * src/conflicts.c (log_resolution): Implement. + * src/print-xml.c (print_core): Implement. + (print_state): Implement. + (print_xml): Implement. + + * NEWS (2.3a+): Fix quotes. + * src/parse-gram.y (prologue_declaration): For consistency with -v, + don't let %verbose clear the list specified by --report. + +2007-11-26 Akim Demaille + + * data/Makefile.am (dist_pkgdata_DATA): Ship and install bison.xsl. + +2007-11-24 Joel E. Denny + + In the XML output, list useless and unused symbols and rules with the + useful ones and add a "usefulness" attribute. Discussed starting at + . + * src/gram.c (grammar_rules_partial_print_xml): Remove. + (grammar_rules_print_xml): Print all rules instead of just those + useful in the grammar, and add a "usefulness" attribute. + * src/gram.h (grammar_rules_partial_print_xml): Remove prototype. + * src/print-xml.c (print_rules_useless_in_parser): Remove. + (print_grammar): Print all nonterminals instead of just useful ones, + and add a "usefulness" attribute to nonterminals and terminals. + (print_xml): Don't print a separate "reductions" or + "rules-useless-in-parser" element. + * src/reduce.c (reduce_output): Use reduce_token_unused_in_grammar. + (reduce_xml): Remove. + (reduce_token_unused_in_grammar): New. + (reduce_nonterminal_useless_in_grammar): New. + * src/reduce.h (reduce_xml): Remove prototype. + (reduce_token_unused_in_grammar): Add prototype. + (reduce_nonterminal_useless_in_grammar): Add prototype. + * data/xslt/xml2text.xsl: Update for XML changes. + * data/xslt/xml2xhtml.xsl: Update for XML changes. + * tests/reduce.at (Useless Terminals): Update output. + (Useless Rules): Update output. + (Reduced Automaton): Update output. + + Say "Terminals unused in grammar" instead of "Unused terminals". + * NEWS (2.3a+): Update. + * doc/bison.texinfo (Understanding): Update example output. + * src/reduce.c (reduce_output): Implement. + * data/xslt/xml2text.xsl: Implement. + * data/xslt/xml2xhtml.xsl: Implement. + +2007-11-18 Joel E. Denny + + Accept --report-file=FILE to override the default `.output' filename. + * NEWS (2.3a+): Mention. + * doc/bison.texinfo (Bison Options): Add an entry. + * src/files.c (compute_output_file_names): Don't override + spec_verbose_file if already set. + * src/getargs.c (usage): Document --report-file. + (REPORT_FILE_OPTION): New anonymous enum member. + (long_options): Add entry for it. + (getargs): Add case for it setting spec_verbose_file. + + * build-aux/cross-options.pl: Don't record a short option just because + there's an arg. + * doc/.cvsignore: Add yacc.1. + +2007-11-14 Akim Demaille + + * doc/yacc.1.in: New. + * configure.ac, doc/Makefile.am: Adjust. + * configure.ac (PACKAGE_COPYRIGHT_YEAR): New substitution, and new + config.h symbol. + Use AC_SUBST for assignments too. + * src/getargs.c (version): Use PACKAGE_COPYRIGHT_YEAR. + +2007-11-10 Joel E. Denny + + * src/gram.c: Remove comments that duplicate comments in gram.h. + + When reporting useless rules and nonterminals, say "useless in grammar" + instead of "useless", and say "useless in parser" instead of "never + reduced". Discussed starting at + . + * NEWS (2.3a+): Mention this change. + * data/xslt/xml2text.xsl: Update output text and expected input XML + element names to match changes below. + * data/xslt/xml2xhtml.xsl: Likewise. + (xsl:template match="bison-xml-report"): Add missing entry in Table of + Contents: "Rules useless in parser due to conflicts". + * doc/bison.texinfo (Decl Summary): Reword a little. + (Understanding): Update example output for changes below. + * src/gram.c: (rule_useful_p): Rename to... + (rule_useful_in_grammar_p): ... this. + (rule_useless_p): Rename to... + (rule_useless_in_grammar_p): ... this. + (rule_never_reduced_p): Rename to... + (rule_useless_in_parser_p): ... this. + (grammar_rules_print): Update for renames. + (grammar_rules_print_xml): Update for renames. + (grammar_rules_never_reduced_report): Rename to... + (grammar_rules_useless_report): ... this since it is used for either + kind of useless rule. + * src/gram.h: Reword comments and update function names in prototypes. + * src/main.c (main): Say "rule useless in parser due to conflicts". + * src/print-xml.c (print_rules_never_reduced): Rename to... + (print_rules_useless_in_parser): ... this, and rename output XML + element "rules-never-reduced" to "rules-useless-in-parser". + (print_xml): Update for rename. + * src/print.c (print_results): Say "Rules useless in parser due to + conflicts". + * src/reduce.c (reduce_grammar_tables): Say "rule useless in grammar". + (nonterminals_reduce): Say "nonterminal useless in grammar". + (reduce_output): Say "Nonterminals useless in grammar". + Say "Rules useless in grammar". + (reduce_xml): Rename output XML element "useless" to + "useless-in-grammar". + (reduce_print): Don't report the count of grammatically useless rules + as "rules never reduced" just because %yacc is specified. + In the correct report of this count, say nonterminal(s) and rule(s) + "useless in grammar". + * tests/conflicts.at (S/R in initial): Update expected output. + (Defaulted Conflicted Reduction): Likewise. + (Unreachable States After Conflict Resolution): Likewise. + * tests/existing.at (GNU pic Grammar): Likewise. + * tests/reduce.at (Useless Nonterminals): Likewise. + (Useless Rules): Likewise. + (Reduced Automaton): Likewise. + (Underivable Rules): Likewise. + (Empty Language): Likewise. + +2007-11-09 Joel E. Denny + + * data/bison.m4 (b4_cat): Put a newline after the end delimiter of the + here document and before the EOF so that BSD's implementation of Bourne + shell doesn't parse the delimiter as part of the here document. + * doc/.cvsignore: Add cross-options.texi. + * src/getargs.c (usage): Add a blank line after the warning categories. + +2007-11-08 Paolo Bonzini + + * data/lalr1.java (Lexer): Remove usage of b4_pure_if. + +2007-11-05 Akim Demaille + + Remove Id: from bison.1. + * doc/Makefile.am (remove_time_stamp): Include the sed invocation. + (perl -0777 -pi -e 's/\.PP\nId): New. + (.x.1): Use it to ignore the version control revision. + +2007-11-05 Akim Demaille + + * build-aux/Makefile.am: Ship cross-options.pl. + * doc/Makefile.am: Always refer to cross-options.texi with + $(srcdir). + (MAINTAINERCLEANFILES): Add it. + +2007-11-04 Akim Demaille + + Generate the long/short option cross-table. + * build-aux/cross-options.pl: New. + * doc/Makefile.am (cross-options.texi): New. + * doc/bison.texinfo: Use it. + +2007-11-04 Akim Demaille + + Generate bison.1 using help2man. + * doc/common.x, doc/bison.x: New. + * doc/Makefile.am (bison.1, .x.1): New. + The code is taken from autoconf-2.61/man/Makefile.am. + * configure.ac: Look for help2man. + +2007-11-04 Akim Demaille + + Complete --help. + * src/getargs.c (usage): Document -W, make it clear that -d, + -g and -x have optional arguments. + +2007-11-04 Akim Demaille + + Find sha1sum when named gsha1sum. + * bootstrap (find_tool): New. + ($SHA1SUM): New. + +2007-10-28 Joel E. Denny + + Deprecate %pure-parser and add `%define api.pure'. Discussed starting + at + . + * NEWS (2.3a+): Mention. + * data/bison.m4 (b4_pure_if): Don't define it here. + * data/c.m4 (b4_identification): Depend on individual skeletons to + define b4_pure_flag, b4_push_flag, or b4_pull_flag if they use the + values of the %define variables api.pure or api.push_pull. Define + YYPURE, YYPUSH, and YYPULL accordingly. + * data/glr.c: Define b4_pure_if based on `%define api.pure' unless + glr.cc has already defined b4_pure_flag. + * data/push.c: Define b4_pure_if based on `%define api.pure'. + Remove YYPUSH and YYPULL since they're back in b4_identification again. + * data/yacc.c: Define b4_pure_if based on `%define api.pure'. + * doc/bison.texinfo (Pure Decl): Update. + (Push Decl): Update. + (Decl Summary): Add api.pure to %define entry. + In %pure-parser entry, say it's deprecated and reference %define. + (Pure Calling): Update. + (Error Reporting): Update. + (C++ Scanner Interface): Update. + (How Can I Reset the Parser): Update. + (Table of Symbols): In %pure-parser entry, say it's deprecated and + reference %define. + * src/getargs.c (pure_parser): Remove global variable. + * src/getargs.h (pure_parser): Remove extern. + * src/output.c (prepare): Don't define pure_flag muscle. + * src/parse-gram.y (prologue_declaration): Implement %pure-parser as a + wrapper around `%define api.pure'. + * tests/calc.at (Simple LALR Calculator): Update. + (Simple GLR Calculator): Update. + * tests/cxx-type.at (GLR: Resolve ambiguity, pure, no locations): + Update. + (GLR: Resolve ambiguity, pure, locations): Update. + (GLR: Merge conflicting parses, pure, no locations): Update. + (GLR: Merge conflicting parses, pure, locations): Update. + * tests/glr-regression.at (Uninitialized location when reporting + ambiguity): Update + * tests/input.at (Unused %define api.pure): New test case. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Update definition for + AT_PURE_IF and AT_PURE_AND_LOC_IF. + * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update. + +2007-10-28 Joel E. Denny + + %define push_pull -> %define api.push_pull. Discussed starting at + . + * data/push.c: Expect the new name. + * data/yacc.c: Likewise. + * doc/bison.texinfo (Push Decl): Update. + (Decl Summary): Update %define entry. + (Push Parser Function): Update. + (Pull Parser Function): Update. + (Parser Create Function): Update. + (Parser Delete Function): Update. + * tests/calc.at (Simple LALR Calculator): Update. + * tests/input.at (%define enum variables): Update. + * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update. + (Push Parsing: Multiple impure instances): Update. + (Push Parsing: Unsupported Skeletons): Update. + * tests/torture.at (Exploding the Stack Size with Alloca): Update. + (Exploding the Stack Size with Malloc): Update. + + * NEWS (2.3a+): Add an entry for the push parser, and clean up the + other entries some. + +2007-10-27 Joel E. Denny + + For the XML output's terminal element, rename @number to @token-number, + and add @symbol-number. In the nonterminal element, rename @number to + @symbol-number. Discussed starting at + . + * data/xslt/xml2text.xsl (xsl:template match="terminal"): Update for + renames. + (xsl:template match="nonterminal"): Likewise. + * data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Likewise. + (xsl:template match="nonterminal"): Likewise. + * src/print-xml.c (print_grammar): Implement. + +2007-10-21 Joel E. Denny + + * data/xslt/xml2dot.xsl (xsl:template match="automaton/state"): After + 2007-10-11 change, the child elements here are items not rules. + (xsl:template match="item"): New. + (xsl:template match="rule"): Update for new reduced itemset. + (xsl:template match="point"): Remove. + (xsl:template match="empty"): For consistency with --graph, don't + output "/* empty */". + * data/xslt/xml2text.xsl (xsl:template match="terminal"): When invoking + line-wrap, don't pass a negative value as first-line-length since this + won't work with the following changes. + (xsl:template name="line-wrap"): Simplify slightly. + (xsl:template name="ws-search"): Eliminate recursion. + * src/print_graph.c (print_core): Don't print a reduction's lookahead + set next to an item whose dot is not at the end of the RHS even if it + happens to be associated with the same rule. + +2007-10-19 Joel E. Denny + + Add %define lr.keep_unreachable_states. + * NEWS (2.3a+): Mention it in the entry for unreachable state removal. + * doc/bison.texinfo (Decl Summary): Mention it in the %define entry. + * src/main.c (main): Implement it. + * tests/conflicts.at (Unreachable States After Conflict Resolution): + Extend to test it, and fix a typo. + +2007-10-19 Joel E. Denny + + * NEWS (2.3a+): Add entry for recent .output file lookahead set fix. + * doc/bison.texinfo (Understanding): Remove a bogus lookahead set in + the example .output text. + * tests/regression.at (Extra lookahead sets in report): Improve wording + of comments. + +2007-10-17 Wojciech Polak + + * src/print-xml.c (print_grammar): Renamed + and attributes: + "type" to "number" and "symbol" to "name". + * data/xslt/xml2text.xsl (xsl:template match="terminal"): + Use new attribute names. + (xsl:template match="nonterminal"): Likewise. + * data/xslt/xml2xhtml.xsl: Likewise. + +2007-10-17 Joel E. Denny + + * doc/bison.texinfo (Bison Options): Add entry for --print-datadir. + (Option Cross Key): Likewise. + + * src/print-xml.c (print_core): Don't print a reduction's lookahead set + next to an item whose dot is not at the end of the RHS even if it + happens to be associated with the same rule. + * src/print.c (print_core): Likewise. + * tests/conflicts.at (Unresolved SR Conflicts): Update output. + (Resolved SR Conflicts): Update output. + * tests/regression.at (Extra lookahead sets in report): New test case. + +2007-10-11 Wojciech Polak + + * src/print-xml.c (print_core): Remove item set + redundancy. + * data/xslt/bison.xsl (bison:ruleNumber): New key. + Improve processing time. Suggested by Joel E. Denny. + * data/xslt/xml2dot.xsl (xsl:template name="escape"): + Write xsl:param "required" attribute as comment. + * data/xslt/xml2text.xsl (xsl:template match="item"): New. + (xsl:template match="rule"): Support new reduced itemset. + (xsl:template match="point"): Remove. + * data/xslt/xml2xhtml.xsl: Likewise. + +2007-10-09 Joel E. Denny + + * src/getargs.c (version): Update copyright year. + +2007-10-09 Joel E. Denny + + Make xml2dot.xsl and --graph produce the same output. + * data/xslt/xml2dot.xsl (xsl:template match="rule"): Use a ` ' + instead of a `\n'. That is, don't add escapes yet or they'll be doubly + escaped later. + (xsl:template name="output-node"): Use the new escape template instead + of the string-replace template directly. + (xsl:template name="output-edge"): Likewise. + (xsl:template name="escape"): New, escapes backslashes and newlines in + addition to quotation marks. + * src/graphviz.c (start_graph, output_node, output_edge): Add + whitespace to output for legibility. + + Make xml2text.xsl and --report produce the same output, and remove the + XML "conflicts" element since a conflict summary is easily extracted + from the automaton. + * data/xslt/bison.xsl: New. + (xsl:template match="state" mode="bison:count-conflicts): New. + * data/xslt/xml2text.xsl: Import bison.xsl. + (xsl:template match="bison-xml-report"): Instead of styling the + "conflicts" element, style the "automaton" element with mode + "conflicts". Unlike the former, the latter lists S/R and R/R + conflicts for a state on the same line. + (xsl:template match="conflicts"): Remove. + (xsl:template match="conflict"): Remove. + (xsl:template match="terminal"): Line-wrap the list of rules in which + the terminal is used. + (xsl:template match="nonterminal"): Likewise for nonterminals. + (xsl:template match="automaton" mode="conflicts"): New. + (xsl:template match="state" mode="conflicts"): New. + (xsl:template name="line-wrap"): New. + (xsl:template name="ws-search"): New. + * data/xslt/xml2xhtml.xsl: Import bison.xsl. + (xsl:template match="bison-xml-report"): Instead of styling the + "conflicts" element, style the "automaton" element with mode + "conflicts." + (xsl:template match="conflicts"): Remove. + (xsl:template match="conflict"): Remove. + (xsl:template match="automaton" mode="conflicts"): New. + (xsl:template match="state" mode="conflicts): New. + * src/conflicts.c (conflicts_output_xml): Remove. + * src/conflicts.h (conflicts_output_xml): Remove prototype. + * src/print-xml.c (print_xml): Don't invoke conflicts_output_xml. + * src/print.c (print_grammar): Consistently wrap at the 66th column so + the corresponding XSLT is easier. Also, never wrap between a word and + the comma that follows it. + +2007-10-08 Joel E. Denny + + Improve C++ namespace support. Discussed starting at + . + * data/c++.m4: (b4_namespace_ref, b4_namespace_open, + b4_namespace_close): New macros that interpret the %define variable + "namespace" so its value can contain "::" to indicate nested + namespaces. + * data/glr.cc (b4_namespace): Don't define, and replace all uses with + the above macros. + * data/lalr1.cc (b4_namespace): Likewise. + * data/location.cc (b4_namespace): Likewise. + * doc/bison.texinfo (Decl Summary): Move `%define push_pull' entry + inside a new table in the general %define entry. Document `%define + namespace' there as well. Point the %name-prefix entry to it since it + explains it more completely in the case of C++. + (C++ Bison Interface): Mention `%define namespace' instead of + %name-prefix. + (Table of Symbols): Remove the `%define push_pull' entry. The %define + entry suffices. + * tests/c++.at (Relative namespace references): New test case. + (Absolute namespace references): New test case. + (Syntactically invalid namespace references): New test case. + * tests/input.at (C++ namespace reference errors): New test case. + +2007-10-08 Joel E. Denny + + Add syncline support and location accessor to internal %define + interfaces. + * data/bison.m4 (b4_percent_define_get_loc): New. + (b4_percent_define_get_syncline): New. + (b4_percent_define_flag_if): Use b4_percent_define_get_loc. + (b4_percent_define_default): Record defining location as line 1 rather + than 0 for the sake of synchronizing #line's, and define + b4_percent_define_syncline(VARIABLE). + (b4_percent_define_check_values): Use b4_percent_define_get_loc. + * src/muscle_tab.c (muscle_syncline_grow): New. + (muscle_code_grow): Use muscle_syncline_grow. + (muscle_percent_define_insert): Use muscle_percent_define_get_loc, and + define b4_percent_define_syncline(VARIABLE). + (muscle_percent_define_get_loc): New. + (muscle_percent_define_get_syncline): New. + (muscle_percent_define_flag_if): Use muscle_percent_define_get_loc, and + remove some unused variables. + (muscle_percent_define_default): Record defining location as line 1 + rather than 0 for the sake of synchronizing #line's, and define + b4_percent_define_syncline(VARIABLE). + (muscle_percent_define_check_values): Use + muscle_percent_define_get_loc. + * src/muscle_tab.h (muscle_percent_define_get_loc): Prototype. + (muscle_percent_define_get_syncline): Prototype. + * tests/skeletons.at (%define Boolean variables: invalid skeleton + defaults): Update output for location change. + (Complaining during macro argument expansion): Extend to test + b4_percent_define_get_loc and b4_percent_define_get_syncline errors. + +2007-10-07 Joel E. Denny + + Fix some error-reporting macro bugs. + * data/bison.m4 (b4_cat): New. + (b4_error, b4_error_at): Use b4_cat to send error directives directly + to stdout so they don't become arguments to other macros. Update + comments and add examples. + (b4_warn, b4_warn_at, b4_complain, b4_complain_at): Update comments and + add examples. + (b4_fatal, b4_fatal_at): Likewise, and invoke m4_exit(1) immediately + after printing the error directive so that M4 doesn't report subsequent + problems that are induced by this problem. + * src/scan-skel.l: Recognize @` digraph outside of directive arguments + instead of just in them. Recognize @\n in both places. Both expand to + the empty string. Needed by b4_cat. + * tests/skeletons.at (Complaining during macro argument expansion): + New test case. + (Fatal errors make M4 exit immediately): New test case. + +2007-10-04 Joel E. Denny + + Implement --print-datadir. + * src/getargs.c (usage): Mention. + (PRINT_DATADIR_OPTION): New anonymous enum member. + (long_options): Add entry for it. + (getargs): Add case for it calling compute_pkgdatadir. + * src/output.c (output_skeleton): Encapsulate data directory + computation from here... + (prepare): ... and from here... + (compute_pkgdatadir): ... into this new function. + * src/output.h (compute_pkgdatadir): Prototype. + +2007-09-29 Joel E. Denny + + * src/print-xml.c (escape_bufs): New static global variable + replacing... + (xml_escape_n): ... the static local variable buf here. + (print_xml): Free memory for escape_bufs. + * src/reduce.c (reduce_xml): XML-escape terminal symbol tags. + +2007-09-25 Joel E. Denny + + Replace `%push-parser' and `%push-pull-parser' with + `%define push_pull "push"' and `%define push_pull "both"'. + `%define push_pull "pull"' is the default. + * doc/bison.texinfo (Push Decl, Push Parser Function, + Pull Parser Function, Parser Create Function, Parser Delete Function): + Update declarations. + (Decl Summary, Table of Symbols): Replace %push-parser and + %push-pull-parser entries with a %define push_pull entry. + * data/bison.m4 (b4_percent_define_check_values): New macro. + (b4_pull_if, b4_push_if, b4_use_push_for_pull_if): Move these + definitions... + * data/c.m4 (b4_identification): ... and the YYPUSH and YYPULL cpp + definitions... + * data/push.c: ... to here and compute them from the value of the + %define variable push_pull. + * data/c-skel.m4: Instead of choosing the push.c skeleton for push + parsing requests here... + * data/yacc.c: ... hack this to switch to push.c any time + b4_use_push_pull_flag or the %define variable push_pull is set. This + will go away when we mv push.c yacc.c. + * data/c++-skel.m4, data/glr.c, data/java-skel.m4: Don't report that + push parsing is not supported since unused %define variables are + reported anyway. + * src/getargs.c, src/getargs.h (pull_parser, push_parser): Remove. + * src/muscle_tab.h (muscle_percent_define_check_values): Update + comments for consistency with b4_percent_define_check_values. + * src/output.c (prepare): Don't insert b4_pull_flag and b4_push_flag + muscles. + * src/parse-gram.y (PERCENT_PUSH_PARSER, PERCENT_PUSH_PULL_PARSER): + Remove. + (prologue_declaration): Remove %push-parser and %push-pull-parser + rules. + * src/scan-gram.l (%push-parser, %push-pull-parser): Remove rules. + * tests/calc.at: Update declarations. + * tests/input.at (%define enum variables): New test case. + * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update + declaration. + (Push Parsing: Multiple impure instances): Update declaration. + (Push Parsing: Unsupported Skeletons): New test case. + * tests/torture.at (Exploding the Stack Size with Alloca): Update + declaration. + (Exploding the Stack Size with Malloc): Update declaration. + +2007-09-24 Wojciech Polak + + Add XSLT transformations. + + * data/xslt/xml2dot.xsl: Transform XML into DOT. + * data/xslt/xml2text.xsl: Transform XML into plain text. + * data/xslt/xml2xhtml.xsl: Transform XML into XHTML. + * data/Makefile.am (xsltdir): New variable. + (dist_xslt_DATA): Add xslt/*.xsl files. + +2007-09-23 Paul Eggert + + * src/conflicts.c (log_resolution): Fix indenting bugs I introduced. + Problem reported by Wojciech Polak. + * src/print-xml.c (xml_puts): Work even if LEVEL exceeds INT_MAX/2. + (xml_printf): Undo change I made on 21 September; that is, + indent 2 spaces, not 1. + +2007-09-23 Joel E. Denny + + Pacify ./configure --enable-gcc-warnings. + * src/print-xml.c, src/print-xml.h (xml_puts): Make third argument + `char const *' instead of `char *'. + * src/state.c (state_rule_lookahead_tokens_print_xml): Remove unused + local variable `sep'. + +2007-09-21 Paul Eggert + + * src/gram.c (rule_rhs_print_xml): Now static, since it isn't used + elsewhere. + * src/print-xml.c: Prefer "const" after types; that's more consistent. + (xml_printf): Indent just 1 space for level. + (e_char, xlate_char): Remove. + (xml_escape_string): Rewrite to avoid undefined behavior (used + storage that was freed from the stack). + (xml_escape_n): Don't bother checking for subscript error. + +2007-09-21 Wojciech Polak + + Add Bison XML Automaton Report. + + Add support for an -x option to generate an XML report. + It is not documented yet. + * src/print-xml.c: New file. + * src/print-xml.h: Likewise. + * lib/timevar.def (TV_XML): New var. + * src/Makefile.am (bison_SOURCES): Add print-xml.c, print-xml.h. + * src/conflicts.c: Include print-xml.h. + (solved_conflicts_xml_obstack): New var. + (log_resolution, conflicts_solve, conflicts_free): + Add support for XML report. + (conflicts_output_val): New function. + * src/conflicts.h (conflicts_output_val): New decl. + * src/files.c (spec_xml_file): New var. + (compute_output_file_names, output_file_names_free): Add XML support. + * src/files.h (spec_xml_file): New decl. + * src/getargs.c (xml_flag): New var. + (usage, short_options, long_options, getargs): Add XML support. + * src/getargs.h (xml_flag): New decl. + * src/gram.c: Include print-xml.h. + (rule_lhs_print_xml, rule_rhs_print_xml): + (grammar_rules_partial_print_xml, grammar_rules_print_xml): + New functions. + * src/gram.h: Declare external ones. + * src/main.c: Include print-xml.h. + (main): Add XML support. + * src/reduce.c: Include print-xml.h. + (reduce_xml): New function. + * src/reduce.h: Declare it. + * src/state.c: Include print-xml.h. + (state_new): Add XML support. + (state_rule_lookahead_tokens_print_xml): New function. + * src/state.h: Declare it. + (struct state): New member solved_conflicts_xml. + * src/symtab.c (symbol_class_get_string): New function. + * src/symtab.h: Declare it. + +2007-09-21 Paul Eggert + + * GNUmakefile: Switch to coreutils's version. + * bootstrap: Likewise. + * Makefile.cfg: Adjust to new GNUmakefile. + * README-hacking: Likewise. + + Import from gnulib: + + 2006-08-18 Paul Eggert + Bruno Haible + + * m4/bison-i18n.m4 (BISON_I18N): Also handle the case where yacc exists + and is a script that invokes bison. Tighten the code. Add comments. + +2007-08-28 Joel E. Denny + + Spell "boolean" as "Boolean". Reported by Akim Demaille. + * data/bison.m4 (b4_percent_define_flag_if): Fix complaint. + * doc/bison.texinfo (Decl Summary): Fix. + * src/muscle_tab.c (muscle_percent_define_flag_if): Fix complaint. + * tests/input.at (Boolean %define variables): Update output. + * tests/skeletons.at (%define boolean variables: invalid skeleton + defaults): Rename to... + (%define Boolean variables: invalid skeleton defaults): ... this and + update output. + +2007-08-17 Joel E. Denny + + In impure push mode, don't allow more than one yypstate to be allocated + since multiple impure parsers would corrupt yynerrs. + * data/push.c (yypstate_allocated): New static global variable + initialized to 0. + (yypull_parse): If yypstate_new returns 0, don't report it as memory + exhaustion if yypstate_allocated is 1, but still return 2. + (yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is + already 1. Otherwise, set it to 1. + (yypstate_delete): Set it to 0. + * tests/push.at (Push Parsing: Multiple impure instances): New test + case. + +2007-08-17 Bob Rossi + + * doc/bison.texinfo (Push Decl): Document the push parser. + (Table of Symbols): Ditto. + (Pure Decl): Ditto. + (Decl Summary): Ditto. + (Multiple Parsers, Push Parser Function, Pull Parser Function, + Parser Create Function, Parser Delete Function): + Add new push parser symbols. + (Table of Symbols): Document push-parser, push-pull-parser, + yypush_parse, yypull_parse, yypstate_new and yypstate_delete. + +2007-08-15 Paul Eggert + + Update to GPLv3. + * doc/gpl-3.0.texi: New file. + * doc/gpl.texi: Remove. + * COPYING, GNUmakefile, HACKING, Makefile.am, Makefile.cfg: + * Makefile.maint, NEWS, PACKAGING, README, README-alpha: + * README-hacking, TODO, bootstrap, bootstrap.conf: + * configure.ac, data/Makefile.am, data/README, data/bison.m4: + * data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4: + * data/glr.c, data/glr.cc, data/java-skel.m4, data/java.m4: + * data/lalr1.cc, data/lalr1.java, data/location.cc: + * data/push.c, data/yacc.c, data/m4sugar/m4sugar.m4: + * djgpp/Makefile.maint, djgpp/README.in, djgpp/config.bat: + * djgpp/config.sed, djgpp/config.site, djgpp/config_h.sed: + * djgpp/djunpack.bat, djgpp/subpipe.c, djgpp/subpipe.h: + * djgpp/testsuite.sed, doc/Makefile.am, doc/bison.texinfo: + * doc/fdl.texi, doc/refcard.tex, etc/Makefile.am, etc/README: + * etc/bench.pl.in, examples/Makefile.am, examples/extexi: + * examples/calc++/Makefile.am, lib/Makefile.am, lib/abitset.c: + * lib/abitset.h, lib/bbitset.h, lib/bitset.c, lib/bitset.h: + * lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c: + * lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h: + * lib/ebitset.c, lib/ebitset.h, lib/get-errno.c: + * lib/get-errno.h, lib/lbitset.c, lib/lbitset.h: + * lib/libiberty.h, lib/main.c, lib/subpipe.c, lib/subpipe.h: + * lib/timevar.c, lib/timevar.def, lib/timevar.h: + * lib/vbitset.c, lib/vbitset.h, lib/yyerror.c: + * m4/c-working.m4, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4: + * m4/timevar.m4, src/LR0.c, src/LR0.h, src/Makefile.am: + * src/assoc.c, src/assoc.h, src/closure.c, src/closure.h: + * src/complain.c, src/complain.h, src/conflicts.c: + * src/conflicts.h, src/derives.c, src/derives.h, src/files.c: + * src/files.h, src/flex-scanner.h, src/getargs.c: + * src/getargs.h, src/gram.c, src/gram.h, src/graphviz.c: + * src/lalr.c, src/lalr.h, src/location.c, src/location.h: + * src/main.c, src/muscle_tab.c, src/muscle_tab.h: + * src/nullable.c, src/nullable.h, src/output.c, src/output.h: + * src/parse-gram.c, src/parse-gram.h, src/parse-gram.y: + * src/print.c, src/print.h, src/print_graph.c: + * src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c: + * src/reduce.h, src/relation.c, src/relation.h: + * src/revision.h, src/scan-code.h, src/scan-code.l: + * src/scan-gram.h, src/scan-gram.l, src/scan-skel.h: + * src/scan-skel.l, src/state.c, src/state.h, src/symlist.c: + * src/symlist.h, src/symtab.c, src/symtab.h, src/system.h: + * src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h: + * tests/Makefile.am, tests/actions.at, tests/c++.at: + * tests/calc.at, tests/conflicts.at, tests/cxx-type.at: + * tests/existing.at, tests/glr-regression.at: + * tests/headers.at, tests/input.at, tests/java.at: + * tests/local.at, tests/output.at, tests/push.at: + * tests/reduce.at, tests/regression.at, tests/sets.at: + * tests/skeletons.at, tests/synclines.at, tests/testsuite.at: + * tests/torture.at: + Update to GPLv3. + +2007-08-11 Joel E. Denny + + Get rid of broken %no-parser, -n, and --no-parser implementation and + documentation. + * TODO: Don't mention them. + * doc/bison.1: Likewise. + * doc/bison.texinfo (Decl Summary): Likewise. + (Bison Options): Likewise. + (Option Cross Key): Likewise. + * src/getargs.c (no_parser_flag): Remove global variable. + (usage): Don't print description of -n and --no-parser. + (long_options): Remove --no-parser entry here. + (getargs): Remove -n case in the switch here. + * src/getargs.h (no_parser_flag): Remove extern. + * tests/regression.at (Web2c Actions): Remove comment that mentions + --no-parser. + +2007-08-11 Joel E. Denny + + * tests/push.at (Push Parsing: Memory Leak for Early Deletion): Do not + name user variables starting with `yy'. Just pass NULL instead of a + dummy local &yylval to yypush_parse. + * tests/torture.at (AT_DATA_STACK_TORTURE): Do not name user variables + starting with `yy'. + +2007-08-03 Joel E. Denny + + * data/yacc.c (yyexhaustedlab): Define it when YYERROR_VERBOSE is + true since it's then always used regardless of whether yyoverflow is + defined. Reported by Christian Burger at + . + * THANKS: Add Christian Burger. + + * ChangeLog: For changes in doc/bison.texinfo, consistently reference + node names: say "Decl Summary" not "Bison Declaration Summary". + +2007-07-28 Joel E. Denny + + * src/muscle_tab.c (muscle_percent_define_flag_if): In order to + determine whether this function has already complained about an invalid + value for a %define boolean variable, don't check whether Bison has + ever examined the value. As written, the check was a tautology. + Instead, record and check for this complaint using a separate muscle. + +2007-07-27 Joel E. Denny + + Fix push parsing memory leak reported by Brandon Lucia at + . + * THANKS: Add Brandon Lucia. + * data/push.c (yypstate_delete): Free the stack if it was reallocated + but the parse never completed and thus freed it. + * tests/Makefile.am (TESTSUITE_AT): Add push.at. + * tests/testsuite.at: Include push.at. + * test/push.at: New. + (Push Parsing: Memory Leak for Early Deletion): New test case. + +2007-07-17 Joel E. Denny + + Improve handling of multiple S/R conflicts in the same state and of S/R + conflicts involving multiple reductions. + * src/conflicts.c (resolve_sr_conflict): Don't assign the error action + set for a state here or Bison will abort if it is reassigned on a + later conflicted reduction in the same state. + Similarly, don't finalize and assign the solved conflicts report here + or it will be lost if it is reassigned on a later conflicted reduction + in the same state. + (set_conflicts): Instead, assign them both here after all S/R conflicts + in the state have been fully examined. + * src/print.c (shift_set): Rename to... + (no_reduce_set): ... this. + (print_reductions): Update for rename, and add %nonassoc error action + tokens to no_reduce_set so that, when printing the first remaining + reduction on an error action token, the reduction is enclosed in + brackets. + (print_results): Update for rename. + * tests/conflicts.at (Solved conflicts report for multiple reductions + in a state): New test case. + (%nonassoc error actions for multiple reductions in a state): New test + case. + + * src/main.c (main): Don't depend on C99 features. + +2007-07-16 Joel E. Denny + + * build-aux/.cvsignore: Add compile. + * lib/.cvsignore: Add charset.alias, ref-add.sed, ref-del.sed, and + uniwidth. + +2007-07-10 Joel E. Denny + + * bootstrap (slurp): Create target directories that don't exist. + Specifically, we need lib/uniwidth/ because of recent Gnulib changes. + +2007-07-09 Joel E. Denny + + * LR0.c (new_itemsets): Fix wording in comments: say item index rather + than item number. + * closure.c (closure): Likewise. + * state.h (reductions): Comment sorting of rules. + (state): Comment sorting of items. + +2007-07-02 Joel E. Denny + + Fix C++ test cases after recent Gnulib changes. Discussed starting at + . + * examples/calc++/Makefile.am (DEFAULT_INCLUDES): Override Automake's + definition in order to avoid Gnulib headers since we don't use config.h + here. + * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Use AT_DATA_GRAMMAR + rather than AT_DATA so that config.h is included. + +2007-07-01 Joel E. Denny + + * data/glr.c (yy_yypstack, yypstates, yypdumpstack): Use YYFPRINTF + instead of fprintf. Guard these functions with #if YYDEBUG instead of + #ifdef YYDEBUG for consistency with all other uses of YYDEBUG in Bison + and so that YYFPRINTF is guaranteed to be defined here. + +2007-05-29 Joel E. Denny + + * src/muscle_tab.c (muscle_percent_define_invalid_value): Replace + with... + (muscle_percent_define_check_values): ... this more helpful function. + Again, it's not used yet, but it will be. + * src/muscle_tab.h: Likewise. + + Improve some comments in parser table construction. + * src/LR0.c (new_itemsets): Explain sorting of itemset and kernel_base. + (generate_states): Don't mention ruleset, which is internal to closure. + * src/closure.c (closure): Explain sorting of core and itemset, which + is required for this function to behave correctly. + * src/closure.h (closure): Mention sorting. + +2007-05-28 Joel E. Denny + + * src/lalr.c (state_lookahead_tokens_count): For code readability, + move the check for disabled transitions to an aver since conflict + resolution hasn't happened yet. + + * src/lalr.c (state_lookahead_tokens_count): Remove the check that + labels a state as inconsistent just because it has error transitions. + The original form of this check appeared in revision 1.1 of lalr.c, + which was committed on 1991-12-21. Now (at least), changing the + consistency label on such a state appears to have no useful effect in + any of the places it is examined, which I enumerate below. The key + point to understanding each item in this enumeration is that a state + with an error transition is labelled consistent in the first place only + if it has no rules, so the check cannot matter for states that have + rules. (1) Labelling a state as inconsistent will cause set_conflicts + to try to identify its conflicts, and a state must have *rules* to have + conflicts. (2) Labelling a state as inconsistent will affect how + action_row sets the default *rule* for the state. (3) Labelling a + state as inconsistent will cause build_relations to add lookback edges + to *rules* in that state. + * src/state.h (struct state): Word the comment for member consistent + more carefully. + +2007-05-27 Joel E. Denny + + Don't depend on C99 features. + * src/conflicts.c (conflicts_update_state_numbers): Fix for-loop. + * src/lalr.c (lalr_update_state_numbers): Fix for-loop. + * src/reader.c (check_and_convert_grammar): Fix for-loop. + * src/state.c (state_mark_reachable_states): Fix for-loop. + (state_remove_unreachable_states): Fix for-loop. + + Don't widen struct state with member reachable just to temporarily + record reachability. Instead, use a local bitset. + * src/state.h (struct state): Remove member. + * src/state.c (state_new): Don't initialize it. + (state_mark_reachable_states): Rename to... + (state_record_reachable_states): ... this, and use bitset. + (state_remove_unreachable_states): Use bitset. + +2007-05-26 Joel E. Denny + + * src/Makefile.am (yacc): Quote target action commands properly so + that the yacc script isn't corrupt. Reported by Hans Aberg at + . + + * data/glr.c (yylval): As in yacc.c, don't extern in the header for + the case of pure parsers. Reported by Frans Englich at + . + * THANKS: Add Frans Englich. + + * NEWS (2.3a+): In the %code entry, reference section `Bison + Declaration Summary' from the manual now since the %code summary has + moved there. + * doc/bison.texinfo (Prologue Alternatives): Mention that directives + in the rules section must be terminated by semicolons. + +2007-05-20 Joel E. Denny + + Extend the front-end API for %define variables to more completely + mirror the back-end. This will be useful in the future. + * data/bison.m4 (b4_percent_define_get, b4_percent_define_ifdef): + Update comments to mention the new front-end counterparts of these + macros. + * src/muscle_tab.c (MUSCLE_COMMON_DECODE): New macro with common code + for muscle_string_decode and muscle_location_decode. + (muscle_string_decode): New static function. + (muscle_location_decode): Use MUSCLE_COMMON_DECODE. + (muscle_percent_define_get, muscle_percent_define_ifdef): New + functions. + (muscle_percent_define_flag_if): Use muscle_percent_define_ifdef and + muscle_percent_define_get to mimic the b4_percent_define_flag_if + implementation more closely. + (muscle_percent_define_invalid_value): New function. + * src/muscle_tab.h (muscle_percent_define_get, + muscle_percent_define_ifdef, muscle_percent_define_invalid_value): + Prototype. + +2007-05-07 Joel E. Denny + + * NEWS (2.3a+): Mention yesterday's state-removal change. + (2.3a): Remove the %language entry, which was added after 2.3a. + * src/LR0.c, src/closure.c, src/closure.h, src/conflicts.c, + src/conflicts.h, src/lalr.c, src/lalr.h, src/print.c, + src/print_graph.c, src/state.c, src/state.h, tests/conflicts.at, + tests/existing.at: Update copyright date. + +2007-05-06 Joel E. Denny + + If conflict resolution makes states unreachable, remove those states, + report rules that are then unused, and don't report conflicts in those + states. + * src/conflicts.c, src/conflicts.h (conflicts_update_state_numbers): + New global function. + * src/lalr.c, src/lalr.h (lalr_update_state_numbers): New global + function. + * src/main.c (main): After conflict resolution, remove the unreachable + states and update all data structures that reference states by number. + * src/state.c (state_new): Initialize each state's reachable member to + false. + (state_mark_reachable_states): New static function. + (state_remove_unreachable_states): New global function. + * src/state.h (struct state): Add member bool reachable. + (state_remove_unreachable_states): Prototype. + * tests/conflicts.at (Unreachable States After Conflict Resolution): + New test case. + * tests/existing.at (GNU pic Grammar): Update test case output now that + an unused rule is discovered. + +2007-05-06 Joel E. Denny + + Minor code cleanup in parser table construction. + * src/LR0.c (new_itemsets): Use item_number_is_symbol_number. + (new_itemsets, save_reductions): Update for rename to nitemset. + * src/closure.c (nritemset): Rename to... + (nitemset): ... this since the "r" appears to meaningless and isn't + used in the comments. + (closure): Update for rename. + * src/closure.h (nritemset): Update extern to... + (nitemset): ... this. + * src/lalr.c (LA): Fix a typo in comments. + * src/print.c (print_core): Update for rename to nitemset. + * src/print_graph.c (print_graph): Likewise. + * src/state.h: Fix some typos in header comments. + +2007-04-04 Paul Eggert + + * THANKS: Use ASCII for Sebastien Fricker's name. Bison source + still sticks to ASCII. Sorry! + + * README-hacking: New file, taken mostly from coreutils, with changes + for Bison. Contains much of the contents of: + * README-cvs: Remove. + * bootstrap: Sync from gnulib. + * build-aux/.cvsignore: Remove *.t, mkinstalldirs. + * lib/.cvsignore: Add wchar.h, wctype.h. Remove exit.h. + +2007-03-10 Joel E. Denny + + * doc/bison.texinfo (Destructor Decl): Fix typo reported by Sebastian + Setzer. + (Java Differences): Fix some typos. + * THANKS: Add Sebastian Setzer. + +2007-03-07 Paolo Bonzini + + * data/java.m4 (b4_single_class_if): Remove. + (b4_abstract_if): Look at "%define abstract". + (b4_lexer_if): New. + (b4_union_name): Rename... + (b4_yystype): ... to this. Map to "%define stype". + (b4_rhs_value, b4_parse_param_decl, b4_lex_param_decl, + b4_maybe_throws): Fix quoting. + (b4_lex_param_call): Move below to keep b4_*_param_decl close. + * data/lalr1.java (Lexer interface): Always define. + (Lexer interface within parser class): Remove. + (YYLexer class): New, used when "%code lexer" is present. + (constructor): When "%code lexer" is used, pass %lex-param + to the lexer constructor. + (yylex, yyparse): Remove %lex-param from method invocations + (YYStack, yyaction, yyparse): Rename b4_union_name to b4_yystype. + + * doc/bison.texinfo (Java Bison Interface): Mention "%define + abstract". Rename "%define union_name" to "%define stype". + Rename method names according to previous patch. + (Java Scanner Interface): Describe "%code lexer" instead of + "%pure-parser" and "%define single_class". + (Java Differences): Mention "%code lexer". + + * tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove final argument. + Include scanner here, using macros from tests/local.at. + (AT_DATA_CALC_Y): Remove final argument. + (_AT_CHECK_JAVA_CALC): Likewise. + (AT_CHECK_JAVA_CALC): Likewise. Test all four combinations + of %locations and %error-verbose. + (main): Test with and without %lex-param. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_LEXPARAM_IF. + (AT_BISON_OPTION_POPDEFS): Pop it. + +2007-03-07 Juan Manuel Guerrero + + DJGPP spefic issue. Inhibit the use of disallowed characters for + file name genertion on Win98, WinXP, etc. These are |<>":?*\ + and concern testsuite case 46. + * Makefile.am: djgpp/testsuite.sed added to EXTRA_DIST + * djgpp/testsuite.sed: Inhibit the use of disallowed characters. + * djgpp/config.bat: Inhibit the use of disallowed characters. + +2007-03-02 Joel E. Denny + + Miscellaneous %define and %code cleanup. + * data/bison.m4 (b4_percent_define_flag_if): Correct comments on how + values are interpreted. + * doc/bison.texinfo (Decl Summary): Clean up and extend %define + documentation a little more. + * src/muscle_tab.c (MUSCLE_USER_NAME_CONVERT, + muscle_percent_define_insert, muscle_percent_code_grow): New + functions/macros. + * src/muscle_tab.h (muscle_percent_define_insert, + muscle_percent_code_grow): Prototype. + * src/parse-gram.y (prologue_declaration): Use + muscle_percent_define_insert and muscle_percent_code_grow when parsing + %define and %code directives. + + Make it easy to share %define boolean variables between the front-end + and back-end. Though not used yet, this will be useful in the future. + * data/bison.m4 (b4_check_user_names): Rewrite comments to talk about + Bison uses of names rather than just skeleton uses of names. + (b4_percent_define_get, b4_percent_define_ifdef): Rename + b4_percent_define_skeleton_variables(VARIABLE) to + b4_percent_define_bison_variables(VARIABLE). + (b4_percent_code_get, b4_percent_code_ifdef): Rename + b4_percent_code_skeleton_qualifiers(QUALIFIER) to + b4_percent_code_bison_qualifiers(QUALIFIER). + (b4_check_user_names_wrap): Update for renames. + * src/muscle_tab.c, src/muscle_tab.h (muscle_percent_define_flag_if, + muscle_percent_define_default): New functions mimicking + b4_percent_define_flag_if and b4_percent_define_default. + + For %define variables, report locations for invalid values and + redefinitions. + * data/bison.m4 (b4_percent_define_flag_if): Read + b4_percent_define_loc(VARIABLE) to report the location of an invalid + value for VARIABLE. + (b4_percent_define_default): Save a special location in + b4_percent_define_loc(VARIABLE) in case the default value for VARIABLE + must later be reported as invalid. + * src/muscle_tab.c (muscle_location_grow, muscle_location_decode): New + functions. + (muscle_percent_define_insert): Record the location of VARIABLE in + muscle percent_define_loc(VARIABLE), and use it to report the previous + location for a redefinition. + (muscle_percent_define_flag_if): Update like b4_percent_define_flag_if. + (muscle_percent_define_default): Update like b4_percent_define_default. + (muscle_grow_user_name_list): Rename to... + (muscle_user_name_list_grow): ... this for consistency and use + muscle_location_grow. + * src/muscle_tab.h (muscle_location_grow): Prototype. + * tests/input.at (%define errors): Update expected output. + * tests/skeletons.at (%define boolean variables: invalid skeleton + defaults): New test case. + +2007-02-28 Joel E. Denny + + * src/print.c (lookahead_set, state_default_rule): Remove. + (print_reductions): Replace state_default_rule invocation with + equivalent use of yydefact, which was computed in token_actions in + tables.c. + (print_results): Don't allocate lookahead_set. + +2007-02-27 Paolo Bonzini + + * data/lalr1.java: Prefix all private members with yy. + +2007-02-24 Joel E. Denny + + Use YYFPRINTF instead of fprintf where appropriate. Reported by + Sebastien Fricker at + . + * THANKS: Add Sebastien Fricker. + * data/glr.c, data/push.c, data/yacc.c (yy_reduce_print): Implement. + * doc/bison.texinfo (Tracing): Make it clearer that YYFPRINTF must + accept a variable number of arguments. + +2007-02-19 Joel E. Denny + + * bootstrap: Remove occurrences of .#bootmp from lib/Makefile. + +2007-02-13 Juan Manuel Guerrero + + * djgpp/config.bat: Adjustments concerning the use of autoconf 2.61. + * djgpp/config.sed: Adjustments concerning the use of autoconf 2.61. + * djgpp/config.site: Adjustments concerning the use of autoconf 2.61. + +2007-02-11 Paul Eggert + + Undo my 2007-02-07 change, switching back to the c-strcase module + introduced in the 2007-02-03 change. Bruno Haible reported that + the 2007-02-07 change would be dangerous in Turkish if we add a + language whose name contains "i", since "i" is not lowercase "I" + in Turkish. + * bootstrap.conf (gnulib_modules): Add c-strcase. Remove strcase. + * lib/.cvsignore: Add c-ctype.c, c-ctype.h, c-strcase.h, + c-strcasecomp.c, c-strncasecmp.c. Remove strcasecmp.c, strncasecmp.c. + * m4/.cvsignore: Remove strcase.m4. + * src/getargs.c: Revert 2007-02-07 change, as follows. + Include c-strcase.h. + (language_argmatch): Use c_strcasecmp rather than strcasecmp. + +2007-02-11 Bruno Haible + + Enable the Java related testsuite tests when the only Java compiler + found is a gcj < 4.3. Discussed at + . + * configure.ac (gt_JAVACOMP): Don't specify a target_version. + +2007-02-11 Joel E. Denny + + * data/Makefile.am: Update copyright date. + * data/push.c (yypull_parse): Report memory exhaustion and return 2 if + yypstate_new returns NULL. + (yypstate_new): Return NULL if malloc does. + * src/reader.c (packgram): Move translation of rule actions from the + beginning of packgram to... + (check_and_convert_grammar): ... here right before packgram is invoked + so it's easier to write more complete comments, and remove redundant + code. + +2007-02-10 Joel E. Denny + + As in semantic actions, make @$ in %initial-action, %destructor, and + %printer imply %locations. + * src/scan-code.l (SC_SYMBOL_ACTION): Set locations_flag = true when + scanning @$. + * tests/actions.at (AT_CHECK_ACTION_LOCATIONS): New macro supporting... + (@$ in %initial-action implies %locations, + @$ in %destructor implies %locations, + @$ in %printer implies %locations): ... these new test cases. + +2007-02-07 Paul Eggert + + Undo most of the 2007-02-03 change, switching to the strcase module + now that gnulib strcase has been fixed. + * bootstrap.conf (gnulib_modules): Remove c-strcase. Add strcase. + * lib/.cvsignore: Remove c-ctype.c, c-ctype.h, c-strcase.h, + c-strcasecomp.c, c-strncasecmp.c. Add strcasecmp.c, strncasecmp.c + * m4/.cvsignore: Add strcase.m4. + * src/getargs.c: Revert 2007-02-03 change, as follows. + Don't include c-strcase.h. + (language_argmatch): Use strcasecmp rather than c_strcasecmp. + strcasecmp has "unspecified behavior" outside the POSIX locale, + but it works fine in practice if at least one argument is ASCII, + as is the case in Bison. + +2007-02-07 Paolo Bonzini + + * tests/java.at: Skip tests if only one of javac/java is present. + Reported by Joel E. Denny. + * tests/atlocal.in: Adjust copyright years. + +2007-02-05 Paolo Bonzini + + * data/lalr1.java (Stack): Work around old verifiers that disallow + access to the private fields of an inner class, from the outer class. + We can make Stack's fields public because user code doesn't have access + to the instance of Stack used by parse(). Reported by Paul Eggert. + +2007-02-03 Paul Eggert + + * .cvsignore: Add javacomp.sh, javaexec.sh. Is this really + the right spot for these files? + * bootstrap.conf (gnulib_modules): Add c-strcase. + * lib/.cvsignore: Add c-ctype.c c-ctype.h, c-strcasecomp.c, + c-strncasecmp.c. + * src/getargs.c: Include c-strcase.h. + (language_argmatch): Use c_strcasecmp rather than strcasecmp, + to avoid unspecified behavior. + +2007-02-01 Joel E. Denny + + * doc/bison.texinfo (Decl Summary): Correct typo. + +2007-01-30 Paolo Bonzini + + * data/bison.m4 (b4_percent_define_flag_if): Don't treat 0 as false. + Complain if the value does not match empty, "true" or "false". + * data/c++.m4: Adjust default definitions of %define variables. + * data/java.m4: Adjust default definitions of %define variables. + * doc/bison.texinfo (Decl Summary): Adjust the %define entry according + to above behavior. + * tests/input.at (Boolean %define variables): Test new behavior. + +2007-01-29 Paolo Bonzini + + * NEWS: Mention java. + * TODO: Remove things that are done. + * bootstrap.conf: Add javacomp-script and javaexec-script. + * configure.ac: Invoke gt_JAVACOMP and gt_JAVAEXEC. + + * data/Makefile.am: Add new files. + * data/java-skel.m4: New. + * data/java.m4: New. + * data/lalr1.java: New. + + * doc/bison.texinfo: Put "A Complete C++ Example" under + C++ Parsers. Add Java Parsers. Put C++ Parsers and Java Parsers + under Other Languages. + + * src/getargs.c (valid_languages): Add Java. + * src/getargs.h (struct bison_language): Update size of string fields. + + * tests/Makefile.am: Add java.at. + * tests/atlocal.in: Add CONF_JAVA and CONF_JAVAC. + * tests/java.at: New. + * tests/testsuite.at: Include it. + +2007-01-28 Joel E. Denny + + Clean up. + * src/scan-skel.l (at_directive_perform): Add at_directive_argc and + at_directive_argv arguments so these no longer have to be global + variables. Also, update the implementation for the following changes. + (fail_for_at_directive_too_many_args, + fail_for_at_directive_too_few_args): Add at_directive_name argument. + (at_directive_name): Remove as at_directive_argv[0] will be used for + this now. + (AT_DIRECTIVE_ARGC_MAX): Increment to make space in at_directive_argv + for the directive name. + (at_directive_argc, at_directive_argv): Make these local within + skel_lex instead of global. + (INITIAL): Update directive start action for above changes. + (SC_AT_DIRECTIVE_ARG): Rename to... + (SC_AT_DIRECTIVE_ARGS): ... this, and update for above changes. + (SC_AT_DIRECTIVE_SKIP_WS): Update. + (scan_skel): Move yylex_destroy to... + (skel_scanner_free): ... here. + * tests/skeletons.at (installed skeleton file name): Rename to... + (installed skeleton file names): ... this. + +2007-01-27 Joel E. Denny + + * ChangeLog: For changes in doc/bison.texinfo, consistently reference + node names: say "Table of Symbols" not "Bison Symbols", and say "Decl + Summary" not "Directives". + * doc/bison.texinfo (Decl Summary, Calc++ Parser): Cross-reference the + %code entry in "Decl Summary" rather than the one in "Table of Symbols" + since the former is now the more complete one. + (Prologue Alternatives): Likewise and do the same for %defines. + (Table of Symbols): Add summary of %code, add summary of %define, and + move full %code documentation to... + (Decl Summary): ... here for consistency with other entries in these + sections. + Move %define entry in order to keep this list alphabetized. + Reword %define entry a little to put less emphasis on the skeleton + concept, which most users shouldn't have to think about. + +2007-01-26 Paul Eggert + + Adjust to recent gnulib changes. + * lib/.cvsignore: Remove stpcpy.h, strndup.h, strnlen.h. + Add string.h, string_.h, unistd_.h, wchar_.h. + * m4/.cvsignore: Add gnulib-common.m4, string_h.m4, wchar.m4. + * src/system.h: Don't include ; this is now done by + . + +2007-01-23 Paolo Bonzini + + Simplify implementation of unqualified %code, implement macros for + uniform treatment of boolean %define flags. Document %define. + * data/bison.m4 (b4_percent_define_ifdef, b4_percent_define_flag_if, + b4_percent_code_ifdef): New. + (b4_percent_code_get): Map unqualified %code to b4_percent_code(). + * data/c++.m4: Define default value for global_tokens_and_yystype. + * data/glr.cc: Likewise. + * data/location.cc: Use b4_percent_define_flag_if. + + * doc/bison.texinfo (Decl Summary): Document %define. + + * src/parse-gram.y (Unqualified %code): Change muscle name to + b4_percent_code(). + (content.opt): Default to empty. + +2007-01-17 Joel E. Denny + + Implement support for relative and absolute skeleton file names. + Discussed starting at + . + * doc/bison.texinfo (Decl Summary): Document in %skeleton entry. + (Bison Options): Document in --skeleton entry. + * src/output.c (output_skeleton): Use strncpy rather than strcpy since + full_skeleton can't necessarily hold all of pkgdatadir. + If the specified skeleton file name contains a `/', don't prepend + pkgdatadir. + * src/parse-gram.y (prologue_declaration): If the specified skeleton + file name contains a `/', prepend the grammar file directory. + * tests/Makefile.am (TESTSUITE_AT): Add skeletons.at. + * skeletons.at: New file. + (relative skeleton file names): New test case. + (installed skeleton file names): New test case. + * tests/testsuite.at: Include skeletons.at. + + * bootstrap: Update copyright to 2007. + +2007-01-17 Paolo Bonzini + + * bootstrap: Remove occurrences of .#bootmp from the files. + +2007-01-17 Akim Demaille + + * doc/bison.texinfo (Calc++ Parser): Don't try to alias + nonterminals. + Use per-type %printer. + +2007-01-17 Joel E. Denny + + * NEWS, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4, + data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc, + djgpp/config.site, src/files.c, src/files.h, src/main.c, + src/muscle_tab.c, src/muscle_tab.h, src/parse-gram.y, src/reader.h, + src/scan-skel.h, src/scan-skel.l, tests/actions.at, tests/calc.at, + tests/glr-regression.at, tests/input.at, tests/local.at, + tests/output.at, tests/torture.at: Update copyright to 2007. + +2007-01-16 Akim Demaille + + * doc/bison.texinfo (Calc++ Parsing Driver): Let "parse" return an + error code. + (Calc++ Scanner): Exit with failure if we can't open the input + file. + Accept "-" standing for stdin. + (Calc++ Top Level): Print the result only if the parsing was + successful. + +2007-01-16 Akim Demaille + + * data/lalr1.cc (yy_reduce_print_): Add a missing end-of-line. + +2007-01-15 Paolo Bonzini + and Joel E. Denny + + Clean up %define and %code implementation in M4 some. Most + importantly, rename all related macros to be in the b4_percent_define + and b4_percent_code namespaces. Also, complete support for `.' in + %define variable names and %code qualifiers. + * data/bison.m4 (b4_check_user_names): Check for special + "SKELETON-NAMESPACE(name)" macros instead of using two nested + m4_foreach loops. + (b4_get_percent_define, b4_get_percent_code): Rename to... + (b4_percent_define_get, b4_percent_code_get): ... these. + Extend documentation with examples. + For SKELETON-NAMESPACE (as documented for b4_check_user_names), use + b4_percent_define_skeleton_variables and + b4_percent_code_skeleton_qualifiers. + Expect any value for the %define variable `foo' to be stored in the + macro named `b4_percent_define(foo)'; expect any %code blocks for the + qualifier `foo' to be stored in a macro named `b4_percent_code(foo)'; + expect any unqualified %code blocks to be stored in a macro named + `b4_percent_code_unqualified'. + Use m4_indir so that %define variable names and %code qualifiers can + contain `.', which is allowed by the grammar parser. + (b4_percent_define_default): New macro to set a default value for a + %define variable. + (m4_wrap): Update wrapped code, and fix some underquoting. + (b4_check_user_names_wrap): Update and define outside the m4_wrap. + Expect grammar uses of %define variables and %code qualifiers to be + defined in b4_percent_define_user_variables and + b4_percent_code_user_qualifiers. + * data/c++.m4: Use b4_percent_define_default rather than + m4_define_default. Fix some underquoting. Skeleton usage of %define + variable define_location_comparison now implies skeleton usage of + %define variable filename_type. + * data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc, + data/push.c, data/yacc.c: Update macro names. + * src/parse-gram.y (prologue_declaration, grammar_declaration): Update + muscle names. + +2007-01-14 Juan Manuel Guerrero + + DJGPP specific issues. + + * djgpp/config.site: Set ac_cv_path_mkdir to a sane DJGPP specific + default. Set gl_cv_absolute_wctype_h to a sane DJGPP specific default. + +2007-01-09 Joel E. Denny + + * tests/glr-regression.at: Use AT_PARSER_CHECK rather than AT_CHECK to + run parsers in all tests so that Valgrind is invoked during + maintainer-check-valgrind. + (Duplicate representation of merged trees): Free all semantic values. + (Duplicated user destructor for lookahead): Likewise. + +2007-01-09 Joel E. Denny + + * tests/local.at (AT_PARSER_CHECK): Add a PRE argument to specify a + command-line prefix. + * tests/torture.at (Exploding the Stack Size with Alloca): Stderr is + ignored, so use that PRE to set --log-fd=1 in VALGRIND_OPTS so we don't + miss Valgrind messages. + (Exploding the Stack Size with Malloc): Likewise. + +2007-01-09 Joel E. Denny + + Ignore YYSTACK_USE_ALLOCA for push parsers since the stacks can't be + locals. Reported by Juan Manuel Guerrero at + . + * data/push.c: Enclose the #ifdef YYSTACK_USE_ALLOCA in b4_push_if. + Fix some indentation also. + * tests/torture.at (Exploding the Stack Size with Alloca): Add comment + explaining this issue. + +2007-01-09 Paolo Bonzini + and Joel E. Denny + + Simplify union and prologue handling, and escape union and lex/parse + params with digraphs. + * data/bison.m4 (b4_pre_prologue, b4_post_prologue): Set their default + values to the empty string since these are no longer guaranteed + initialized by the front-end. + * data/glr.c, data/glr.cc, data/lalr1.cc, data/push.c, data/yacc.c: Add + braces around b4_user_stype since this is no longer done by the + front-end. + * src/files.c, src/files.h (pre_prologue_obstack, + post_prologue_obstack): Remove. + * src/muscle_tab.c (muscle_pair_list_grow): Don't duplicate header + comments here. Use MUSCLE_OBSTACK_SGROW so that values are escaped + with digraphs. This fixes lex params and parse params. + * src/muscle_tab.h (muscle_pair_list_grow): Update comments. + * src/output.c (prepare): Remove muscle insertion of the prologues. + (output): Remove freeing of pre_prologue_obstack and + post_prologue_obstack. + * src/parse-gram.y (prologue_declaration): Use muscle_code_grow rather + than prologue_augment for prologue parsing so you don't need prologue + obstacks. + (grammar_declaration): For %union RHS, use `braceless' instead of + "{...}" so that braces are already stripped and code is escaped with + digraphs. + * src/reader.c (prologue_augment): Remove. + (reader): Remove initialization of pre_prologue_obstack and + post_prologue_obstack. + * src/reader.h (prologue_augment): Remove. + + * data/c.m4: Remove stray parenthesis. + +2007-01-08 Joel E. Denny + + Remove quotes from variables names in %define directives and from + qualifiers in %code directives, and restrict the characters that are + allowed in them to M4-friendly ones. For %define, continue to support + the quoted form as a deprecated feature. Discussed starting at + . + * NEWS (2.3a+): Add entry for the change to %define. Update entry for + %code. + * doc/bison.texinfo (Prologue Alternatives): Update. + (Decl Summary): In %defines entry, update mention of `%code requires' + and `%code provides'. + (C++ Location Values): Update %define uses. + (Calc++ Parser Interface): Likewise. + (Calc++ Parser): Likewise, and update `%code requires' uses. + (Table of Symbols): Update %code documentation. + * src/parse-gram.y (prologue_declaration): For %define variables, use + `variable' instead of `STRING'. + (grammar_declaration): For %code qualifiers, use `ID' instead of + `STRING'. + (variable): New nonterminal that takes an `ID' or a `STRING'. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code + and %define uses. + * tests/calc.at (_AT_DATA_CALC_Y): Update %define use. + * tests/input.at (Reject unused %code qualifiers): Update %code uses. + (%define errors): Update %define uses. + +2007-01-08 Joel E. Denny + + * src/parse-gram.y (prologue_declaration): Use MUSCLE_INSERT_STRING + instead of muscle_insert for %define values so that M4-special + characters are replaced with digraphs. + * tests/input.at (%define errors): Extend to check weird values. + +2007-01-08 Joel E. Denny + + Instead of having skeletons declare all valid %define variables and + %code qualifiers, provide macros that retrieve the associated values + and build these lists automatically. Thus Bison will now warn when a + variable or qualifier is not used by the skeleton in the current + invocation regardless of whether it might sometimes be used by that + skeleton in other invocations. Also, move all %define value macros to + the b4_percent_define_ namespace, and remove the %define "NAME" {CODE} + form, which is replaced by %code. + * data/bison.m4 (b4_check_for_unrecognized_names): Rename to... + (b4_check_user_names): ... this, and change the series of valid name + arguments to a single list argument for names used in the skeleton + similar to the existing list argument for names used in the grammar. + Warn instead of complaining. + (b4_get_percent_define, b4_get_percent_code): New to retrieve %define + values and %code code, to format %code code properly, and to build + lists of all %define variables and %code qualifiers used in the + skeleton: b4_skeleton_percent_define_variables and + b4_skeleton_percent_code_qualifiers. + (b4_check_percent_define_variables, b4_check_percent_code_qualifiers): + Remove, and... + (m4_wrap): ... m4_wrap b4_check_user_names invocations instead so that + the skeleton names lists can finish building first. In place of + b4_used_percent_define_variables and b4_used_percent_code_qualifiers, + expect the lists b4_user_percent_define_variables and + b4_user_percent_code_qualifiers. + * data/c++.m4: Where setting default values for b4_parser_class_name, + b4_location_type, b4_filename_type, b4_namespace, and + b4_define_location_comparison, update their names to the + b4_percent_define_ namespace. + * data/glr.c: Don't use b4_check_percent_define_variables and + b4_check_percent_code_qualifiers. Use b4_get_percent_code. + * data/glr.cc, data/lalr1.cc: Likewise, and use b4_get_percent_define. + (b4_parser_class_name, b4_namespace): Define these using + b4_get_percent_define for parser_class_name and namespace. + * data/location.cc: Use b4_get_percent_define. + * data/push.c: Don't use b4_check_percent_define_variables and + b4_check_percent_code_qualifiers. Use b4_get_percent_code. + * data/yacc.c: Likewise, and don't call m4_exit in + b4_use_push_for_pull_if or m4_wrap code will never execute. + * src/muscle_tab.c, src/muscle_tab.h (muscle_grow_used_name_list): + Rename to... + (muscle_grow_user_name_list): ... this for consistency with the + terminology used in bison.m4. + * src/parse-gram.y (prologue_declaration): Prepend "percent_define_" to + %define variable names, and rename muscle used_percent_define_variables + to user_percent_define_variables. + (grammar_declaration): Rename muscle used_percent_code_qualifiers to + user_percent_code_qualifiers. + (content): Remove. + (content.opt): Replace content RHS with STRING RHS so %define "NAME" + {CODE} form is no longer accepted. + * tests/input.at (Reject bad %code qualifiers): Rename to... + (Reject unused %code qualifiers): ... this, and update test output. + (%define error): Update test output. + +2007-01-07 Joel E. Denny + + Check for unrecognized %define variables similar to checking for + unrecognized %code qualifiers. Check for redefined %define variables. + * data/bison.m4 (b4_check_for_unrecognized_names): New macro that + generalizes... + (b4_check_percent_code_qualifiers): ... this, which now wraps it. + (b4_check_percent_define_variables): New, also wraps it. + * data/glr.c: Unless glr.cc is wrapping glr.c, declare no valid %define + variables using b4_check_percent_define_variables. + * data/glr.cc, data/lalr1.cc: Declare the valid %define variables as + all those exercised in the test suite and all those listed in the + `Default values' section of c++.m4. Are there others? + * data/push.c, data/yacc.c: Declare no valid %define variables. + * src/muscle_tab.c, src/muscle_tab.h (muscle_find_const): New function, + similar to muscle_find, but it works even when the muscle stores a + const value. + (muscle_grow_used_name_list): New function for constructing the used + name list muscles that b4_check_for_unrecognized_names requires. + * src/parse-gram.y (prologue_declaration): Warn if a variable is + %define'd more than once. Define the b4_used_percent_define_variables + muscle with muscle_grow_used_name_list. + (grammar_declaration): Abbreviate %code code with + muscle_grow_used_name_list. + * tests/input.at (%define errors): New. + +2007-01-06 Joel E. Denny + + Provide warn_at, complain_at, and fatal_at function callbacks to the + skeletons, and use this for %code qualifier complaints. + * data/bison.m4 (b4_error_at): New, invoked by... + (b4_warn_at, b4_complain_at, b4_fatal_at): ... these new macros to wrap + the skeleton scanner's new @warn_at(...@), @complain_at(...@), and + @fatal_at(...@) directives. + (b4_check_percent_code_qualifiers): Rewrite to expect locations for + qualifiers in b4_used_percent_code_qualifiers and to use + b4_complain_at. + * src/location.c, src/location.h (boundary_set_from_string): New global + function. + * src/muscle_tab.c, src/muscle_tab.h (muscle_boundary_grow): New global + function. + * src/parse-gram.y (grammar_declaration): Add locations for qualifiers + to b4_used_percent_code_qualifiers. + * src/scan-skel.l (fail_for_at_directive_too_few_args): New static + function. + (AT_DIRECTIVE_ARGC_MAX): Increase for boundary arguments. + (lineno): Rename to... + (out_lineno): ... this so I don't misunderstand it again. + (SC_AT_DIRECTIVE_SKIP_WS): Don't increment out_lineno for newlines + here; these newlines are in the input but not the output file. + (SC_AT_DIRECTIVE_ARG): Likewise. Extract directive execution to... + (at_directive_perform): ... this new static function, and add handling + of new @warn_at(...@), @complain_at(...@), and @fatal_at(...@) + directives. + * tests/input.at (Reject bad %code qualifiers): Update test output with + locations and extend. + + * tests/output.at (Output file name: [, Output file name: ]): Remove + bogus comment about these tests failing. + +2007-01-06 Joel E. Denny + + Clean up b4_check_percent_code_qualifiers a little. + * data/bison.m4 (b4_check_percent_code_qualifiers): Expect qualifiers + in b4_used_percent_code_qualifiers to be double-M4-quoted. Rewrite + documentation and add examples. + * src/parse-gram.y (grammar_declaration): Double-M4-quote those + qualifiers here. + +2007-01-05 Joel E. Denny + + Don't use m4_divert since it makes m4_divert_push and m4_divert_pop + unreliable -- especially when they're hidden inside another macro. + * data/bison.m4, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, + data/c.m4: Remove m4_divert(-1). + * data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc, + data/push.c, data/yacc.c: Likewise, and replace m4_divert(0) with + m4_divert_push(0) and m4_divert_pop(0). + * src/output.c (output_skeleton): Don't add an m4_divert_push(0) and + an m4_wrap([m4_divert_pop(0)]) to the M4. Diversion -1, which is + pushed and popped by m4sugar, should be first on the stack. + + Provide warn, complain, and fatal function callbacks to the skeletons. + This provides more flexibility than m4_fatal, improves the error + message format, and captures messages for translation. Discussed + starting at + . + * data/bison.m4 (b4_error): New, invoked by... + (b4_warn, b4_complain, b4_fatal): ... these new macros to wrap the + skeleton scanner's new @warn(...@), @complain(...@), and @fatal(...@) + directives. Because these M4 macros might be called when the current + diversion is -1 or 0, m4_divert_push and m4_divert_pop is used; thus + the previous removal of uses of m4_divert, which caused trouble. + (b4_check_percent_code_qualifiers): Use b4_complain instead of + m4_fatal to report unrecognized %code qualifiers. + * data/c++-skel.m4: Use b4_complain instead of m4_fatal to report C++ + push parser requests. + * data/glr.c: Use b4_complain instead of m4_fatal to report + non-deterministic push parser requests. + Update @output usage to @output(...@) form. + * data/glr.cc, data/lalr1.cc: Use b4_fatal instead of m4_fatal to + report missing %defines. Update @output usage to @output(...@) form. + * data/location.cc, data/push.c, data/yacc.c: Update @output usage to + @output(...@) form. + * src/main.c (main): Invoke skel_scanner_free. + * src/scan-skel.h (skel_scanner_free): Prototype new function. + * src/scan-skel.l (FLEX_NO_OBSTACK): Don't define; we now need the + obstack_for_string from flex-scanner.h. + (YY_DECL): Use to declare skel_lex static. + (decode_at_digraphs): Remove; now handled in the new + SC_AT_DIRECTIVE_ARG start condition. + (fail_for_at_directive_too_many_args, fail_for_invalid_at): New static + functions. + (at_directive_name, AT_DIRECTIVE_ARGC_MAX, at_directive_argc, + at_directive_argv): New static globals. + (INITIAL): Use fail_for_invalid_at. + Don't parse `@output file_name\n' or `@basename(...@)'. Instead, + recognize the start of a generalized `@directive(...@)' form and + start... + (SC_AT_DIRECTIVE_ARG): ... this new start condition to parse the + directive args (using the new obstack_for_string), to decode the + contained @ diagraphs, and to perform the directive. It recognizes + @basename(...@), @warn(...@), @complain(...@), @fatal(...@), and + @output(...@). + (SC_AT_DIRECTIVE_SKIP_WS): New start condition started by + SC_AT_DIRECTIVE_ARG to skip whitespace after the argument delimiter, + `@,'. + (scan_skel): Initialize obstack_for_string on the first call. + (skel_scanner_free): New function to free obstack_for_string. + * tests/input.at (Reject bad %code qualifiers): Update test output. + +2007-01-04 Joel E. Denny + + Consolidate the 4 prologue alternative directives (%code, %requires, + %provides, and %code-top) into a single %code directive with an + optional qualifier field. Discussed at + . + * NEWS (2.3a+): Rewrite the existing entry for the prologue + alternatives. + * doc/bison.texinfo (Prologue Alternatives): Update. + (Decl Summary): Update to %code "requires" and %code "provides". + (Calc++ Parser): Update to %code "requires". + (Table of Symbols): Remove entries for %requires, %provides, and + %code-top. Rewrite %code entry, and add a %code "QUALIFIER" entry. + * data/bison.m4 (b4_user_provides, b4_user_requires): Remove as these + are replaced by b4_percent_code_provides and b4_percent_code_requires, + which are skeleton-specific. + (b4_check_percent_code_qualifiers): New. A skeleton can use this to + declare what %code qualifiers it supports and to complain if any other + qualifiers were used in the grammar. + * data/glr.cc: Update to use b4_user_code([b4_percent_code_requires]) + and b4_user_code([b4_percent_code_provides]) in place of + b4_user_requires and b4_user_provides. + * data/glr.c, data/lalr1.cc, data/push.c, data/yacc.c: Likewise. + Add b4_user_code([b4_percent_code_top]) and + b4_user_code([b4_percent_code]). + Invoke b4_check_percent_code_qualifiers. + * src/parse-gram.y (PERCENT_CODE_TOP, PERCENT_PROVIDES, + PERCENT_REQUIRES): Remove. + (grammar_declaration): Remove RHS's for %code-top, %provides, and + %requires. Rewrite the %code RHS as the unqualified form defining the + muscle b4_percent_code. Add another RHS for the qualified %code form, + which defines muscles of the form b4_percent_code_QUALIFIER and the + b4_used_percent_code_qualifiers muscle. + * src/scan-gram.l (PERCENT_CODE_TOP, PERCENT_PROVIDES, + PERCENT_REQUIRES): Remove. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update to use + %code "requires" and %code "provides". + * tests/input.at (Reject bad %code qualifiers): New. + +2007-01-03 Joel E. Denny + + Use the new code_props interface for destructors and printers. + * src/symtab.h (symbol, semantic_type): Remove destructor_location and + printer_location members, and change the type of the destructor and + printer members to code_props. + (symbol_destructor_set, symbol_destructor_get, symbol_printer_set, + symbol_printer_get, semantic_type_destructor_set, + semantic_type_printer_set, default_tagged_destructor_set, + default_tagless_destructor_set, default_tagged_printer_set, + default_tagless_printer_set): Use code_props in arguments and return + types in place of char const * and location. + (symbol_destructor_location_get, symbol_printer_location_get): Remove + since the locations are now contained in the return of + symbol_destructor_get and symbol_printer_get. + * src/output.c (symbol_destructors_output, symbol_printers_output): + Replace with... + (symbol_code_props_output): ... this to eliminate duplicate code. + (output_skeleton): Update to use symbol_code_props_output. + * src/reader.c (symbol_should_be_used): Update use of + symbol_destructor_get. + * src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set): + Update uses of the various _destructor_set and _printer_set functions. + * src/symtab.c: (default_tagged_destructor_location, + default_tagless_destructor_location, default_tagged_printer_location, + default_tagless_printer_location): Remove since we... + (default_tagged_destructor, default_tagless_destructor, + default_tagged_printer, default_tagless_printer): ... change the type + of these to code_props. + (symbol_new, semantic_type_new, symbol_destructor_set, + semantic_type_destructor_set, symbol_destructor_get, + symbol_printer_set, semantic_type_printer_set, symbol_printer_get, + symbol_check_alias_consistency, default_tagged_destructor_set, + default_tagless_destructor_set, default_tagged_printer_set, + default_tagless_printer_set): Update. + (symbol_destructor_location_get, symbol_printer_location_get): Remove. + (SYMBOL_CODE_PRINT): New similar to SYMBOL_ATTR_PRINT but for + code_props members. + (symbol_print): Use SYMBOL_CODE_PRINT. + +2007-01-03 Joel E. Denny + + Use the new code_props interface for rule actions. + * src/symlist.h (symbol_list): Replace action, action_location, and + used members with a code_props action_props member. + * src/reader.c (symbol_should_be_used, grammar_rule_check, + grammar_midrule_action, grammar_current_rule_merge_set, + grammar_current_rule_symbol_append, packgram): Update. + * src/scan-code.h (translate_rule_action): Remove, no longer used. + * src/scan-code.l (handle_action_dollar): Update. + (translate_rule_action): Remove, no longer used. + * src/symlist.c (symbol_list_sym_new, symbol_list_syms_print): Update. + +2007-01-02 Joel E. Denny + + Use the new code_props interface in parse-gram.y. + * src/parse-gram.y (prologue_declaration, braceless, epilogue.opt): + Update all uses of translate_* functions to use the new code_props + interface and to use gram_scanner_last_string_free and + code_scanner_last_string_free where possible. + (grammar_declaration): symbol_list_destructor_set and + symbol_list_printer_set now perform the translation, so don't do it + here. Use gram_scanner_last_string_free where possible. + * src/scan-code.h, src/scan-code.l (translate_symbol_action, + translate_code): Remove, no longer used. + * src/symlist.h, src/symlist.c (symbol_list_destructor_set, + symbol_list_printer_set): Perform code translation here rather than + depending on the caller to do so. + + * src/symlist.h (struct symbol_list): Correct some documentation typos. + * src/scan-gram.h (gram_last_string): Remove declaration. + * src/scan-gram.l (last_string): Declare it static. + +2007-01-02 Joel E. Denny + + Encapsulate code properties and related functionality for the various + destructors, printers, and actions into a code_props structure and + interface. This patch merely implements code_props in scan-code.h and + scan-code.l. Future patches will rewrite other modules to use it. + Discussed starting at + . + * src/location.h (EMPTY_LOCATION_INIT): Define so that it's easier to + consistently initialize const structs that have an empty location + field. + * src/location.c (empty_location): Initialize with EMPTY_LOCATION_INIT + to ensure consistency. + * src/scan-code.h (code_props): New structure. + (code_props_none_init, CODE_PROPS_NONE_INIT, code_props_none): New + function, macro, and const global variable for initializing a + code_props with no code. + (code_props_plain_init, code_props_symbol_action_init, + code_props_rule_action_init, code_props_translate_code): The rest of + the new code_props functional interface. Among other things, the init + functions set the code_props kind field so that + code_props_translate_code will know whether to behave like + translate_symbol_action, translate_rule_action, or translate_code. + These old translate functions must remain until all other modules are + updated to use the new code_props interface. + (code_scanner_last_string_free): New function similar to + gram_scanner_last_string_free. + (code_scanner_free): Add documentation. + * src/scan-code.l: Implement the new interface. + (code_lex): Make it static, add a code_props* argument, and remove the + rule argument. + (last_string): New static global similar to the one in scan-gram.l. + (SC_RULE_ACTION): Update to use the code_props* argument to code_lex + instead of rule. + (SC_SYMBOL_ACTION): For $$, set the is_value_used member of the + code_props since Bison may one day use this information for destructors + and printers. + (<*><>): Use STRING_FINISH so that last_string is set. + (handle_action_dollar): Use symbol_list_n_get and set used flag + directly since symbol_list_n_used_set is removed. + (translate_action): Add a code_props* argument and remove the rule, + action, and location arguments. Pass the code_props* on to code_lex. + (translate_rule_action, translate_symbol_action, translate_code): + Rewrite as wrappers around the new code_props interface. + * src/symlist.h, src/symlist.c (symbol_list_n_used_set): Remove since + it would eventually need to break the encapsulation of code_props. + +2007-01-01 Joel E. Denny + + * etc/.cvsignore: New. + +2007-01-01 Joel E. Denny + + Add maintainer-push-check to run maintainer-check using push parsing in + place of pull parsing where available. + * Makefile.am (maintainer-push-check): New. + * data/bison.m4 (b4_use_push_for_pull_if): New. + * data/push.c: Redefine b4_push_if and b4_use_push_for_pull_if + appropriately based on their existing values. + (yypush_parse): Don't print push-parser-specific diagnostics if push + parsing is being used in place of pull parsing. + * data/yacc.c: If push parsing should replace pull parsing, redirect to + push.c. + * src/output.c (prepare): Check BISON_USE_PUSH_FOR_PULL environment + variable, and insert b4_use_push_for_pull_flag into muscles. + * tests/Makefile.am (maintainer-push-check): New. + +2006-12-31 Joel E. Denny + + * data/push.c (yypush_parse): Set yynew = 1 at the end of a parse + (whether successful or failed) so that yypush_parse can be invoked + again to start a new parse using the same yypstate. + * tests/torture.at (AT_DATA_STACK_TORTURE): For push mode, extend to + check multiple yypull_parse invocations on the same yypstate. For pull + mode, extend to check multiple yyparse invocations. + (Exploding the Stack Size with Alloca): Extend to try with + %push-pull-parser. + (Exploding the Stack Size with Malloc): Likewise. + + * tests/calc.at (Simple LALR Calculator): Don't specify + %skeleton "push.c" since %push-pull-parser implies that now. + * tests/headers.at (export YYLTYPE): Don't check for the push + declarations. Otherwise, this test case can't be used to see if push + mode can truly emulate pull mode. + * tests/input.at (Torturing the Scanner): Likewise. + * tests/local.at (AT_YACC_OR_PUSH_IF, AT_PUSH_IF): Remove. + (AT_YYERROR_SEES_LOC_IF): Rather than AT_YACC_OR_PUSH_IF, use + AT_YACC_IF, which now includes the case of push mode since %skeleton + need not be used for push mode. This will be more intuitive once + push.c is renamed to yacc.c. + +2006-12-31 Joel E. Denny + + For push mode, convert yyparse from a macro to a function, invoke yylex + instead of passing a yylexp argument to yypull_parse, and don't + generate yypull_parse or yyparse unless %push-pull-parser is declared. + Discussed starting at + . + * data/bison.m4 (b4_pull_if): New. + * data/c.m4 (b4_identification): Define YYPULL similar to YYPUSH. + * data/push.c: Improve M4 quoting a little. + (b4_generate_macro_args, b4_parenthesize): Remove. + (yyparse): If there's a b4_prefix, #define this to b4_prefix[parse] + any time a pull parser is requested. + Don't #define this as a wrapper around yypull_parse. Instead, when + both push and pull are requested, make it a function that does that + same thing. + (yypull_parse): If there's a b4_prefix, #define this to + b4_prefix[pull_parse] when both push and pull are requested. + Don't define this as a function unless both push and pull are + requested. + Remove the yylexp argument and hard-code yylex invocation instead. + * etc/bench.pl.in (bench_grammar): Use %push-pull-parser instead of + %push-parser. + * src/getargs.c (pull_parser): New global initialized to true. + * getargs.h (pull_parser): extern it. + * src/output.c (prepare): Insert pull_flag muscle. + * src/parse-gram.y (PERCENT_PUSH_PULL_PARSER): New token. + (prologue_declaration): Set both push_parser and pull_parser = true for + %push-pull-parser. Set push_parser = true and pull_parser = false for + %push-parser. + * src/scan-gram.l: Don't accept %push_parser as an alternative to + %push-parser since there's no backward-compatibility concern here. + Scan %push-pull-parser. + * tests/calc.at (Simple LALR(1) Calculator): Use %push-pull-parser + instead of %push-parser. + * tests/headers.at (export YYLTYPE): Make yylex static, and don't + prototype it in the module that calls yyparse. + * tests/input.at (Torturing the Scanner): Likewise. + * tests/local.at (AT_PUSH_IF): Check for %push-pull-parser as well. + +2006-12-26 Joel E. Denny + + Update etc/bench.pl. Optimize push mode a little (the yyn change + deserves most of the credit). + * Makefile.am (SUBDIRS): Add etc subdirectory. + * configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile. + * data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult, + yytoken, yyval, and yyloc declarations to... + (yyparse or yypush_parse): ... here to improve performance. For + yypush_parse invocations after the first, be sure to assign yyn its old + value again. + (yypstate_new): Don't bother initializing the yyresult field since the + initial value isn't used. + (yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list, + remove the #define that, in push mode, set it to yyps->NAME. + * etc/Makefile.am: New. + * etc/bench.pl: Remove and build it instead from... + * etc/bench.pl.in: ... this new file. Use @abs_top_builddir@ to invoke + "tests/bison" from the build directory by default rather than just + invoking "bison" from $PATH. + (calc_grammar): Update push parser code: don't declare yylval globally, + don't define yyparse_wrapper, and don't #define yyparse. + (bench_grammar): Update to check all working combinations of yacc.c, + push.c, impure, pure, pull, and push. + +2006-12-25 Joel E. Denny + + For push mode, add pull wrappers around yypush_parse. + * data/push.c: (b4_generate_macro_args, b4_parenthesize): New macros. + (yypull_parse): New function wrapping yypush_parse. + (yyparse): New #define wrapping yypull_parse. + * tests/calc.at (_AT_DATA_CALC_Y): Call yyparse even when %push-parser + is declared. + * tests/headers.at (export YYLTYPE): Make yylex global. For push mode, + prototype yylex in the module that calls yyparse, and don't prototype + yyparse there. Otherwise, the yyparse expansion won't compile. + * tests/input.at (Torturing the Scanner): Likewise. + +2006-12-25 Joel E. Denny + + Enable push parsers to operate in impure mode. Thus, %push-parser no + longer implies %pure-parser. The point of this change is to move + towards being able to test the push parser code by running the entire + test suite as if %push-parser had been declared. + * data/push.c (yypush_parse): For impure mode, remove the + yypushed_char, yypushed_val, and yypushed_loc arguments. + Instead, declare these as local variables initialized to the global + yychar, yylval, and yylloc. + For the first yypush_parse invocation only, restore the initial values + of these global variables when it's time to read a token since they + have been overwritten. + * src/parse-gram.y (prologue_declaration): Don't set pure_parser for + %push-parser. + * tests/calc.at (Simple LALR(1) Calculator): Always declare + %pure-parser along with %push-parser since this test case was designed + for pure push parsers. + * tests/local.at (AT_PURE_OR_PUSH_IF): Remove unused. + (AT_YACC_OR_PUSH_IF): New. + (AT_YYERROR_SEES_LOC_IF): Fix enough that the test suite passes, but + add a note that it's still wrong for some cases (as it has been for a + while). + (AT_PURE_LEX_IF): Use AT_PURE_IF instead of AT_PURE_OR_PUSH_IF since + %push-parser no longer implies %pure-parser. + +2006-12-20 Joel E. Denny + + Remove some unnecessary differences between the pull parser code and + the push parser code. This patch enables yynerrs in push mode. + * data/push.c: Reformat M4 a little. + (b4_yyerror_range): Remove and convert all uses to just yyerror_range. + (b4_declare_scanner_communication_variables): Don't omit yynerrs just + because push mode is on. Instead, if pure mode is on, move yynerrs + to... + (b4_declare_parser_state_variables): ... here. + (yynerrs, yyerror_range): For push mode, #define each NAME in this list + to yyps->NAME so it can be used in yypush_parse. + (yypush_parse): Don't omit uses of yynerrs in push mode. + +2006-12-20 Joel E. Denny + + Fix bug such that the first pushed token's value and location are + sometimes overwritten (sometimes by %initial-action) before being used. + * data/push.c (yypush_parse): Rename arguments yynchar, yynlval, and + yynlloc to yypushed_char, yypushed_val, and yypushed_loc for clarity. + For the first yypush_parse invocation, initialize yychar to YYEMPTY to + more closely mimic the pull parser logic. + Don't copy the pushed token to yychar, yylval, and yylloc until it's + time to read a token, which is after any initialization of yylval and + yylloc. + (gottoken): Rename label to... + (yyread_pushed_token): ... for clarity and to avoid infringing on the + user namespace. + +2006-12-20 Joel E. Denny + + Rearrange initialization of the parser state variables so that the + skeleton doesn't have to have a copy for pull mode and another for push + mode. This patch also fixes at least a bug such that yylloc was not + initialized (with b4_location_initial_line and + b4_location_initial_column) upon calling yypush_parse. However, that + initialization now overwrites the first token's location; + %initial-action assigning @$ already did the same thing, and both bugs + will be fixed in a later patch. + * data/push.c (b4_yyssa): Remove and convert all uses to just yyssa. + (b4_declare_parser_state_variables): Remove initialization of yytoken, + yyss, yyvs, yyls, and yystacksize. + (yypstate_new): Remove initialization of some yypstate fields: yystate, + yyerrstatus, yytoken, yyss, yyvs, yyls, yystacksize, yyssp, yyvsp, and + yylsp. + (yyssa, yyvsa, yylsa): For push mode, #define each NAME in this list to + yyps->NAME so it can be used in yypush_parse. + (yyparse or yypush_parse): For yypush_parse, don't print the + "Starting parse" diagnostic for invocations after the first. + Add initialization of yytoken, yyss, yyvs, yyls, and yystacksize; for + yypush_parse, only do it for the first invocation. + Allow yystate, yyerrstatus, yyssp, yyvsp, yylsp, and yylloc + initialization to occur in yypush_parse but only on the first + invocation. + +2006-12-19 Joel E. Denny + + * data/push.c: Add CPP guards around push parser declarations in both + the header and the code file. + In the code file, move the push parser declarations to the same place + they appear in the header file. + Clean up the M4 some, especially the inconsistent underquoting in + some b4_c_function_def and b4_c_function_decl uses. + +2006-12-19 Joel E. Denny + + Encapsulate the push parser state variables into an M4 macro so the + push skeleton doesn't have to list them again for pull mode's yyparse. + For push mode, remove yypush_parse's local equivalents of these + variables to eliminate unnecessary copying between the two sets at + run-time. This patch also fixes at least a bug related to multiple + %initial-action invocations in push mode. + * data/push.c (b4_declare_parser_variables): Rename to... + (b4_declare_scanner_communication_variables): ... this for clarity and + update both uses. + (b4_declare_yyparse_variables): Remove and move its contents to the one + spot where it was invoked. + (b4_declare_parser_state_variables): New macro containing the parser + state variables required by push mode. + (struct yypstate): Replace all fields but yynew with + b4_declare_parser_state_variables. + (yystate, yyn, yyresult, yyerrstatus, yytoken, yyss, yyssp, yyvs, + yyvsp, yyls, yylsp, yystacksize, yyval, yyloc): For push mode, #define + each NAME in this list to yyps->NAME so it can be used in yypush_parse. + (yyparse or yypush_parse): For yyparse in pull mode, replace local + parser state variable declarations with + b4_declare_parser_state_variables. + Don't initialize parser state variables when calling yypush_parse since + yypstate_new already does that. + Invoke the user's initial action only upon the first yypush_parse + invocation. + Remove all code that copies between the local parser state variables + and the yypstate. + +2006-12-19 Joel E. Denny + + * data/push.c (union yyalloc): Rename yyss, yyvs, and yyls fields to + prevent a name collision in a future patch where these names will + sometimes be #define'd. + (YYSTACK_RELOCATE): Add an argument to select a union yyalloc field + since it no longer has the same name as the existing argument. + (yyparse or yypush_parse): Update all uses of YYSTACK_RELOCATE. + +2006-12-19 Paolo Bonzini + and Joel E. Denny + + * doc/bison.texinfo (Decl Summary): In the %language entry, mention + that the argument is case-insensitive, and there's no `=' here. + For the %skeleton entry, mention that %language is better. + (Bison Options): Likewise for --language and --skeleton. Move the + --skeleton entry so that the `Tuning the parser' section is sorted + alphabetically on long options. + (C++ Bison Interface): Don't use the word skeleton. Don't explain the + %language directive in detail here; cross-reference the %language + documentation instead. + (Calc++ Parser): Use `%require "@value{VERSION}"' rather than + `%require "2.3b"' so that the example is always up-to-date. + (Table of Symbols): Add entries for %language and %skeleton. + * examples/extexi (normalize): Instead of replacing every %require + argument with the current Bison version, just substitute for + `@value{VERSION}'. This guarantees that we're testing what actually + appears in the documentation. + * examples/calc++/Makefile.am ($(calc_extracted)): Use `$(VERSION)' + rather than `@VERSION@'. + +2006-12-18 Paul Eggert + + * NEWS: Reword the %language news a bit, and put it earlier. + + * src/getargs.c (skeleton_arg): Last arg is now location const *. + Rewrite to simplify the logic. + (language_argmatch): Likewise. + (program_name): We now own this var. + * src/getargs.h (struct bison_language): Use char[] rather than + const char *. + + * doc/bison.texinfo (Decl Summary, Bison Options): Don't claim + Java is supported. + * src/complain.c (program_name): Remove decl; no longer needed. + * src/main.c (program_name): Remove; now belongs to getargs. + +2006-12-18 Paolo Bonzini + + * NEWS: Document %language. + + * data/Makefile.am (dist_pkgdata_DATA): Add c-skel.m4, c++-skel.m4. + + * data/c-skel.m4, data/c++-skel.m4: New files. + * data/glr.c: Complain on push parsers. + + * doc/bison.texinfo (C++ Parser Interface): Prefer %language + over %skeleton. + (Decl Summary): Document %language and %skeleton. + (Command line): Document -L. + + * examples/extexi: Rewrite %require directive. + * examples/calc++/Makefile.am: Pass VERSION to extexi. + + * src/files.c (compute_exts_from_gc): Look in language structure + for .y extension. + (compute_file_name_parts): Check whether .tab should be added. + * src/getargs.c (valid_languages, skeleton_prio, language_prio): + (language, skeleton_arg, language_argmatch): New. + (long_options): Add --language. + (getargs): Use skeleton_arg, add -L/--language. + * src/getargs.h: Include location.h. + (struct bison_language, language, skeleton_arg, language_argmatch): New. + * src/output.c (prepare): Pick default skeleton from struct language. + Don't dispatch C skeletons here. + * src/parse-gram.y (PERCENT_LANGUAGE): New. + (prologue_declaration): Add "%language" rule, use skeleton_arg. + * src/scan-gram.l ("%language"): New rule. + + * tests/calc.at: Test %skeleton and %language. + * tests/local.at (AT_SKEL_CC_IF): Look for %language. + (AT_GLR_IF): Look for %skeleton "glr.cc". + (AT_LALR1_CC_IF, AT_GLR_CC_IF): Rewrite. + (AT_YACC_IF): Reject %language. + +2006-12-18 Paul Eggert + + * src/symtab.h (struct semantic_type): Remove the tag 'semantic_type', + since it wasn't used; only the typedef name 'semantic_type' is needed. + Also, omit trailing white space. + + * bootstrap: Sync from coreutils. + (gnulib_extra_files): Add build-aux/announce.gen. + (slurp): Adjust .gitignore files like .cvsignore files. + * build-aux/announce-gen: Remove from CVS, since bootstrap + now creates this. + +2006-12-16 Joel E. Denny + + Make %push-parser imply %pure-parser. This fixes several bugs; see + . + * src/parse-gram.y (prologue_declaration): For %push-parser, also set + pure_parser = true. + * data/push.c: Don't bother testing b4_push_if when deciding whether + to expand b4_declare_parser_variables globally. + (yypush_parse): Likewise in here. + + * data/push.c (yypush_parse): Add b4_parse_param to arguments. + (yy_reduce_print): Reformat M4 for readability. + +2006-12-15 Bob Rossi + and Joel Denny + + * data/push.c (yypstate): Add typedef, and update all uses of + struct yypstate to just yypstate. + * tests/calc.at (_AT_DATA_CALC_Y): Update here as well. + +2006-12-14 Bob Rossi + + * data/push.c (yypush_parse): Declare prototype regardless of + %locations option. + +2006-12-14 Bob Rossi + + * data/push.c (yyparse): Remove the prototype and the #define when in + push-parser mode. + +2006-12-13 Bob Rossi + + * data/push.c (yypstate_init): Rename to... + (yypstate_new): ... this and use b4_c_function_def. + (yypstate_delete): New. + (yypush_parse): Change parameters yynval and yynlloc to be const. + * tests/calc.at (_AT_DATA_CALC_Y): Use new yypstate_new and + yypstate_delete functions. + +2006-12-13 Joel E. Denny + + * configure.ac (AC_PREREQ): Require Autoconf 2.61 because of our + strange test case titles. Reported by Bob Rossi. + +2006-12-13 Paul Eggert + + * TODO: Add pointer to Sylvain Schmitz's work on static detection + of potential ambiguities in GLR grammers. + +2006-12-12 Joel E. Denny + + * tests/testsuite.at (AT_CHECK): When checking if $1 starts with + `bison ', use m4_index instead of m4_substr since chopping up a string + containing M4-special characters causes problems here. + + Fix a couple of bugs related to special characters in user-specified + file names, and make it easier for skeletons to compute output file + names with the same file name prefix as Bison-computed output file + names. + * data/glr.cc, data/push.c, data/yacc.c: In @output, use + b4_parser_file_name and b4_spec_defines_file instead of + @output_parser_name@ and @output_header_name@, which are now redundant. + * data/glr.c, data/lalr1.cc: Likewise. Also, in header #include's, use + b4_parser_file_name, b4_spec_defines_file, and the new + @basename(FILENAME@) instead of @output_parser_name@ and + @output_header_name@, which inappropriately escaped the file names as + C string literals. + * src/files.c (all_but_ext): Remove static qualifier. + (compute_output_file_names): Move `free (all_but_ext)' to... + (output_file_names_free): ... here since all_but_ext is needed later. + * src/files.h (all_but_ext): Extern. + * src/muscle_tab.h (MUSCLE_INSERT_STRING_RAW): New macro that does + exactly what MUSCLE_INSERT_STRING used to do. + (MUSCLE_INSERT_STRING): Use MUSCLE_OBSTACK_SGROW so that M4-special + characters are escaped properly. + * src/output.c (prepare): Define muscle file_name_all_but_ext as + all_but_ext. + For pkgdatadir muscle, maintain previous functionality by using + MUSCLE_INSERT_STRING_RAW instead of MUSCLE_INSERT_STRING. The problem + is that b4_pkgdatadir is used inside m4_include in the skeletons, so + digraphs would never be expanded. Hopefully no one has M4-special + characters in his Bison installation path. + * src/scan-skel.l: Don't parse @output_header_name@ and + @output_parser_name@ anymore since they're now redundant. + In @output, use decode_at_digraphs. + Parse a new @basename command that invokes last_component. + (decode_at_digraphs): New. + (BASE_QPUTS): Remove unused. + * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): New macro. + (Output file name): New tests. + +2006-12-09 Joel E. Denny + + Warn about output files that are generated by the skeletons and that + conflict with other output files. + * data/glr.c: Don't generate the header file here when glr.cc does. + * src/files.c (file_names, file_names_count): New static globals. + (compute_output_file_names): Invoke output_file_name_check for files + not generated by the skeletons and remove existing checks. + (output_file_name_check): New function that warns about conflicting + output file names. + (output_file_names_free): Free file_names. + * src/files.h (output_file_name_check): Declare. + * src/scan-skel.l: Invoke output_file_name_check for files generated by + the skeletons. + * tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): New. + (Conflicting output files): New tests. + +2006-12-09 Ralf Wildenhues + + * doc/bison.texinfo: Fix a couple of typos. + +2006-12-08 Bob Rossi + + * data/push.c: (yypvarsinit, yypvars, struct yypvars, yypushparse): + Rename to... + (yypstate_init, yypstate, struct yypstate, yypush_parse): ... these and + update all uses. + (b4_yyssa, b4_yyerror_range, yypstate_init): Rename pv to yyps. + (yypush_parse): Rename yypvars argument to yyps and remove redundant + local pv. + (yypstate_init, yypush_parse): Declare in Bison-generated header file. + * tests/calc.at (_AT_DATA_CALC_Y): Use newly named functions. + +2006-12-07 Bob Rossi + and Joel Denny + + * data/push.c (yypvarsinit): Change return type from void* to struct + yypvars*. No longer cast to void* on return. + (struct yypvars): Remove yylen since it need not be remembered between + yypushparse invocations. + (yypushparse): Don't copy between yylen and pv->yylen. + +2006-12-05 Bob Rossi + + * data/push.c (yychar_set, yylval_set, yylloc_set): Delete. + (yypushparse): Add yynchar, yynlval, yynlloc parameters. + (b4_declare_parser_variables): Do not declare yynerrs for push mode. + (struct yypvars): Remove b4_declare_parser_variables. + (yypvarsinit): Remove init code for removed variables. + (global scope): Do not declare b4_declare_parser_variables if + push or pure mode. + (yypushparse): Add b4_declare_parser_variables. + Init new local variables, and remove init code for removed + yypvars variables. + (yyparse): Delete. + * tests/calc.at (_AT_DATA_CALC_Y): Call yypushparse for push mode + and yyparse for other modes. + (AT_CHECK_CALC_LALR): Added '%skeleton "push.c"' for push tests. + * tests/local.at (AT_PUSH_IF, AT_PURE_OR_PUSH_IF): Added. + (AT_YYERROR_SEES_LOC_IF): push-parser makes this false. + (AT_PURE_LEX_IF): True if pure or push parser. + +2006-12-05 Joel E. Denny + + Document Yacc prologue alternatives and default %destructor's and + %printer's as experimental. Don't mention Java yet. Discussed at + . + * NEWS (2.3a+): Say they're experimental. Remove any mention of Java. + (2.3a): Annotate this entry to say the old forms of these features were + also experimental. + * doc/bison.texinfo (Prologue Alternatives, Freeing Discarded Symbols, + Table of Symbols): Say they're experimental. Comment out any mention + of Java (we'll want this back eventually). + +2006-12-01 Joel E. Denny + + Support a file name argument to %defines. Deprecate `=' in + %file-prefix, %name-prefix, and %output. Discussed at + . + * NEWS (2.3a+): Mention. + * doc/bison.texinfo (Decl Summary, Table of Symbols): Add entry for new + form of %defines, and remove `=' from entries for %file-prefix, + %name-prefix, and %output. + * src/parse-gram.y (prologue_declaration): Implement. + * tests/calc.at (Simple LALR Calculator, Simple GLR Calculator, Simple + LALR1 C++ Calculator, Simple GLR C++ Calculator): Remove the `=' from + all but one occurrence of %name-prefix. + * tests/headers.at (export YYLTYPE): Remove the `=' from %name-prefix. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Likewise. + * tests/output.at (AT_CHECK_OUTPUT): Remove the `=' from all but one + occurrence of each of %file-prefix and %output. Add check for %defines + with argument. + * tests/reduce.at (Useless Terminals, Useless Nonterminals, + Useless Rules, Reduced Automaton, Underivable Rules, Empty Language): + Remove the `=' from %output. + +2006-11-21 Joel E. Denny + + Don't escape $ in test case titles since Autoconf 2.61 now does that + correctly. + * tests/actions.at (Default %printer and %destructor are not for error + or $undefined): Here. + (Default %printer and %destructor are not for $accept): Here. + * tests/input.at (Invalid $n and @n): Here. + +2006-11-20 Joel E. Denny + + Rename to <>. Discussed starting at + . + * NEWS (2.3a+): Update. + * doc/bison.texinfo (Freeing Discarded Symbols, Table of Symbols): + Update. + * src/parse-gram.y (TYPE_TAG_NONE, generic_symlist_item): Implement. + * src/scan-gram.l (INITIAL): Implement. + * src/symlist.c (symbol_list_default_tagless_new): Update comment. + * src/symlist.h (symbol_list, symbol_list_default_tagless_new): Update + comment. + * tests/actions.at (Default tagless %printer and %destructor, + Default tagged and per-type %printer and %destructor, + Default %printer and %destructor are not for error or $undefined, + Default %printer and %destructor are not for $accept, + Default %printer and %destructor for mid-rule values): Update. + * tests/input.at (Default %printer and %destructor redeclared, + Unused values with default %destructor): Update. + +2006-11-17 Joel E. Denny + + Don't let %prec take a nonterminal. + * src/reader.c (grammar_current_rule_prec_set): Make the %prec symbol a + token. + * tests/input.at (%prec takes a token): New test checking that %prec + won't take a nonterminal. + +2006-11-10 Joel E. Denny + + * tests/testsuite.at (AT_CHECK): Don't miss an exit value of 0 because + it was double-quoted. + * src/Makefile.am (YACC): Use --warnings=all,error so that Bison's own + grammar is maintained with Bison's highest standards. + * src/getargs.c: Fix some typos in Doxygen comments. + +2006-11-10 Joel E. Denny + + Fix memory leaks in scanners generated by at least Flex 2.5.9 and + later. Reported by Paul Eggert in + . + * src/flex-scanner.h (yylex_destroy): Define for Flex before 2.5.9. + * src/scan-code.l (translate_action): Don't bother invoking + yy_delete_buffer (YY_CURRENT_BUFFER) before creating the first buffer. + (code_scanner_free): Instead of invoking + yy_delete_buffer (YY_CURRENT_BUFFER) directly, invoke yylex_destroy, + which frees more. + * src/scan-gram.l (gram_scanner_free): Likewise. + * src/scan-skel.l (scan_skel): Likewise. + +2006-11-09 Joel E. Denny + + * src/files.c (tr): Change return type to void. + * src/muscle_tab.c (muscle_insert): Free storage in case muscle_grow + has been called previously for the same key. + (muscle_find): Return storage instead of value so that + --enable-gcc-warnings doesn't produce warnings that the return discards + const. aver that the value and storage are the same since storage + could potentially be NULL when value is not. + * tests/testsuite.at (AT_CHECK): Treat an unspecified exit value the + same as 0. + +2006-11-08 Paul Eggert + + * bootstrap.conf (excluded_files): Exclude m4/codeset.m4 (undoing + the earlier change today), m4/intl.m4, m4/intldir.m4. This gives + us a slightly cleaner distribution, and also works. + * m4/.cvsignore: Add inline.m4, wint_t.m4 to accommodate recent + gnulib changes. + +2006-11-08 Joel E. Denny + and Paul Eggert + + Don't let Bison leak memory except when it complains. + * src/files.h (parser_file_name, spec_verbose_file, spec_graph_file): + (spec_defines_file, dir_prefix): Now char *, not const char *, + since they are freed. + * src/files.c: Likewise. + (all_but_ext, all_but_tab_ext, src_extension, header_extension): + Likewise. + (tr): Now operates in-place. All uses changed. + (compute_exts_from_gf, compute_exts_from_src): Don't leak temporary + values. + (compute_file_name_parts, compute_output_file_names): Don't store + read-only data in variables that will be freed. + (compute_output_file_names): Free all_but_ext, all_but_tab_ext, + src_extension, and header_extension. + (output_file_names_free): New public function to free + spec_verbose_file, spec_graph_file, spec_defines_file, + parser_file_name, and dir_prefix. + * src/getargs.c (getargs): Don't store read-only data in variables that + will be freed. + * src/main.c (main): Invoke output_file_names_free, code_scanner_free + (which previously existed but was unused), and quotearg_free. + * src/muscle_tab.h (muscle_insert): value arg is now a `char const *'. + * src/muscle_tab.c: Likewise. + (muscle_entry): Make the value char const *, + and add a new storage member that is char * and can be freed. + (muscle_entry_free): New private function. + (muscle_init): Use it instead of free. + (muscle_insert, muscle_grow): Update and use new storage member. + (muscle_code_grow): Free the string passed to muscle_grow + since it's not needed anymore. + * src/parse-gram.y (%union): Make `chars' member a `char const *', and + add a new `char *code' member. + ("{...}"): Declare semantic type as code. + * src/scan-code.h (translate_rule_action): + (translate_symbol_action, translate_code, translate_action): Return + `char const *' rather than `char *' since external code should not free + these strings. + * src/scan-code.l: Likewise. + * src/scan-gram.l (): Use val->code for BRACED_CODE, + which is "{...}" in the parser. + * tests/Makefile.am (maintainer-check-valgrind): Set + VALGRIND_OPTS='--leak-check=full --show-reacheable=yes' before invoking + Valgrind. + * tests/calc.at (_AT_DATA_CALC_Y): fclose the FILE* so Valgrind doesn't + complain. + * tests/testsuite.at (AT_CHECK): Redefine so that running Bison and + expecting a non-zero exit status sets --leak-check=summary and + --show-reachable=no for Valgrind. Bison unabashedly leaks memory in + this case, and we don't want to hear about it. + +2006-11-08 Paul Eggert + + * bootstrap (runtime-po/Makevars): Derive from po/Makevars + instead of from the template, to simplify configuration a bit. + * bootstrap.conf (excluded_files): Don't exclude m4/codeset.m4 + and m4/wint_t.m4, as they are needed with the latest gnulib. + +2006-10-31 Joel E. Denny + + Disable unset/unused mid-rule value warnings by default, and recognize + --warnings=midrule-values to enable them. Discussed starting at + . + * NEWS (2.3a+): Mention. + * src/getargs.c, src/getargs.h (warnings_args, warnings_types, enum + warnings): Add entry for midrule-values subargument. + * src/reader.c (symbol_should_be_used): Don't return true just because + the value is a set/used mid-rule value unless + --warnings=midrule-values was specified. + * tests/input.at (Unused values, Unused values before symbol + declarations): Run tests with and without --warnings=midrule-values. + + * src/reader.c (check_and_convert_grammar): Use symbol_list_free rather + than LIST_FREE directly. + +2006-10-31 Joel E. Denny + + Finish implementing --warnings=error, which should not be implied by + --warnings=all (or by its synonyms -W and --warnings without + subarguments). + * src/complain.c (set_warning_issued): New function to report that + warnings are being treated as errors and to record an error if so. + Invoke... + (warn_at, warn): ... here. + * src/getargs.c (warnings_args, warnings_types): Reorder so that + "error - warnings are errors" does not appear above "all - all of the + above". + (getargs): For -W and --warnings without subarguments, don't let + FLAGS_ARGMATCH set warnings_error in warnings_flag. + * src/getargs.h (enum warnings): Unset warnings_error in warnings_all. + +2006-10-31 Joel E. Denny + + * src/getargs.c (flags_argmatch): Don't cause segmentation fault for + empty subargument list. For example: `bison --warnings= parser.y'. + +2006-10-21 Joel E. Denny + + * data/push.c, data/yacc.c: Make sure there's a newline at the end of + the parser header file so that gcc doesn't warn. + +2006-10-21 Joel E. Denny + + Split the default %destructor/%printer into two kinds: <*> and . + Discussed starting at + . + * NEWS (2.3a+): Mention. + * doc/bison.texinfo (Freeing Discarded Symbols): Document this and the + previous change today related to mid-rules. + (Table of Symbols): Remove %symbol-default and add <*> and . + * src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): Remove. + (TYPE_TAG_ANY): Add as <*>. + (TYPE_TAG_NONE): Add as . + (generic_symlist_item): Remove RHS for %symbol-default and add RHS's + for <*> and . + * src/scan-gram.l (PERCENT_SYMBOL_DEFAULT): Remove. + (TYPE_TAG_ANY, TYPE_TAG_NONE): Add. + * src/symlist.c (symbol_list_default_new): Split into tagged and + tagless versions. + (symbol_list_destructor_set, symbol_list_printer_set): Split + SYMLIST_DEFAULT case into SYMLIST_DEFAULT_TAGGED and + SYMLIST_DEFAULT_TAGLESS. + * src/symlist.h: Update symbol_list_default*_new prototypes. + (symbol_list.content_type): Split enum value SYMLIST_DEFAULT into + SYMLIST_DEFAULT_TAGGED and SYMLIST_DEFAULT_TAGLESS. + * src/symtab.c (default_destructor, default_destructor_location, + default_printer, default_printer_location): Split each into tagged and + tagless versions. + (symbol_destructor_get, symbol_destructor_location_get, + symbol_printer_get, symbol_printer_location_get): Implement tagged + default and tagless default cases. + (default_destructor_set, default_printer_set): Split each into tagged + and tagless versions. + * src/symtab.h: Update prototypes. + * tests/actions.at (Default %printer and %destructor): Rename to... + (Default tagless %printer and %destructor): ... this, and extend. + (Per-type %printer and %destructor): Rename to... + (Default tagged and per-type %printer and %destructor): ... this, and + extend. + (Default %printer and %destructor for user-defined end token): Extend. + (Default %printer and %destructor are not for error or $undefined): + Update. + (Default %printer and %destructor are not for $accept): Update. + (Default %printer and %destructor for mid-rule values): Extend. + * tests/input.at (Default %printer and %destructor redeclared): Extend. + (Unused values with default %destructor): Extend. + +2006-10-21 Joel E. Denny + + Don't apply the default %destructor/%printer to an unreferenced midrule + value. Mentioned at + . + * src/symtab.c (dummy_symbol_get): Name all dummy symbols initially + like $@n instead of just @n so that the default %destructor/%printer + logic doesn't see them as user-defined symbols. + (symbol_is_dummy): Check for both forms of the name. + * src/reader.c (packgram): Remove the `$' from each midrule symbol + name for which the midrule value is referenced in any action. + * tests/actions.at (Default %printer and %destructor for mid-rule + values): New test. + * tests/regression.at (Rule Line Numbers, Web2c Report): Update output + for change to dummy symbol names. + +2006-10-20 Joel E. Denny + + Warn about unset midrule $$ if the corresponding $n is used. + * src/reader.c (symbol_should_be_used): Check midrule parent rule for + $n usage. + (packgram): Before invoking grammar_rule_check on any rule, make sure + all actions have already been scanned in order to set `used' flags. + Otherwise, checking that a midrule's $$ is set will not always work + properly because the midrule check must forward-reference the midrule's + parent rule. + * tests/input.at (AT_CHECK_UNUSED_VALUES): Extend to check the new + warning. + +2006-10-20 Joel E. Denny + + More improvements to the documentation of the prologue alternatives: + * NEWS (2.3a+): Mention the new `Prologue Alternatives' section in the + Bison manual. + * doc/bison.texinfo (Prologue Alternatives): Correct some errors. Add + some text to clarify the relative importance of the new directives and + to show how these directives may be viewed as code labels. + +2006-10-16 Joel E. Denny + + Similar to the recently removed %before-header, add %code-top as the + alternative to the pre-prologue. Mentioned at + . + Also, let the prologue alternatives appear in the grammar section. + * src/parse-gram.y (PERCENT_CODE_TOP): New token. + (prologue_declaration): Move the existing prologue alternatives to... + (grammar_declaration): ... here and add %code-top. + * src/scan-gram.l (PERCENT_CODE_TOP): New token. + + Clean up and extend documentation for the prologue alternatives. + * NEWS (2.3a+): Describe prologue alternatives. + * doc/bison.texinfo (Prologue): Move discussion of prologue + alternatives to... + (Prologue Alternatives): ... this new section, and extend it to discuss + all 4 directives in detail. + (Table of Symbols): Clean up discussion of prologue alternatives and + add %code-top. + +2006-10-16 Juan Manuel Guerrero + + DJGPP specific issues. + + * djgpp/config.bat: config.hin has been moved to lib. Adjust + config.bat accordingly. + * djgpp/config.sed: Adjust config.sed for the use of autoconf 2.60. + * djgpp/config.site: Likewise. + +2006-10-16 Paolo Bonzini + + Replace %*-header with %provides, %requires, %code. See discussion at + http://lists.gnu.org/archive/html/bison-patches/2006-10/msg00002.html + + * data/bison.m4 (b4_user_requires, b4_user_provides): New. + (b4_user_start_header): Remove. + * data/glr.c: Use new macros instead of b4_*start_header + and b4_*end_header. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/push.c: Likewise. + * data/yacc.c: Likewise. + + * doc/bison.texinfo: Remove %before-header, rename + %{start,end,after}-header to %requires, %provides, %code. + + * src/parse-gram.y: Likewise (also rename token names accordingly). + * src/scan-gram.l: Likewise. + * tests/actions.at: Likewise. + +2006-10-14 Paul Eggert + + * lib/Makefile.am (AM_CFLAGS): Remove $(WERROR_CFLAGS). + Problem reported by Joel E. Denny. + +2006-10-14 Jim Meyering + + (Sync from coreutils.) + Work also when the working directory (with e.g. coreutils sources) + is version controlled with git, rather than CVS. + * bootstrap (CVS_only_file): Test for the existence of README-cvs, + rather than CVS. + In messages and comments, say e.g., "checked-out sources", + rather than "CVS sources". + (version_controlled_file): New function. Work for git as well as + for CVS. Don't use grep's -q option. + (slurp): Call it here, in place of CVS-specific code. + +2006-10-14 Joel E. Denny + + Fix testsuite for ./configure --enable-gcc-warnings: + * configure.ac (gcc-warnings): Move -Wall before -Wno-sign-compare. + Otherwise, gcc 4.1.0 (at least) warns about sign comparisons in + __AT_CHECK_PRINTER_AND_DESTRUCTOR in tests/actions.at. + * test/input.at (Torturing the Scanner): #include for abort. + * test/regression.at (Diagnostic that expects two alternatives): + Likewise. + +2006-10-12 Paul Eggert + + * bootstrap.conf (gnulib_modules): Add config-h. + * djgpp/subpipe.c: Include unconditionally; don't + worry about HAVE_CONFIG_H. + * lib/abitset.c: Likewise. + * lib/bitset.c: Likewise. + * lib/bitset_stats.c: Likewise. + * lib/bitsetv-print.c: Likewise. + * lib/bitsetv.c: Likewise. + * lib/ebitset.c: Likewise. + * lib/get-errno.c: Likewise. + * lib/lbitset.c: Likewise. + * lib/subpipe.c: Likewise. + * lib/timevar.c: Likewise. + * lib/vbitset.c: Likewise. + * lib/bitset.c: Include "bitset.h" first, to test interface. + * lib/bitset_stats.c: Include "bitset_stats.h" first. + * lib/bitsetv-print.c: Include "bitsetv-print.h" first. + * lib/bitsetv.c: Include "bitsetv.h" first. + * lib/get-errno.c: Include "get-errno.h" first. + * m4/.cvsignore: Add config-h.m4. + * tests/actions.at (Default %printer and %destructor for ...): + Adjust expected line numbers in output to reflect removal of #if + HAVE_CONFIG_H lines. + * tests/glr-regression.at (Missed %merge type warnings when ...): + Likewise. + * tests/regression.at (Braced code in declaration in rules section): + Likewise. + * tests/atlocal.in (CPPFLAGS): Don't define HAVE_CONFIG_H. + * tests/local.at (AT_DATA_GRAMMAR_PROLOGUE): + Include unconditionally. + + * bootstrap: Sync from coreutils, as follows: + + 2006-10-11 Paul Eggert + + * bootstrap (symlink_to_gnulib): Fix bug: the dot_dots shell + variable was sometimes used without being initialized. This + messed up the installation of the INSTALL file in some cases. + + 2006-10-09 Paul Eggert + + * bootstrap (usage, main program, symlink_to_gnulib): Add option + --copy. Inspired by a suggestion from Bruno Haible. + + 2006-10-03 Jim Meyering + + * bootstrap: Undo last change to this file, since now gnulib-tool + sticks with the automake default in generating dependencies. + +2006-10-12 Paul Eggert + + * configure.ac: Use AC_PROG_CC_STDC; this is more modern than + the old AC_PROG_CC / AM_PROG_CC_STDC combination. + + * doc/bison.1: Add copyright notice. + + * data/glr.c: Don't include ; not used. + + * NEWS: The -g and --graph options now output graphs in Graphviz + DOT format, not VCG format. + * doc/bison.1: Likewise. + * doc/bison.texinfo (Understanding, Bison Options): Likewise. + * THANKS: Add Satya Kiran Popuri, who proposed the initial version + of this change in + . + * TODO: Remove Graphviz entry. + * src/Makefile.am (bison_SOURCES): Add graphviz.c and graphviz.h; + remove vcg.c, vcg.h, vcg_defaults.h. + * src/vcg.c, src/vcg.h, src/vcg_defaults.h: Remove. + * src/graphviz.c, src/graphviz.h: New files. + * src/files.c (compute_output_file_names): Output .dot, not .vcg. + * src/files.h: Make comment more generic. + * src/main.c (main): Likewise. + * src/print_graph.h: Likewise. + * src/getargs.c (usage): Make usage description more generic. + * src/print_graph.c: Include graphviz.h rather than vcg.h. + (static_graph, fgraph): Remove. All uses changed to pass + arguments instead of sharing a static var. + (print_core, print_actions, print_state, print_graph): + Output graphviz format rather than VCG format. + * tests/.cvsignore: Remove *.vcg; add *.dot. + * tests/output.at: Expect *.dot files, not *.vcg files. + + * data/Makefile.am (dist_pkgdata_DATA): Add bison.m4; this + accommodates the 2006-10-08 change. + +2006-10-11 Bob Rossi + + * data/push.c (yypushparse, yypvarsinit, yypvars): Wrap in b4_push_if. + (b4_yyssa, b4_yyerror_range): New macros. + (struct yypvars): Remove yyssa_ptr and yyerror_range_ptr fields. + (yypvarsinit): Remove init of removed fields. + (yypushparse): Remove use of removed fields; use new macros instead. + +2006-10-11 Paul Eggert + + * data/push.c (yypushparse): Fix memory leak if yymsg is malloced + in a push parser. Reindent slightly to match yacc.c better. + +2006-10-11 Bob Rossi + + * data/push.c (struct yypvars): Remove yymsgbuf, yymsgbuf_ptr, yymsg, + yymsg_alloc fields. + (yypvarsinit, yypushparse): Remove init of removed fields. + (yypushparse): Use yymsgbuf instead of yymsgbuf_ptr. + +2006-10-09 Paul Eggert + + * THANKS: Add Paolo Bonzini and Bob Rossi. + +2006-10-08 Paolo Bonzini + + * data/c.m4 (b4_copyright, b4_epilogue, b4_location_initial_column, + b4_location_initial_line, p4_parse_param, b4_ints_in, b4_flag_if, + b4_define_flag_if and uses, b4_basename, b4_syncline, b4_user_code, + b4_define_user_cde and uses): Remove. + (b4_comment, b4_prefix, b4_sync_start): New. + * data/bison.m4: New file, with most of the content removed from c.m4. + * src/muscle_tab.h: Use "do {...} while(0)" throughout. + * src/output.c (output_skeleton): Pass bison.m4. + (prepare): Pass glr_flag and nondeterministic_flag. Pass prefix + only if specified. + +2006-10-05 Paul Eggert + + Fix test failure reported by Tom Lane in + + and try to make such failures easier to catch in the future. + * data/glr.c (YYTRANSLATE): Don't check for nonpositive arg; + that's now the caller's responsibility. + (yyprocessOneStack, yyrecoverSyntaxError, yyparse): + Set yychar = YYEOF if it's negative. + * tests/actions.at (yylex): Abort if asked to read past EOF. + * tests/conflicts.at (yylex): Likewise. + * tests/cxx-type.at (yylex): Likewise. + * tests/glr-regression.at (yylex): Likewise. + * tests/input.at (yylex): Likewise. + * tests/regression.at (yylex): Likewise. + * tests/torture.at (yylex): Likewise. + +2006-10-01 Paul Eggert + + Fix problems with translating English-language diagnostics. + * bootstrap: Fix bug introduced in recent bootstrap changes, with + respect to bison-runtime pot generation. The YY_ stuff + wasn't being captured. + * bootstrap.conf (XGETTEXT_OPTIONS_RUNTIME): New var. + * po/POTFILES.in: Add src/location.c, src/scan-code.l. + * runtime-po/POTFILES.in: Add data/push.c. + +2006-09-29 Paul Eggert + + Merge bootstrap changes from coreutils. + + 2006-09-28 Jim Meyering + + Automatically generated dependencies are important even + when all of the sources in a directory come from gnulib. + * bootstrap (gnulib_tool): Remove the "no-dependencies" automake + option that gnulib-tool adds to what becomes our lib/gnulib.mk. + + 2006-09-23 Jim Meyering + + * bootstrap (gnulib_tool_options): Add "--local-dir gl". + + 2006-09-20 Paul Eggert + + * bootstrap: Add support for --force. + (usage): New function. Describe usage less tersely. + (CVS_only_file): New var. + +2006-09-21 Paul Eggert + + * data/push.c (YYPUSH_MORE): Make it an enum instead. + (yypushparse): Use YYPUSH_MORE instead of the mystery constant. + Adjust white space and comments to match GNU style better. + +2006-09-20 Bob Rossi + + * data/push.c (yyresult_get): Remove function. + (YYPUSH_MORE): Add #define. + (yypushparse): Modify return value. + +2006-09-20 Paul Eggert + + * stamp-h.in: Remove; no longer needed. + * .cvsignore: Replace autom4te.cache and config.cache with *.cache. + Remove config.h, config.hin, intl (no longer created). + * lib/.cvsignore: Add config.h, config.hin, configmake.h, inttypes.h, + stamp-h1. + + Sync bootstrap from coreutils, as follows: + + 2006-09-18 Paul Eggert + + * bootstrap (symlink_to_gnulib): New function. + (cp_mark_as_generated): Use it, to prefer symlinks-to-gnulib + to copies-of-gnulib. + (cp_mark_as_generated, slurp, gnulib_files): + Avoid making a copy if it's the same as the old version. + (gnulib_files): Add support for this variable (used by Bison). + +2006-09-20 Paul Eggert + + * src/getargs.c (usage): Rework to use conventions similar to + coreutils, to make translation a bit easier and the code a bit + smaller. Problem reported by Tim Van Holder. + +2006-09-15 Paul Eggert + + Use some of gnulib's new modules, taken from coreutils. + + * bootstrap: Sync from coreutils, except add support for gnulib_files. + * bootstrap.conf: New file. + (gnulib_modules): Add configmake, inttypes, unistd. + (XGETTEXT_OPTIONS): Add complain, complain_at, + fatal, fatal_at, warn, warn_at, unexpected_end. + * configure.ac (AC_CONFIG_HEADERS): config.h is now in lib, not here. + (gl_USE_SYSTEM_EXTENSIONS): Remove; gl_EARLY now does this. + (gl_EARLY): Add. + (AM_STDBOOL_H): Remove; gl_INIT now dows this. + (gl_INIT): Add + (GNULIB_AUTOCONF_SNIPPET): Remove. + (AM_GNU_GETTEXT): Add; require formatstring macros since that's + the pickiest. + * lib/.cvsignore: Add inttypes_.h. + * lib/Makefile.am: Include gnulib.mk first so we can append to it. + (AM_CFLAGS): Add WERROR_CFLAGS, to be more like coreutils. + (BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES): Remove + no-longer-necessary initializations. + (lib_SOURCES): Remove, replacing by libbison_a_SOURCES. + * lib/subpipe.c: Include unconditionally, now that we + use the unistd module. + * src/system.h: Likewise. + * m4/.cvsignore: Remove *_gl.m4, gnulib.m4, inttypes_h.m4, uintmax_t.m4, + ulonglong.m4. Add gettext.m4, gnulib-cache.m4, gnulib-comp.m4, + gnulib-tool.m4, inttypes-h.m4, inttypes-pri.m4, inttypes.m4. + * src/Makefile.am (DEFS): Remove, since configmake does this for us. + (AM_CPPFLAGS): Remove -I../lib, since Automake does that for us. + * src/system.h: Include inttypes.h unconditionally, now that we + use the inttypes module. Don't bother to include stdint.h, since + inttypes.h now does that for us. + (LOCALEDIR): Remove, now that we use the configmake module. + * src/getargs.c: Include configmake.h. + * src/main.c: Likewise. + * src/output.c: Likewise. + * tests/atlocal.in (CPPFLAGS): Include from $abs_top_builddir/lib, + not from $abs_top_builddir, since config.h moved. + + + Port to GCC 2.95. First two problems reported by Michael Deutschmann in + . + + * src/parse-gram.y (symbol_declaration): Don't put statements + before declarations; it's not portable to C89. + * src/scan-code.l (handle_action_at): Likewise. + + * src/scan-code.l: Always initialize braces_level; the old code + left it uninitialized and therefore had undefined behavior. + + Don't attempt to redefine 'assert', since it runs afoul of + systems where standard headers (mistakenly) include . + Instead, define and use our own alternative, called 'aver'. + * src/reader.c: Don't include assert.h, since we no longer + use assert. + * src/scan-code.l: Likewise. + * src/system.h (assert): Remove, replacing with.... + (aver): New function, taking a bool arg. All uses changed. + * src/tables.c (pack_vector): Ensure that aver arg is bool, + not merely an integer. + +2006-09-15 Bob Rossi + + * data/Makefile.am (dist_pkgdata_DATA): Add push.c. + * data/c.m4 (YYPUSH): New. + (b4_push_if): New macro. Use it instead of #ifdef YYPUSH. + * src/getargs.c (push_parser): New var. + * src/getargs.h (push_parser): New declaration. + * src/output.c (prepare): Add macro insertion of `push_flag'. + * src/parse-gram.y (PERCENT_PUSH_PARSER): New token. + (prologue_declaration): Parse %push-parser. + * src/scan-gram.l: Scan new PERCENT_PUSH_PARSER token. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Add "Return" and "Now" to + list of removed lines from the traces observed. + (AT_CHECK_CALC_LALR): Added push parser tests. + +2006-09-13 Paul Eggert + + * NEWS: Version 2.3a. + * configure.ac (AC_INIT): Likewise. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Remove + "#define YYSTYPE int" that caused "make maintainer-check" to fail + due to header ordering dependencies. I don't know why the #define + was there. + + Fix glr.cc and lalr1.cc's use of YYDEBUG so that there's zero + runtime cost when YYDEBUG is not defined, and so that some tests + that used to fail now work. Problem and initial suggestion by + Paolo Bonzini. + * data/c++.m4 (b4_parse_param_cons): Omit leading ','. + * data/glr.cc (b4_parser_class_name): + Initialize yycdebug_ only if YYDEBUG. Also, initialize yydebug_. + (debug_level, set_debug_level): Affect yydebug_, not ::yydebug. + (yydebug_) [YYDEBUG]: New member. + (yycdebug_): Now defined only if YYDEBUG. + * data/lalr1.cc (yydebug_, yycdebug_): Now defined only if YYDEBUG. + (YYCDEBUG) [!YYDEBUG]: Don't use yydebug_ and yycdebug_. + (b4_parser_class_name): Initialize yydebug_ and yycdebug_ only + if YYYDEBUG. + (debug_stream, set_debug_stream, debug_level, set_debug_level): + Define only if YYDEBUG. + * tests/calc.at (_AT_DATA_CALC_Y) [!YYDEBUG]: Omit call to + set_debug_level. + * tests/regression.at (_AT_DATA_DANCER_Y) [!YYDEBUG]: Likewise. + * tests/calc.at (AT_CHECK_CALC_GLR_CC): Uncomment calls to + AT_CHECK_CALC_GLR_CC that are working now. + +2006-09-12 Paul Eggert + + * data/glr.cc (YYERROR_VERBOSE, YYTOKEN_TABLE): Remove. + We don't need them in glr.cc, and glr.c defines them. + Defining YYERROR_VERBOSE to 0 here breaks glr.c, since glr.c + assumes that defining it to anything is the same as defining + it to 1. Problem reported by Paolo Bonzini. + +2006-09-12 Paolo Bonzini (tiny change) + + * data/c.m4 (b4_null, b4_case): Define. + * src/output.c (prepare_symbols): Use b4_null. + (user_actions_output): Use b4_case. + +2006-09-11 Paul Eggert + + * data/glr.c (b4_shared_declarations): Put start-header first, + before any #includes that we generate, so that feature-test + macros work. Problem reported by Michael Deutschmann in + . + * data/lalr1.cc: Likewise. + * doc/bison.texinfo (Prologue): Document that feature-test macros + should be defined before any Bison declarations. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Put defns + that depend on location.hh after, not before, Bison decls, since + we now include location.hh after the first user prologue. + + * doc/bison.texinfo (Calc++ Parser): Fix memory leak reported by + Sander Brandenburg in + . + Also, fix minor white space and comment issues. + (Prologue): Mention that it's better to define feature-test macros + before Bison declarations. Problem reported by Michael Deutschmann. + + * README-cvs: Fix typo: "&" should be "&&". Problem reported + by Jim Meyering. + * m4/.cvsignore: Add argmatch.m4. Remove obstack.m4, strerror_r.m4. + This adjusts to recent gnulib changes. + +2006-09-04 Joel E. Denny + + Finish implementation of per-type %destructor/%printer. Discussed + starting at + + and + . + * NEWS (2.3+): Add a description of this feature to the default + %destructor/%printer description. + * doc/bison.texinfo (Freeing Discarded Symbols): Likewise. + * src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set): + Invoke semantic_type_destructor_set or semantic_type_printer_set when a + list node contains a semantic type. + * src/symtab.c, src/symtab.h: Extend with a table that associates + semantic types with their %destructor's and %printer's. + (semantic_type_from_uniqstr, semantic_type_get, + semantic_type_destructor_set, semantic_type_printer_set): New functions + composing the public interface of that table. + (symbol_destructor_get, symbol_destructor_location_get, + symbol_printer_get, symbol_printer_location_get): If there's no + per-symbol %destructor/%printer, look up the per-type before trying + the default. + * tests/actions.at (Per-type %printer and %destructor): New test case. + * tests/input.at (Default %printer and %destructor redeclared): + Extend to check that multiple occurrences of %symbol-default in a + single %destructor/%printer declaration is an error. + (Per-type %printer and %destructor redeclared, Unused values with + per-type %destructor): New test cases. + +2006-09-04 Joel E. Denny + + Require default %destructor/%printer to be declared using + %symbol-default instead of an empty symbol list, and start working on + new per-type %destructor/%printer. Discussed at + . + * NEWS (2.3+): Add %symbol-default to example. + * bison.texinfo (Freeing Discarded Symbols): Likewise. + (Table of Symbols): Add entry for %symbol-default. + * src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): New token. + (generic_symlist, generic_symlist_item): New nonterminals for creating + a list in which each item is a symbol, semantic type, or + %symbol-default. + (grammar_declaration): Use generic_symlist in %destructor and %printer + declarations instead of symbols.1 or an empty list. + (symbol_declaration, precedence_declaration, symbols.1): Update actions + for changes to symbol_list. + * src/reader.c: Update for changes to symbol_list. + * src/scan-code.l: Likewise. + * src/scan-gram.l: Scan new PERCENT_SYMBOL_DEFAULT token. + * src/symlist.c, src/symlist.h: Extend such that a list node may + represent a semantic type or a %symbol-default in addition to just an + ordinary symbol. Add switched functions for setting %destructor's and + %printer's. + * tests/actions.at, tests/input.at: Add %symbol-default to all default + %destructor/%printer declarations. + +2006-08-23 Joel E. Denny + + Whether the default %destructor/%printer applies to a particular symbol + isn't a question of whether the user *declares* that symbol (in %token, + for example). It's a question of whether the user by any means + *defines* the symbol at all (by simply using a char token, for + example). $end is defined by Bison whereas any other token with token + number 0 is defined by the user. The error token is always defined by + Bison regardless of whether the user declares it with %token, but we + may one day let the user define error as a nonterminal instead. + * NEWS (2.3+): Say "user-defined" instead of "user-declared". + * doc/bison.texinfo (Freeing Discarded Symbols): Likewise, and document + the meaning of "user-defined". + * tests/actions.at (Default %printer and %destructor for user-declared + end token): Rename to... + (Default %printer and %destructor for user-defined end token): ... + this. + + * src/symtab.c (symbol_destructor_get, symbol_printer_get): In the + computation of whether to apply the default, don't maintain a list of + every Bison-defined symbol. Instead, just check for a first character + of '$', which a user symbol cannot have, and check for the error token. + +2006-08-21 Joel E. Denny + + Don't apply the default %destructor or %printer to the error token, + $undefined, or $accept. This change fits the general rule that the + default %destructor and %printer are only for user-declared symbols, + and it solves several difficulties that are described in the new test + cases listed below. + * src/symtab.c (symbol_destructor_get, symbol_printer_get): Implement. + * tests/actions.at (Default %printer and %destructor are not for error + or $undefined, Default %printer and %destructor are not for $accept): + New test cases. + +2006-08-19 Joel E. Denny + + Allow %start after the first rule. + * src/reader.c (grammar_current_rule_begin): Don't set the start symbol + when parsing the first rule. + (check_and_convert_grammar): Search for it here after all grammar + declarations have been parsed. Skip midrules, which have dummy LHS + nonterminals. + * src/symtab.c (symbol_is_dummy): New function. + * src/symtab.h (symbol_is_dummy): Declare it. + * tests/input.at (%start after first rule): New test. + +2006-08-18 Joel E. Denny + + Redo some of the previous commit: add back the ability to use + non-aliased/undeclared string literals since it might be useful to + those declaring %token-table. + * src/reader.c (check_and_convert_grammar): Undo changes in previous + commit: don't worry about complaints from symbols_pack. + * src/symtab.c (symbol_new, symbol_class_set, + symbol_check_alias_consistency): Undo changes in previous commit: count + each string literal as a new symbol and token, assign it a symbol + number, and don't complain about non-aliased string literals. + (symbols_pack): Since symbol_make_alias still does not decrement symbol + and token counts but does still set aliased tokens to the same number, + symbol_pack_processor now leaves empty slots in the symbols array. + Remove those slots. + * tests/regression.at (Undeclared string literal): Remove test case + added in previous commit since non-aliased string literals are allowed + again. + (Characters Escapes, Web2c Actions): Undo changes in previous commit: + remove unnecessary string literal declarations. + * tests/sets.at (Firsts): Likewise. + +2006-08-18 Joel E. Denny + + Don't allow an undeclared string literal, but allow a string literal to + be used before its declaration. + * src/reader.c (check_and_convert_grammar): Don't invoke packgram if + symbols_pack complained. + * src/symtab.c (symbol_new): Don't count a string literal as a new + symbol. + (symbol_class_set): Don't count a string literal as a new token, and + don't assign it a symbol number since symbol_make_alias does that. + (symbol_make_alias): It's not necessary to decrement the symbol and + token counts anymore. Don't assume that an alias declaration occurs + before any uses of the identifier or string, and thus don't assert that + one of them has the highest symbol number so far. + (symbol_check_alias_consistency): Complain if there's a string literal + that wasn't declared as an alias. + (symbols_pack): Bail if symbol_check_alias_consistency failed since + symbol_pack asserts that every token has been assigned a symbol number + although undeclared string literals have not. + * tests/regression.at (String alias declared after use, Undeclared + string literal): New test cases. + (Characters Escapes, Web2c Actions): Declare string literals as + aliases. + * tests/sets.at (Firsts): Likewise. + +2006-08-14 Joel E. Denny + + In the grammar scanner, STRING_FINISH unclosed constructs and return + them to the parser in order to improve error messages. + * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER, + SC_BRACED_CODE, SC_PROLOGUE): Implement. + * tests/input.at (Unclosed constructs): New test case. + * tests/regression.at (Invalid inputs): Update now that unclosed %{ is + seen. + + * src/scan-gram.h, src/scan-gram.l (gram_last_braced_code_loc): Remove + unused global. + +2006-08-13 Joel E. Denny + + Handle string aliases for character tokens correctly. + * src/symtab.c (symbol_user_token_number_set): If the token has an + alias, check and set its alias's user token number instead of its own, + which is set to indicate the alias. Previously, every occurrence of + the character token in the grammar overwrote that alias indicator with + the character code. + * tests/input.at (String aliases for character tokens): New test. + +2006-08-12 Joel E. Denny + + * src/parse-gram.y: Add `%expect 0' so we don't overlook conflicts. + +2006-08-11 Paul Eggert + + * bootstrap: Put in need-ngettext argument to AM_GNU_GETTEXT, + to prevent failures when building on older platforms. + Check for autopoint failure. + Set XGETTEXT_OPTIONS to values that check for C format strings, + so that translators are warned about them (this also helps + prevent core dumps). + + * lib/subpipe.c (create_subpipe): Use new gnulib pipe_safer + function, since it simplifies our code a bit. + + * configure.ac (AC_ARG_ENABLE): Use -Wextra -Wno-sign-compare + rather than -W, so we don't get bogus warnings about sign comparisons. + Add -Wpointer-arith, since that warning is useful (it reports code + that does not conform to C89 and that some compilers reject). + * data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c: Undo latest change, + since it's no longer needed. + +2006-08-10 Joel E. Denny + + Clean up scanners a bit. + * src/flex-scanner.h (FLEX_NO_OBSTACK): New macro that blocks obstack + definitions so gcc won't warn when obstack_for_string is unused. + * src/scan-code.l: config.h and system.h are already #include'd by + scan-code-c.c, so get rid of them here. + * src/scan-gram.l: Likewise. + * src/scan-skel.l: Likewise, and use flex-scanner.h without obstack + definitions rather than duplicating the rest of it. + * src/scan-gram-c.c, scan-skel-c.c: #include "system.h". + +2006-08-09 Joel E. Denny + + Suppress signed/unsigned comparison warnings for yycheck. + * data/c.m4 (b4_safest_int_type): New macro. + * data/glr.c, data/lalr1.cc: Wherever you compare yycheck[i] against + a signed int type, cast it to b4_safest_int_type first. + * data/yacc.c: Likewise. + (b4_safest_int_type): Overwrite the one from c.m4 since b4_int_type is + also overwritten. + +2006-08-09 Ralf Wildenhues (tiny change) + + * doc/bison.texinfo: Fix some typos. + +2006-08-02 Paul Eggert + + * m4/.cvsignore: Add inttypes_h.m4,lib-ld.m4, lib-prefix.m4, + po.m4, stdint_h.m4, uintmax_t.m4, ulonglong.m4, warning.m4. + + * bootstrap (gnulib_tool): Stop using --assume-autoconf; + the latest gnulib does this a different way. + (get_translations): Sharuzzaman Ahmat Raslan reported that the ms + translation was patched, so stop omitting it. + +2006-07-29 Joel E. Denny + + Enable declaration of default %printer/%destructor. Make the parser + use these for all user-declared grammar symbols for which the user does + not declare a specific %printer/%destructor. Thus, the parser uses it + for token 0 if the user declares it but not if Bison generates it as + $end. Discussed starting at + , + , + and + . + * NEWS (2.3+): Mention. + * doc/bison.texinfo (Actions in Mid-Rule): It's no longer impossible to + declare a %destructor for a mid-rule's semantic value. It's just + impossible to declare one specific to it. + (Freeing Discarded Symbols): Mention that @$ can be used in %destructor + code. Describe default %destructor form. + * src/parse-gram.y (grammar_declaration): Parse default + %printer/%destructor declarations. + * src/output.c (symbol_destructors_output): Use symbol_destructor_get + and symbol_destructor_location_get rather than accessing the destructor + and destructor_location members of struct symbol. + (symbol_printers_output): Likewise but for %printer's. + * src/reader.c (symbol_should_be_used): Likewise but for %destructor's + again. + * src/symtab.c (default_destructor, default_destructor_location, + default_printer, default_printer_location): New static global + variables to record the default %destructor and %printer. + (symbol_destructor_get, symbol_destructor_location_get, + symbol_printer_get, symbol_printer_location_get): New functions to + compute the appropriate %destructor and %printer for a symbol. + (default_destructor_set, default_printer_set): New functions to set the + default %destructor and %printer. + * src/symtab.h: Prototype all those new functions. + * tests/actions.at (Default %printer and %destructor): New test to + check that the right %printer and %destructor are called, that they're + not called for $end, and that $$ and @$ work correctly. + (Default %printer and %destructor for user-declared end token): New + test to check that the default %printer and %destructor are called for + a user-declared end token. + * tests/input.at (Default %printer and %destructor redeclared, Unused + values with default %destructor): New tests to check related grammar + warnings and errors. + +2006-07-29 Joel E. Denny + + Clean up handling of %destructor for the end token (token 0). + Discussed starting at + + and + . + + Make the skeletons consistent in how they pop the end token and invoke + its %destructor. + * data/glr.c (yyrecoverSyntaxError, yyparse): Don't pop the start + state, which has token number 0, since this would invoke the + %destructor for the end token. + * data/lalr1.cc (yy::parser::parse): Don't check for the final state + until after shifting the end token, or else it won't be popped. + * data/yacc.c (yyparse): Likewise. + + * data/glr.c (yyparse): Clear the lookahead after shifting it even when + it's the end token. Upon termination, destroy an unshifted lookahead + even when it's the end token. + * data/lalr1.cc (yy::parser::parse): Likewise. + * data/yacc.c (yyparse): Likewise. + + * src/reader.c (packgram): Don't check rule 0. This suppresses unused + value warnings for the end token when the user gives the end token a + %destructor. + + * tests/actions.at (Printers and Destructors): Test all the above. + +2006-07-24 Paul Eggert + + Update to latest gnulib and gettext versions. + * bootstrap (gnulib-modules): Remove hard-locale, stdio-safer. + Add fopen-safer. + (gnulib_files): Add m4/warning.m4. Don't worry about files + overwritten by autopoint. + Replace gt_INTL_SUBDIR_CORE with an empty body in m4/gettext_gl.m4. + Suppress "id", "ms", "tr" translations for now, since gettext 0.15 + rejects them. + Don't use autoreconf; instead, invoke autopoint etc. by hand, + so that we can remove the intl files at a better time. + (intl_files_to_remove): Remove aclocal.m4, since it gets + rebuilt anyway. Remove m4/inttypes_h.m4, m4/inttypes.m4, + m4/isc-posix.m4, m4/lib-ld.m4, m4/lib-prefix.m4, m4/po.m4, + m4/stdint_h.m4, m4/uintmax_t.m4, m4/ulonglong.m4. + Add m4/inttypes-h.m4, m4/lock.m4, m4/visibility.m4. + Remove datarootdir hack; no longer needed. + * configure.ac: Use gl_WARNING_CFLAGS rather than BISON_WARNING. + (AM_GNU_GETTEXT_VERSION): Bump from 0.12 to 0.15. + * lib/.cvsignore: Remove hard-locale.c, hard-locale.h, strdup.c, + strdup.h. + * m4/.cvsignore: Remove hard-locale.m4, strdup.m4. + * m4/warning.m4: Remove from CVS, since we now use gnulib's version. + +2006-07-20 Paul Eggert + + * bootstrap: Adjust to today's change to gnulib-tool by invoking + it with --assume-autoconf='latest-stable'. + +2006-07-13 Joel E. Denny + + * src/parse-gram.y (grammar_declaration): Don't confuse Doxygen (at + least 1.4.7 and 1.4.4) by putting a #line between `typedef union + YYSTYPE' and `{'. + * src/muscle_tab.h (muscle_grow): Replace the header comments with + those from muscle_tab.c since the old ones are misleading. + +2006-07-13 Akim Demaille + + Support %define "KEY" {VALUE}. + * src/scan-code.h, src/scan-code.l (translate_action) + (translate_rule_action, translate_symbol_action, translate_code): + Return char *, not const char *. + * src/parse-gram.y (declaration): Rename as... + (prologue_declaration): this. + (string_content): Remove this nonterminal, use STRING. + (braceless, content, content.opt): New nonterminal. + Use them. + (%define): Now accept content.opt, i.e., accept also BRACED_CODE + as value. + * src/scan-gram.l (getargs.h): Don't include it. + +2006-07-12 Paul Eggert + + * data/lalr1.cc (YYCDEBUG): Use 'if (yydebug_) (*yycdebug_)' + rather than a for-loop that declares a local bool variable. This + should work around a compatibility problem with a Cray x1e C++ + compiler reported by Hung Nguyen in + . + The for-loop was introduced in the 2004-11-17 change but I don't + know why it was needed. + +2006-07-12 Akim Demaille + + * data/c.m4: Comment changes. + +2006-07-10 Akim Demaille + + * src/complain.c (error_message, ERROR_MESSAGE): New. + To factor... + (fatal_at, fatal, warn_at, warn, complain_at, complain): these. + * src/complain.h, src/complain.c (warning_issued): Remove, unused. + +2006-07-09 Paul Eggert + + * NEWS: Instead of %union, you can define and use your own union type + YYSTYPE if your grammar contains at least one tag. + Your YYSTYPE need not be a macro; it can be a typedef. + * doc/bison.texinfo (Value Type, Multiple Types, Location Type): + (Union Decl, Decl Summary): Document this. + * data/glr.c (YYSTYPE): Implement this. + * data/glr.cc (YYSTYPE): Likewise. + * data/lalr1.cc (YYSTYPE): Likewise. + * data/yacc.c (YYSTYPE): Likewise. + * src/output.c (prepare): Output tag_seen_flag. + * src/parse-gram.y (declaration, grammar_declaration): + Use 'union_seen' rather than 'typed' to determine whether + %union has been seen, since grammars can now be typed without + %union. + (symbol_declaration, type.opt, symbol_def): + Keep track of whether a tag has been seen. + * src/reader.c (union_seen, tag_seen): New vars. + (typed): remove. + * src/reader.h (union_seen, tag_seen, typed): Likewise. + * src/scan-code.l (untyped_var_seen): New variable. + (handle_action_dollar): Adjust to above changes. + (handle_action_dollar, handle_action_at): + Improve overflow checking for outlandish numbers. + * tests/input.at (AT_CHECK_UNUSED_VALUES): Redo test to + avoid new diagnostics generated by above changes. + * tests/regression.at (YYSTYPE typedef): Add test to check + for type tags without %union. + + * src/symlist.c (symbol_list_length): Return int, not unsigned + int, since callers expect int. This may need to get revisited + once we have proper integer overflow checking. + + * src/scan-gram.h (gram_scanner_cursor): Remove decl, since this + object is now static. + + * src/getargs.c (flags_argmatch): Return void, not int, + to pacify ./configure --enable-gcc-warnings. + + * src/flex-scanner.h (STRING_FREE): Don't use FLEX_PREFIX (last_string) + since last_string is already defined to FLEX_PREFIX (last_string). + +2006-07-09 Akim Demaille + + Implement --warnings/-W. + * src/getargs.c (report_argmatch, trace_argmatch): Remove, + replaced by... + (flags_argmatch, FLAGS_ARGMATCH): this new function and macro. + Adjust callers. + * src/getargs.h, src/getargs.c (warnings, warnings_flags) + (warnings_args, warnings_types): New. + (getargs, short_options, long_options): Accept -W/--warnings. + Sort the options by alphabetical order, upper case letter right + before its lower case. + +2006-07-09 Joel E. Denny + + Change %merge result type clash warnings to errors. Discussed at + . + * src/reader.c (record_merge_function_type): Use complain_at. + * tests/glr-regression.at (Missed %merge type warnings when LHS type is + declared later): Update test case results. + +2006-07-09 Akim Demaille + + * src/getargs.h, src/getargs.c: Swap --report and --trace handling + to be in alphabetical order. + (trace_args): Spelling fixes. + +2006-07-09 Paul Eggert + + * data/yacc.c (YYID, yy_stack_print): Prefix local vars with "yy" + so they don't collide with user-defined macros. + (yy_stack_print): Don't assume that yytype_int16 promotes to int; + this was never guaranteed, and now that we're using gnulib stdint, + which defines int_fast16_t to long int, the problem is exposed. + +2006-07-08 Paul Eggert + + * data/c.m4 (b4_basename): Simplify a bit, since we don't + need the full POSIX semantics (and weren't implementing them + anyway). + + Adjust to Autoconf 2.60 and today's gnulib. + * bootstrap (gnulib_modules): Add stdint. + Remove special case for m4/onceonly_2_57.m4, since gnulib-tool + no longer copies it. + (intl_files_to_remove): Remove m4/longlong.m4 and m4/wchar_t.m4, + since stdint needs the former and wcwidth (which is now required + by mbswidth) needs the latter. + Append 'datarootdir = @datarootdir@' to po/Makefile.in.in, to + work around a compatibility glitch between gettext 0.14.6 and + Autoconf 2.60. + * configure.ac (AC_PREREQ): Require Autoconf 2.60. + Do not check for uintptr_t, since new stdint module does the right + thing. + * lib/.cvsignore: Remove alloca.c, alloca.h, alloca_.h. + Add stdint.h, stdint_.h, wcwidth.h. + * m4/.cvsignore: Remove alloca.m4, onceonly.m4. + Add absolute-header.m4, double-slash-root.m4, longlong.m4, + stdint.m4, wchar_t.m4, wcwidth.m4. + * src/files.c: Include and in the + usual order for ../lib/*.h files. + (file_name_split): Use last_component, not base_name, to adjust + to gnulib changes. + * src/parse-gram.h: Include in the usual order + for ../lib/*.h files. + (YYTYPE_INT16, YYTYPE_INT8, YYTYPE_UINT16, YYTYPE_UINT8): + Define unconditionally, since we now assume the stdint module. + * src/scan-skel.l: Include . + (BASE_QPUTS): Use last_component, not base_name. + * src/system.h: Include in the usual order + for ../lib/*.h files. Include unconditionally, + since we now use the stdint module. + (uintptr_t): Declare if UINTPTR_MAX is not defined, not + HAVE_UINTPTR_T, since we now use the stdint module. + (base_name): Remove decl, since files now include + to get the decl. + +2006-07-08 Akim Demaille + + * data/c.m4 (b4_location_initial_column, b4_location_initial_line): + New, default to 1. + * data/yacc.c, data/glr.c, data/location.cc: Use them. + * NEWS, doc/bison.texinfo: The initial column and line are 1 by + default. + * tests/calc.at: Adjust. + +2006-07-08 Akim Demaille + + * data/c.m4 (b4_basename): New. + (b4_syncline): Also output the location of its invocation (from + the skeleton). + (b4_user_action, b4_define_user_action, b4_user_actions) + (b4_user_initial_action, b4_user_post_prologue, b4_user_start_header) + (b4_user_stype): New. + * data/yacc.c, data/glr.c, data/lalr1.cc, data/glr.cc: Use them. + +2006-07-07 Joel E. Denny + + In the grammar file, the first column is 1 not 0 on the first line as + on every other line. + * src/parse-gram.y (%initial-action): Initialize @$ correctly. + * tests/input.at (Torturing the Scanner): Update output. + + * src/scan-gram.l (scanner_cursor): Declare it static. + +2006-07-07 Joel E. Denny + + In warnings, say "previous declaration" rather than "first + declaration". + * src/symtab.c (redeclaration): Do that here. + * src/reader.c (record_merge_function_type): In the case of a result + type clash, report the previous declaration rather than the very first + one in the grammar file. + * tests/glr-regression.at (Missed %merge type warnings when LHS type is + declared later): Add a third declaration to check this behavior. + * tests/input.at (Incompatible Aliases): Update output. + +2006-06-27 Akim Demaille + + * doc/Doxyfile.in: New. + * doc/Makefile.am: Use it. + * src/lalr.h, src/symtab.h: Initial doxygenation. + +2006-06-26 Joel E. Denny + + Don't miss %merge result type warnings just because the LHS types are + declared after the %merge. This continues the effort of the previous + patch. + * src/reader.c (get_merge_function): Don't set the merger type yet. + (record_merge_function_type): New function for setting the merger type + and checking for clashes. + (grammar_current_rule_merge_set): Set the location of the %merge for + the current rule. + (packgram): Invoke record_merge_function_type for each rule now that + all symbol type declarations have been parsed. + * src/reader.h (merger_list.type_declaration_location): New member + storing the location of the first %merge from which the type for this + merging function was derived. + * src/symlist.h (symbol_list.merger_declaration_location): New member + storing the location of a rule's %merge, if any. + * tests/glr-regression.at (Missed %merge type warnings when LHS type is + declared later): New test to catch the error fixed by the above patch. + +2006-06-26 Joel E. Denny + + Get action warnings (grammar_rule_check) right even when symbol + declarations appear after the rules. Discussed at + + and + . + Don't mistake the type of $$ in a midrule to be that of its parent + rule's $$. + * src/reader.c (grammar_current_rule_end): Don't invoke + grammar_rule_check yet since not all symbol declarations may have been + parsed yet. + (grammar_midrule_action): Likewise. + Don't record whether the midrule's $$ has been used yet since actions + haven't been translated yet. + Record the midrule's parent rule and its RHS index within the parent + rule. + (grammar_current_rule_action_append): Don't translate the action yet + since not all symbol declarations may have been parsed yet and, thus, + warnings about types for $$, $n, @$, and @n can't be reported yet. + (packgram): Translate the action and invoke grammar_rule_check now that + all symbol declarations have been parsed. + * src/scan-code.l (handle_action_dollar): Now that this is invoked + after parsing the entire grammar file, the symbol list here in the case + of a midrule is actually the midrule's empty RHS, so reference its + parent rule's RHS where necessary. + On the other hand, now that you can already know it's a midrule, you + aren't forced to think $$ has the same type as its parent rule's $$. + (handle_action_at): In the case of a midrule, reference the parent rule + where necessary. + * src/symlist.c (symbol_list_new): Initialize new midrule-related + members. + (symbol_list_length): Now that this is invoked after all rules have + been parsed, a NULL symbol (rather than a NULL symbol list node) + terminates a rule. symbol_list_print already does this correctly. + * src/symlist.h (symbol_list.midrule_parent_rule, + symbol_list.midrule_parent_rhs_index): New members so that midrules can + remember their relationships with their parents. + * tests/input.at (Type Clashes): Extend to catch the midrule $$ error + fixed by the above patch. + (_AT_UNUSED_VALUES_DECLARATIONS, AT_CHECK_UNUSED_VALUES): New m4 macros + implementing... + (Unused values): ... this old test case and... + (Unused values before symbol declarations): ... this new test case. + This one is the same as `Unused values' except that all symbol + declarations appear after the rules in order to catch the rest of the + errors fixed by the above patch. + +2006-06-26 Joel E. Denny + + More cleanup. + * src/reader.c (current_rule): Declare it static since it's no longer + used outside this file. + (grammar_current_rule_action_append): Remove redundant arguments from + translate_rule_action invocation. + * src/reader.h (current_rule): Remove this unused extern. + * src/scan-code.h (translate_rule_action): Remove redundant arguments. + * src/scan-code.l (translate_rule_action): Likewise. + +2006-06-25 Joel E. Denny + + Clean up yesterday's patch. + * parse-gram.y (rhs): Move grammar_midrule_action invocation from here + to... + * src/reader.c (grammar_current_rule_action_append): ... here for + consistency with grammar_current_rule_symbol_append. + * tests/regression.at (Braced code in declaration in rules section): + Make yyerror and yylex static as usual. + +2006-06-24 Joel E. Denny + + Fix bug that mistakes braced code in a declaration in the rules section + to be a rule action. Mentioned at + . + * src/scan-gram.l: Move midrule action detection from the start of the + scanning of any braced code to... + * src/parse-gram.y (rhs): ... the parsing of braced code as a rule + action. For readability, use $2 and @2 rather than the equivalent + global variables. + * tests/regression.at (Braced code in declaration in rules section): + New test to catch the error fixed by the above patch. + + Work on code readability some. + * src/scan-code.l (current_rule): Get rid of this misleading and + redundant declaration: it's actually extern'ed in reader.h. + (YY_DECL, code_lex, handle_action_dollar, handle_action_at, + translate_action): Add a rule argument and use it instead of the global + current_rule. + (translate_rule_action): This already receives current_rule through an + argument, so pass it on to translate_action instead of assigning + current_rule to current_rule. + (translate_symbol_action, translate_code): Pass rule = NULL to + translate_action. + +2006-06-23 Joel E. Denny + + Rename %before-definitions to %start-header and %after-definitions to + %end-header. Don't use these declarations to separate pre-prologue + blocks from post-prologue blocks. Add new order-independent + declarations %before-header and %after-header as alternatives to the + traditional Yacc pre-prologue and post-prologue blocks. Discussed at + . + * NEWS (2.3+): Update for these changes. + * data/glr.c (b4_before_definitions): Update to... + (b4_start_header): ... this. + (b4_after_definitions): Update to... + (b4_end_header): ... this. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/yacc.c: Likewise. + * doc/bison.texinfo (The prologue): Update names, and replace remaining + prologue blocks with %*-header declarations. + (Calc++ Parser): Likewise. + (Decl Summary): Update names. + (Table of Symbols): Update description. + * src/parse-gram.y (PERCENT_AFTER_DEFINITIONS): Update to... + (PERCENT_END_HEADER): ... this. + (PERCENT_BEFORE_DEFINITIONS): Update to... + (PERCENT_START_HEADER): ... this. + (PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens. + (declaration): Update token names and m4 macro names. + When parsing %end-header and %start-header, invoke translate_code + before muscle_code_grow, and no longer set global booleans to remember + whether these declarations have been seen. + Parse new %after-header and %before-header. + * src/reader.c (before_definitions, after_definitions): Remove. + (prologue_augment): Accept a new bool argument to specify whether to + augment the pre-prologue or post-prologue. + * src/reader.h (before_definitions, after_definitions): Remove these + extern's. + (prologue_augment): Add new bool argument. + * src/scan-gram.l (PERCENT_AFTER_DEFINITIONS): Update to... + (PERCENT_END_HEADER): ... this. + (PERCENT_BEFORE_DEFINITIONS): Update to... + (PERCENT_START_HEADER): ... this. + (PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens. + * tests/actions.at (Printers and Destructors): Update names. + +2006-06-22 Joel E. Denny + + Add comparison operators for C++ location classes. Discussed at + . + * data/c++.m4 (b4_define_location_comparison): New boolean %define + declaration indicating whether filename_type has an operator==. If + filename_type is `std::string', it defaults to `1', `0' otherwise. + * data/location.cc: Iff b4_define_location_comparison is `1', add + operator== and operator!= for class position and for class location. + + Some minor fixes. + * src/scan-action.l: Remove unused file. + * src/symtab.c (symbol_printer_set): Use printer_location not + destructor_location. + * src/symtab.h (struct symbol): Replace incorrect source comment for + printer members. + * tests/input.at (Incompatible Aliases): Update output with correct + printer location. + +2006-06-20 Joel E. Denny + + Don't put the pre-prologue in the header file. For the yacc.c code + file and the glr.c header and code files, move the pre-prologue before + the token definitions. Add new %before-definitions and + %after-definitions to declare code that will go in both the header file + and code file. Discussed at + , + , + and + . + * NEWS (2.3+): Describe these changes. + * data/glr.c (b4_pre_prologue): Move from within to before... + (b4_shared_declarations): ... this. + Add new b4_before_definitions before b4_token_enums. + Add new b4_after_definitions at the end. + * data/glr.cc (b4_pre_prologue): Replace with... + (b4_before_definitions): ... this in the header file. + (b4_after_definitions): New near the end of the header file. + * data/lalr1.cc (b4_pre_prologue): Move from the header file to the + code file right before including the header file. + (b4_before_definitions): New in the previous position of + b4_pre_prologue in the header file. + (b4_after_definitions): New near the end of the header file. + * data/yacc.c: Clean up some m4 quoting especially in the header file. + (b4_token_enums_defines): In the code file, move to right before + YYSTYPE for consistency with the header file. + (b4_before_definitions): New right before b4_token_enums_defines in + both the header and code file. + (b4_after_definitions): New right after YYLTYPE and yylloc in both the + header and code file. + * doc/bison.texinfo (Prologue): Show use of %before-definitions instead + of prologues for %union dependencies. + (Decl Summary): In %defines description, mention the effect of + %before-definitions and %after-definitions on the header file. + (Calc++ Parser): Forward declare driver in a %before-definitions rather + than in the pre-prologue so that make check succeeds. + (Table of Symbols): Add entries for %before-definitions and + %after-definitions. + * src/parse-gram.y (PERCENT_BEFORE_DEFINITIONS): New token for + %before-definitions. + (PERCENT_AFTER_DEFINITIONS): New token for %after-definitions. + (declaration): Parse those declarations and append to + b4_before_definitions and b4_after_definitions, respectively. + * src/reader.c (before_definitions, after_definitions): New bools to + track whether those declarations have been seen. + (prologue_augment): Add to the post-prologue if %union, + %before-definitions, or %after-definitions has been seen. + * src/reader.h (before_definitions, after_definitions): New extern's. + * src/scan-gram.l: Scan the new declarations. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Place the second + prologue block in a %before-definitions or a %after-definitions based + on whether the %union is declared. + * tests/regression.at (Early token definitions with --yacc, Early token + definitions without --yacc): Move tests for token definitions into the + post-prologue since token names are no longer defined in the + pre-prologue. + +2006-06-20 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_from_uniqstr): New. + (symbol_get): Use it. + * src/parse-gram.y: Use it. + +2006-06-19 Joel E. Denny + + * src/scan-gram.l: Remove unused declaration of last_string_1 so the + build succeeds when configured with --enable-gcc-warnings. + +2006-06-19 Paul Eggert + + * src/parse-gram.y (char_name): New function. + (CHAR, STRING, string_content): For %printer, properly escape. + (ID): Prefer fputs to fprintf. + (id): Reindent to be consistent with other rules. + Properly quote char. + + The Translation Project changed its way of publishing translations + to maintainers. I haven't received any responses to my request + for supporting the old way, or for documenting the new way. I + have modified 'bootstrap' to use screen scraping + (in this case, HTML scraping). This is unreliable and inelegant, + but I don't see any better way. Yuck. + * bootstrap (TP_URL, WGET_COMMAND): New vars. + (get_translations): New function, which uses HTML scraping to + deduce locations of latest translations. + Use this function to grab both bison and bison-runtime .po files. + Don't bother priming the pump for the runtime-po domain any more, + as it's now translated better than bison is. + +2006-06-19 Akim Demaille + + * src/scan-gram.l: No longer "parse" things after `%union' until + `{'. Rather, return a single "%union" token. + No longer make symbols: return strings, and leave the conversion + to symbols to the parser. + (SC_PRE_CODE, token_type): Remove. + * src/parse-gram.y (%union): New field `character'. + Sort tokens. + (CHAR): New token. + (ID, ID_COLON): Now that the scanner no longer makes them + identifiers, adjust all uses to invoke symbol_get. + (id_colon): New, wraps the conversion from string to symbol. + (%union): Accept a possible union_name. + (symbol): Now can be a char. + * data/c.m4 (b4_union_name): Leave a default value. + * data/glr.c, data/yacc.c: Use it. + +2006-06-11 Joel E. Denny + + For associating token numbers with token names for "yacc.c", don't use + #define statements unless `--yacc' is specified; always use enum + yytokentype. Most important discussions start at: + , + , + and + . + * NEWS (2.3+): Mention. + * data/c.m4 (b4_yacc_if): New. + (b4_token_enums_defines): Use b4_yacc_if to decide whether to add the + token #define's. + * doc/bison.texinfo (Bison Options): Describe the effect of `--yacc' + on token name definitions. + * src/getargs.c (usage): Capitalize `Yacc' in English. + * src/output.c (prepare): Define b4_yacc_flag. + * tests/regression.at (Early token definitions): Test that tokens names + are defined before the pre-prologue not just before the post-prologue. + Remove this test case and copy to... + (Early token definitions with --yacc): ... this to test #define's. + (Early token definitions without --yacc): ... and this to test enums. + +2006-06-11 Paul Eggert + + * NEWS: Reword the post-2.3 change to not be so optimistic about + removing the old "look-ahead" spelling. + Update previous look-ahead/lookahead change reports. + * REFERENCES: look-ahead -> lookahead (since that's + what he actually wrote). + * doc/refcard.tex: look ahead -> lookahead, + look-ahead -> lookahead + +2006-06-09 Joel E. Denny + + For consistency, use `lookahead' instead of `look-ahead' or + `look_ahead'. Discussed starting at + + and then at + . + * NEWS: For the next release, note the change to `--report'. + * TODO, doc/bison.1: Update English. + * doc/bison.texinfo: Update English. + (Understanding Your Parser, Bison Options): Document as + `--report=lookahead' rather than `--report=look-ahead'. + * src/conflicts.c: Update English in comments. + (lookahead_set): Rename from look_ahead_set. + (flush_reduce): Rename argument look_ahead_tokens to lookahead_tokens. + (resolve_sr_conflict): Rename local look_ahead_tokens to + lookahead_tokens, and update other uses. + (flush_shift, set_conflicts, conflicts_solve, count_sr_conflicts, + count_rr_conflicts, conflicts_free): Update uses. + * src/getargs.c (report_args): Move "lookahead" before alternate + spellings. + (report_types): Update uses. + (usage): For `--report' usage description, state `lookahead' spelling + rather than `look-ahead'. + * src/getargs.h (report.report_lookahead_tokens): Rename from + report_look_ahead_tokens. + * src/lalr.c: Update English in comments. + (compute_lookahead_tokens): Rename from compute_look_ahead_tokens. + (state_lookahead_tokens_count): Rename from + state_look_ahead_tokens_count. + Rename local n_look_ahead_tokens to n_lookahead_tokens. + (lookahead_tokens_print): Rename from look_ahead_tokens_print. + Rename local n_look_ahead_tokens to n_lookahead_tokens. + Update other uses. + Update English in output. + (add_lookback_edge, initialize_LA, lalr, lalr_free): Update uses. + * src/print.c: Update English in comments. + (lookahead_set): Rename from look_ahead_set. + (print_reduction): Rename argument lookahead_token from + look_ahead_token. + (print_core, state_default_rule, print_reductions, print_results): + Update uses. + * src/print_graph.c: Update English in comments. + (print_core): Update uses. + * src/state.c: Update English in comments. + (reductions_new): Update uses. + (state_rule_lookahead_tokens_print): Rename from + state_rule_look_ahead_tokens_print, and update other uses. + * src/state.h: Update English in comments. + (reductions.lookahead_tokens): Rename from look_ahead_tokens. + (state_rule_lookahead_tokens_print): Rename from + state_rule_look_ahead_tokens_print. + * src/tables.c: Update English in comments. + (conflict_row, action_row): Update uses. + * tests/glr-regression.at + (Incorrect lookahead during deterministic GLR, + Incorrect lookahead during nondeterministic GLR): Rename + print_look_ahead to print_lookahead. + * tests/torture.at: Update English in comments. + (AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR): Rename from + AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR. + (Many lookahead tokens): Update uses. + * data/glr.c: Update English in comments. + * lalr1.cc: Likewise. + * yacc.c: Likewise. + * src/conflicts.h: Likewise. + * src/lalr.h: Likewise. + * src/main.c: Likewise. + * src/output.c: Likewise. + * src/parse-gram.c: Likewise. + * src/tables.h: Likewise. + * tests/calc.at: Likewise. + +2006-06-08 Joel E. Denny + + * src/flex-scanner.h (yytext): Remove stray `*/' in #define. + +2006-06-07 Paul Eggert + + * TODO: Add request from Nelson H. F. Beebe to be able to install + Bison without installing the yacc script. + +2006-06-07 Joel E. Denny + + * src/flex-scanner.h: For the sake of Flex 2.5.4, don't #define yyleng + and yytext if they're already #define'd. + * src/flex-scanner.h, src/location.h: Move #include "system.h" to... + * src/scan-code-c.c: ... here. + * src/scan-code.l, src/scan-gram.l: ... and here. Also #include + . + +2006-06-07 Joel E. Denny + + Get Bison to build again when configured with --enable-gcc-warnings. + * src/location.c, src/location.h, src/main.c, src/scan-code.l: Add some + missing #include's. + * src/scan-code.l (handle_action_dollar, handle_action_at): Rename + loc argument as it shadows a global. + * src/scan-gram.l: Remove stray comma that prevents boundary_set + invocation. + + * src/.cvsignore: Add scan-code.c. + +2006-06-07 Akim Demaille + + * src/scan-gram.l: Move the "add a trailing ; to actions" code + to... + * src/scan-code.l: here. + * tests/input.at (Torturing the Scanner): Fix another location + error. + +2006-06-07 Akim Demaille + + * src/Makefile.am (BUILT_SOURCES): Fix the trailing backslash. + +2006-06-06 Akim Demaille + + Extract the parsing of user actions from the grammar scanner. + As a consequence, the relation between the grammar scanner and + parser is much simpler. We can also split "composite tokens" back + into simple tokens. + * src/gram.h (ITEM_NUMBER_MAX, RULE_NUMBER_MAX): New. + * src/scan-gram.l (add_column_width, adjust_location): Move to and + rename as... + * src/location.h, src/location.c (add_column_width) + (location_compute): these. + Fix the column count: the initial column is 0. + (location_print): Be robust to ending column being 0. + * src/location.h (boundary_set): New. + * src/main.c: Adjust to scanner_free being renamed as + gram_scanner_free. + * src/output.c: Include scan-code.h. + * src/parse-gram.y: Include scan-gram.h and scan-code.h. + Use boundary_set. + (PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_INITIAL_ACTION) + (PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Remove the {...} part, + which is now, again, a separate token. + Adjust all dependencies. + Whereever actions with $ and @ are used, use translate_code. + (action): Remove this nonterminal which is now useless. + * src/reader.c: Include assert.h, scan-gram.h and scan-code.h. + (grammar_current_rule_action_append): Use translate_code. + (packgram): Bound check ruleno, itemno, and rule_length. + * src/reader.h (gram_in, gram__flex_debug, scanner_cursor) + (last_string, last_braced_code_loc, max_left_semantic_context) + (scanner_initialize, scanner_free, scanner_last_string_free) + (gram_out, gram_lineno, YY_DECL_): Move to... + * src/scan-gram.h: this new file. + (YY_DECL): Rename as... + (GRAM_DECL): this. + * src/scan-code.h, src/scan-code.l, src/scan-code-c.c: New. + * src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out): + (gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in): + (gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy): + Move these declarations, and... + (obstack_for_string, STRING_GROW, STRING_FINISH, STRING_FREE): + these to... + * src/flex-scanner.h: this new file. + * src/scan-gram.l (rule_length, rule_length_overflow) + (increment_rule_length): Remove. + (last_braced_code_loc): Rename as... + (gram_last_braced_code_loc): this. + Adjust to the changes of the parser. + Move all the handling of $ and @ into... + * src/scan-code.l: here. + * src/scan-gram.l (handle_dollar, handle_at): Remove. + (handle_action_dollar, handle_action_at): Move to... + * src/scan-code.l: here. + * src/Makefile.am (bison_SOURCES): Add flex-scanner.h, + scan-code.h, scan-code-c.c, scan-gram.h. + (EXTRA_bison_SOURCES): Add scan-code.l. + (BUILT_SOURCES): Add scan-code.c. + (yacc): Be robust to white spaces. + + * tests/conflicts.at, tests/input.at, tests/reduce.at, + * tests/regression.at: Adjust the column numbers. + * tests/regression.at: Adjust the error message. + +2006-06-06 Joel E. Denny + + * src/getargs.c (usage): Mention GLR not just LALR(1) in --help output. + Use Akim's wording from + . + +2006-06-06 Joel E. Denny + + Between Bison releases, manually append `+' to the previous Bison + release number, and use that as a signal to automatically print the + ChangeLog's CVS Id keyword from --version. Discussed starting at + . + * ChangeLog: Add Id header. + * configure.ac (AC_INIT): Append `+' to `2.3'. + * src/.cvsignore: Add revision.c. + * src/Makefile.am (bison_SOURCES): Add revision.c and revision.h. + (BUILT_SOURCES): Add revision.c. + (revision.c): New target rule. This file defines a new global variable + named revision. It initializes it with either the Id from ChangeLog + or, if VERSION doesn't contain `+', with the empty string. + * src/getargs.c (version): Print the value of revision. + * src/revision.h: Extern revision. + +2006-06-05 Paul Eggert + + * NEWS: Version 2.3. + * configure.ac (AC_INIT): Likewise. + +2006-05-30 Paul Eggert + + * data/glr.c (YYRECOVERING): Define to be a function-like macro + with no arguments, not as an object-like macro. This is for + compatibility with data/yacc.c. Problem reported by John P. Hartmann in + . + * doc/bison.texinfo (Action Features, Error Recovery, Table of Symbols): + Document this. + +2006-05-30 Joel E. Denny + + * src/getargs.c (usage): Back out yesterday's modification of the + --help output so that we don't have to wait for translation before + releasing 2.3. + +2006-05-29 Paul Eggert + + * doc/bison.texinfo (Introduction): Don't say "GLR grammar". + Problem reported by Akim Demaille. + +2006-05-29 Joel E. Denny + + * src/getargs.c (usage): Mention GLR not just LALR(1) in --help output. + +2006-05-26 Paul Eggert + + * data/yacc.c (yy_reduce_print): Omit trailing white space in + generated source code. Problem reported by Frans Englich in + . + +2006-05-22 Paul Eggert + + * Makefile.maint (gzip_rsyncable, GZIP_ENV): Compute within the + shell, not within 'make', so that 'make' by an ordinary builder + (using GNU make) does not worry about configuring gzip. This also + works around a bug reported independently by Keith Thompson and by + Georg Schwarz, whereby gzip 1.2.4 --help would output usage on + stderr rather than stdout, messing up the build logs. + +2006-05-21 Joel E. Denny + + * data/yacc.c (yyparse): Wrap the final return from yyparse inside YYID + to make sure that YYID will never be unused. This fixes a 'make + maintainer-check' failure caused by the recent changes to the 'Trivial + grammars' test case, which caused g++ 4.1.0 to complain that YYID was + not used. + * data/glr.c (yyparse): Wrap yyparse's return inside YYID just in case. + +2006-05-21 Joel E. Denny + + * data/glr.c (yyresolveLocations): Remove bogus YYASSERT that the + state before an empty RHS is always resolved here. Only the location + of that state is guaranteed to be resolved, and that's enough. This + fixes the remaining bug reported by Derek M. Jones in + . + * tests/glr-regression.at (Uninitialized location when reporting + ambiguity): Test the above case. + Also, the embedded comments in this test case claim it checks the case + of an empty RHS that has inherited the initial location. However, the + corresponding LHS was already resolved, so yyresolveLocations didn't + actually have reason to modify it. Fix this by forcing + nondeterministic operation at the beginning of the parse. + +2006-05-20 Paul Eggert + + * data/c.m4 (b4_yy_symbol_print_generate): + (b4_yy_symbol_print_generate): Use 'YYSTYPE const' rather than + 'const YYSTYPE', and similarly for YYLTYPE. This fixes one + of the bugs reported today by Derek M Jones in + . + * doc/bison.texinfo (Value Type): Document that YYSTYPE must be + defined to be a type name without parens or brackets. + (Location Type): Similarly for YYLTYPE. + * tests/regression.at (Trivial grammars): Put in a test for this + bug that will be caught by 'make maintainer-check' (though not, + alas, by 'make check' unless your compiler is picky). + +2006-05-19 Paul Eggert + + * NEWS: Version 2.2. + * configure.ac (AC_INIT): Likewise. + +2006-05-17 Joel E. Denny + + * data/glr.c (yyreportTree): Make room in yystates for the state + preceding the RHS. This fixes the segmentation fault reported by Derek + M. Jones in + . + (yyreportTree, yypdumpstack): Subtract 1 from yyrule before printing + to the user. Reported for yyreportTree by Derek M. Jones later in the + same thread. + * THANKS: Add Derek M. Jones. + Update my email address. + Fix typo in Steve Murphy's name. + +2006-05-14 Paul Eggert + + * data/glr.c (yyreportSyntaxError): Fix off-by-one error in + checking against YYLAST that caused the parser to miss a potential + alternative in its diagnostic. + Problem reported by Maria Jose Moron Fernandez in + . + * data/lalr1.cc (yysyntax_error_): Likewise. + * data/yacc.c (yysyntax_error): Likewise. + * tests/regression.at (_AT_DATA_DANCER_Y): Use static array for + tokens, in case we run into an older C compiler. + (_AT_DATA_EXPECT2_Y, AT_CHECK_EXPECT2): New macros. + Use them to check for the off-by-one error fixed above. + + * data/yacc.c (yytnamerr): Fix typo: local var should be of type + YYSIZE_T, not size_t. + * tests/regression.at (Trivial grammars): New test, to catch + the error fixed by the above patch. + +2006-05-14 Akim Demaille + + * doc/bison.texinfo (C++ Bison Interface): Clarify the naming + scheme. + Reported by Steve Murphy. + +2006-05-14 Akim Demaille + + * data/glr.cc, data/lalr1.cc: Using %defines is mandatory. + * data/glr.cc: b4_location_flag is now b4_locations_flag. + +2006-05-14 Akim Demaille + + Implement --trace=m4. + * src/getargs.c (trace_types, trace_args): Accept trace_m4. + * src/output.c (output_skeleton): When set, pass -dV to m4. + + Factor the handling of flags in m4. + * src/output.c (prepare): Rename the muscle names debug, defines, + error_verbose to debug_flag, defines_flag, error_verbose_flag. + * data/c.m4: Adjust. + (_b4_define_flag_if, b4_define_flag_if, b4_defines_if): New. + Use b4_define_flag_if to define other b4_FLAG_if macros. + (b4_location_if): As a consequence, rename as... + (b4_locations_if): this, for consistency. + Adjust all the skeletons. + +2006-05-14 Akim Demaille + + * etc/bench.pm: Shorten bench names. + +2006-05-14 Akim Demaille + + * src/output.h, src/output.c (error_verbose): Move to... + * src/getargs.h, src/getargs.c: here. + Sort the flags. + Adjust dependencies. + +2006-05-13 Paul Eggert + + * data/c.m4 (b4_copyright): Put the special exception for Bison + skeletons here, so we don't have to put it in each skeleton. All + uses changed. Suggested by Akim Demaille. Also, wrap the + copyright notice, in case it is longer than 80 columns. Replace + comma by newline after title. + +2006-05-11 Paul Eggert + + * doc/bison.texinfo (Calc++ Scanner): The flex behavior is an + incompatibility, not a bug. Mention that it wasn't fixed as of + flex 2.5.33. + +2006-05-11 Akim Demaille + + * examples/extexi: Enforce the precedence of concatenation over + >>. + Reported by Tommy Nordgren. + +2006-05-11 Akim Demaille + + * data/lalr1.cc (yytranslate_): Rename token as t to avoid clashes + with the member "token". + Reported by Martin Nylin. + +2006-05-08 Paul Eggert + + * data/glr.c: Switch to Bison 2.2 special-exception language in + the copyright notice. Use more-regular format for titles and + copyright notices. + * data/glr.cc: Likewise. + * data/location.cc: Likewise. + * data/yacc.cc: Likewise. + * doc/bison.texinfo (Conditions): Document this. + * NEWS: likewise. Upgrade version to 2.2. + +2006-04-27 Akim Demaille + + * data/glr.cc: Remove dead code. + +2006-04-25 Paul Eggert + + * bootstrap: Comment out the AM_CPPFLAGS line, since we don't use + that variable and the line breaks the bootstrap. Problem reported + by Juan M. Guerrero. + +2006-04-24 Akim Demaille + + * doc/bison.texinfo (Multiple start-symbols): New. + +2006-04-24 Akim Demaille + + * etc/README, etc/bench.pl: New. + +2006-04-03 Akim Demaille + + * src/scan-gram.l: Be robust to BRACED_CODE appearing before any + rule. + Reported by Mickael Labau. + * tests/input.at (Torturing the Scanner): Test it. + +2006-03-16 Paul Eggert + + * doc/bison.texinfo (Decl Summary): Don't mention yylloc twice. + Problem reported by Bob Rossi. + +2006-03-13 Paul Eggert + + * doc/bison.texinfo: Remove @shorttitlepage stuff; it wasn't used + and didn't really work. + For the index, use @ifnotinfo, not @iftex. + Minor cleanups of spacing and terminology. + +2006-03-12 Akim Demaille + + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Fix the definition + of AT_NAME_PREFIX when %name-prefix is not used. + +2006-03-12 Akim Demaille + + Apply --prefix to C++ skeletons too: they change the namespace. + The test suite already exercize these cases. + * data/c++.m4 (b4_namespace): New. + * data/lalr1.cc, data/glr.cc, data/location.cc: Use it instead of `yy'. + * data/lalr1.cc (yytnameerr_): Move its definition into the namespace. + * data/yacc.c, data/glr.c: Remove a useless `[]'. + * doc/bison.texinfo: Document it. + (Option Cross Key): Use @multitable in all formats. It looks + nicer, even in TeX outputs. + (Rules): Use the same code whatever the output type is. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS) + (_AT_BISON_OPTION_POPDEFS): Support AT_NAME_PREFIX. + * tests/calc.at: Use it, instead of hard coding `yy'. + +2006-03-10 Akim Demaille + + * TODO: Remove dead items. + +2006-03-10 Akim Demaille + + * doc/FAQ: Remove, merged into... + * doc/bison.texinfo (FAQ): this. + * doc/Makefile.am (EXTRA_DIST): Adjust. + +2006-03-10 Akim Demaille + + * data/c.m4 (b4_token_enum): Always define the enum of tokens, + even if empty. + * data/lalrl1.cc, data/glr.cc (parser::token_type): New. + * doc/bison.texinfo (Calc++ Scanner): Use it. + +2006-03-09 Paul Eggert + + Fix two nits reported by twlevo, plus one more that I discovered. + + * src/assoc.h (assoc_to_string): Give a name to the arg, as + this is the usual Bison style. + * src/location.h (location_print): Likewise. + + * src/reader.h (token_name): Likewise. + +2006-03-08 Paul Eggert + + Fix some nits reported by twlevo. + * doc/FAQ: Remove ancient Y2K FAQ, replacing it with "secure" + and "POSIX". Use more-modern syntax for URLs. Mention C++ + and ask for Java. Don't hardwire OS version numbers. Add + copyright notice. + * m4/.cvsignore: Add unistd_h.m4, for latest gnulib. + * src/conflicts.c (solved_conflicts_obstack): Now static. + +2006-03-08 Joel E. Denny + + * doc/bison.texinfo (Introduction): Mention GLR and C++ as on the web + page. Say "you can use it" not "you may use it" as on the web page; + we're describing capabilities not granting permission. + +2006-03-06 Paul Eggert + + * data/glr.c (yyresolveLocations): Rename local variables to avoid + shadowing warnings. Use usual patter for iterating through RHS. + * tests/glr-regression.at + (Uninitialized location when reporting ambiguity): + Modify yylex so that it uses its argument, rather than trying + to rely on ARGSUSED (which doesn't work for gcc with warnings). + const char -> char const. + + * tests/Makefile.am ($(srcdir)/package.m4, maintainer-check-valgrind): + Don't use tabs inside commands; it messes up 'ps'. + Problem reported by twlevo. + +2006-03-06 Joel E. Denny + + * tests/glr-regression.at (Uninitialized location when reporting + ambiguity): New test case. + * data/glr.c (yyresolveLocations): New function, which uses + YYLLOC_DEFAULT. + (yyresolveValue): Invoke yyresolveLocations before reporting an + ambiguity. + * doc/bison.texinfo (Default Action for Locations): Note + YYLLOC_DEFAULT's usage for ambiguity locations. + (GLR Semantic Actions): Cross-reference those notes. + +2006-03-04 Joel E. Denny + + * tests/glr-regression.at (Leaked semantic values when reporting + ambiguity): Remove unnecessary union and type declarations. + (Leaked lookahead after nondeterministic parse syntax error): New test + case. + * data/glr.c (yyparse): Check for zero stacks remaining before + attempting to shift the lookahead so that you don't lose it. + +2006-03-02 Joel E. Denny + + Avoid memory leaks by not invoking longjmp in yyreportAmbiguity. + * tests/glr-regression.at (Leaked semantic values when reporting + ambiguity): New test case. + * data/glr.c (yyreportAmbiguity): Invoke yyyerror directly and return + yyabort rather than invoking yyFail, which invokes longjmp. Remove the + now unnecessary yystackp parameter. + (yyresolveValue): Return yyreportAmbiguity's result. Now the necessary + destructors can be called. + + * tests/glr-regression.at: Don't invoke bison with `-t' unnecessarily + in existing testcases. + +2006-03-02 Joel E. Denny + + Don't leak semantic values for parent RHS when a user action cuts the + parser, and clean up related code a bit. + * tests/glr-regression.at (Leaked merged semantic value if user action + cuts parse): Rename to... + (Leaked semantic values if user action cuts parse): ... this. Add check + for leaked parent RHS values. + * data/glr.c (yydestroyGLRState): In debugging output, distinguish + between an unresolved state (non-empty chain of semantic options) and + an incomplete one (signaled by an empty chain). + (yyresolveStates): Document the interface. Move all manipulation of a + successfully or unsuccessfully resolved yyGLRState to... + (yyresolveValue): ... here so that yyresolveValue always leaves a + yyGLRState with consistent data and thus is easier to understand. + Remove the yyvalp and yylocp parameters since they are always just + taken from the yys parameter. When reporting a discarded merged value + in debugging output, note that it is incompletely merged. Document the + interface. + (yyresolveAction): If resolving any of the RHS states fails, destroy + them all rather than leaking them. Thus, as long as user actions are + written to clean up the RHS correctly, yyresolveAction always cleans up + the RHS of a semantic option. Document the interface. + +2006-02-27 Paul Eggert + + * data/glr.c (yyexpandGLRStack): Catch an off-by-one error that + led to a segmentation fault in GNU Pascal. Problem reported + by Waldek Hebisch. + +2006-02-21 Joel E. Denny + + * doc/bison.texinfo (Mid-Rule Actions): Explain how to bury a + mid-rule action inside a nonterminal symbol in order to declare a + destructor for its semantic value. + +2006-02-16 Paul Eggert + + * data/yacc.c [(! defined yyoverflow || YYERROR_VERBOSE) && ! + YYSTACK_USE_ALLOCA && ! defined YYSTACK_ALLOC && defined + __cplusplus && ! defined _STDLIB_H && ! + ((defined YYMALLOC || defined malloc) && (defined YYFREE || + defined free))]: Include rather than rolling our own + declarations of malloc and free, to avoid problems with + incompatible declarations (using 'throw') C++'s stdlib.h. This + should fix Debian bug 340012 + , + reported by Guillaume Melquiond. + +2006-02-13 Paul Eggert + + * NEWS: Clarify symbols versus types in unused-value warnings. + + * configure.ac (AC_INIT): Bump version number. + +2006-02-13 Paul Eggert + + * NEWS: Version 2.1a. + * tests/headers.at (AT_TEST_CPP_GUARD_H): Declare yyerror and yylex, + since C99 requires this. + +2006-02-11 Paul Eggert + + * m4/c-working.m4: New file. + * configure.ac (BISON_TEST_FOR_WORKING_C_COMPILER): Use it. + +2006-02-10 Paul Eggert + + * Makefile.maint: Merge from coreutils. + +2006-02-09 Paul Eggert + + More portability fixes for problems summarized by Nelson H. F. Beebe. + + * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Catch a + configuration screwup "./configure CC=/opt/SUNWspro/bin/c89 + CFLAGS="-xarch=generic64" CXX=/opt/SUNWspro/bin/CC + LDFLAGS="-xarch=generic64" with Sun C 5.7 on Solaris 10; this + messes up because C++ code is compiled in 32-bit mode but linked + in 64-bit mode. + +2006-02-08 Paul Eggert + + More portability fixes for problems summarized by Nelson H. F. Beebe. + + * doc/bison.texinfo (Calc++ Scanner): Work around a bug in flex + 2.5.31. This resembles the 2005-10-10 patch to src/scan-skel.l. + + * examples/calc++/Makefile.am (check_PROGRAMS): Renamed from + nodist_PROGRAMS, since we don't need to actually compile the + example if we're just doing a plain 'make'. This avoids bothering + the installer unnecessarily about problems due to weird C++ + compilers. + +2006-02-06 Paul Eggert + + More portability fixes for problems summarized by Nelson H. F. Beebe. + + * tests/headers.at (AT_TEST_CPP_GUARD_H): Use #include <...> rather + than #include "...", and compile with -I'.'. The old method was + not portable, according to Posix and the C standard, and it does + not work with Sun C 5.7, where previous #line directives affect + the working directory used in later #include "..." directives. + +2006-02-06 Juan Manuel Guerrero + + Various DJGGP specific issues in /djgpp + +2006-02-02 Paul Eggert + + More portability fixes for problems summarized by Nelson H. F. Beebe. + + * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check that + '#include ' works and that you can apply ++ to iterators. + +2006-02-01 Paul Eggert + + Work around portability problems summarized by Nelson H. F. Beebe in + . + + * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check + that '#include ' works. + + * data/lalr1.cc (yytranslate_): No longer inline, to work around a + porting problem to g++ 3.4.3 on Darwin 7.9.0, where g++ complained + "warning: sorry: semantics of inline function static data `const + unsigned char translate_table[262]' are wrong (you'll wind up with + multiple copies)". + + * lib/bbitset.h (struct bitset_vtable): Rename members not, and, + or, xor to not_, and_, or_, and xor_, respectively. This works + around a bug in GCC 3.4.3 on Irix 6.5, which apparently has a + random system header somewhere that includes the equivalent of + . + + * tests/headers.at (AT_TEST_CPP_GUARD_H): Don't assume that "$CC + -E" works; it apparently doesn't work with PathScale EKO Compiler + Suite Version 2.0. + +2006-01-30 Joel E. Denny + + During deterministic GLR operation, user actions should be able to + influence the parse by changing yychar. To make this easier to fix and + to make glr.c easier to evolve in general, don't maintain yytoken in + parallel with yychar; just compute yytoken when needed. + * tests/glr-regression.at (Incorrect lookahead during deterministic + GLR): Check that setting yychar in a user action has the intended + effect. + * data/glr.c (yyGLRStack): Remove yytokenp member. + (yyclearin): Don't set *yytokenp. + (yyprocessOneStack, yyreportSyntaxError, yyrecoverSyntaxError): Examine + yychar rather than *yytokenp to determine the current lookahead. + Compute yytoken locally when needed. + (yyparse): Likewise. Remove the local yytoken that yytokenp used to + point to. + + * doc/bison.texinfo (Bison Options): Remove stray sentence fragment + after `--report' documentation. + +2006-01-30 Paul Eggert + + * src/parse-gram.y (grammar_declaration): Location of printer + symbol is @1, not list->location. Bug reported by twlevo. + * tests/input.at (Incompatible Aliases): Adjust to above change. + +2006-01-29 Paul Eggert + + * tests/input.at (AT_CHECK_UNUSED_VALUES): Remove. Instead, do + all the test at once. This makes the output easier to read in the + normal case. + + Fix a longstanding bug uncovered by bro-0.9a9/src/parse.y, which I + got from . The bug is that + when two actions appeared in succession, the second one was + scanned before the first one was added to the grammar rule + as a midrule action. Bison then output the incorrect warning + "parse.y:905.17-906.36: warning: unused value: $3". + * src/parse-gram.y (BRACED_CODE, action): These are no longer + associated with a value. + (rhs): Don't invoke grammar_current_rule_action_append. + (action): Invoke it here instead. + * src/reader.c (grammar_midrule_action): Now extern. + (grammar_current_rule_action_append): Don't invoke + grammar_midrule_action; that is now the scanner's job. + * src/reader.h (last_string, last_braced_code_loc): + (grammar_midrule_action): New decls. + * src/scan-gram.l (last_string): Now extern, sigh. + (last_braced_code_loc): New extern variable. + ("{"): Invoke grammar_midrule_action if the current + rule already has an action. + ("}"): Set last_braced_code_loc before returning. + * tests/input.at (AT_CHECK_UNUSED_VALUES): + Add some tests to check that the above changes fixed the bug. + +2006-01-27 Paul Eggert + + * src/reader.c (symbol_should_be_used): Renamed from symbol_typed_p. + All used changed. Check whether the symbol has a destructor, + not whether it is typed. + * tests/input.at (AT_CHECK_UNUSED_VALUES): Add a destructor, so + that the values are still reported as unused. All line numbers + adjusted. + +2006-01-23 Paul Eggert + + Work around a bug in bro 0.8, which underparenthesizes its + definition of YYLLOC_DEFAULT. + * data/glr.c: Change all uses of YYLLOC_DEFAULT to parenthesize + their arguments. + * data/lalr1.cc: Likewise. + * data/yacc.cc: Likewise. + +2006-01-22 Paul Eggert + + Work around a bug in Pike 7.0, and give the Pike folks a + better way to override the usual int widths. + * data/yacc.c (b4_int_type): Use yytype_uint8, etc., so that the + user can override the types. + (short): #undef, to work around a bug in Pike 7.0. + (yytype_uint8, yytype_int8, yytype_uint16, yytype_int16): New types. + (union yyalloc.yyss): Use yytype_int16 rather than short. + All uses changed. + (yysigned_char): Remove. + * src/parse-gram.y (YYTYPE_UINT8, YYTYPE_INT8, YYTYPE_UINT16): + (YYTYPE_INT16): New macros, to test the new facility in yacc.c. + * tests/regression.at (Web2c Actions): Adjust to above changes. + + * src/reader.c (check_and_convert_grammar): New function. + (reader): Close the input file even if something went wrong during + parsing. Minor file descriptor leak reported by twlevo. + + * src/assoc.c (assoc_to_string): Use a default: abort (); case + to pacify gcc -Wswitch-default. + * src/scan-gram.l (adjust_location): Use a default: break; case + to pacify gcc -Wswitch-default. + * src/scan-skel.h (skel_get_lineno, skel_get_in, skel_get_out): + (skel_get_leng, skel_get_text, skel_set_lineno, skel_set_in): + (skel_set_out, skel_get_debug, skel_set_debug, skel_lex_destroy): + Move these decls to scan-skel.l, since they don't need to be + visible elsewhere. + * src/scan-skel.l: Accept the above decls. + (skel_lex): New decl, to pacify GCC when unpatched flex 2.5.31 + is used. + +2006-01-21 Paul Eggert + + * Makefile.cfg (local-checks-to-skip): Add changelog-check, + since we don't want to insist on a version number at the start + of the changelog every time. + * Makefile.maint: Sync from coreutils a bit better. + (sc_trailing_blank): Renamed from sc_trailing_space. + All uses changed. + (sc_no_if_have_config_h, sc_require_config_h): + (sc_prohibit_assert_without_use): New rules. + (sc_obsolete_symbols): Don't catch Makefile.maint itself. + (sc_dd_max_sym_length): Fix leading spaces in rule. + (sc_system_h_headers): Prefix with @. + (sc_useless_cpp_parens, m4-check): Output line numbers. + (changelog-check): Allow version only in head. + * data/c.m4: Use "defined FOO" instead of "defined (FOO)", to + satisfy new Makefile.maint rule. + * data/glr.c: Likewise. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/yacc.c: Likewise. + * lib/ebitsetv.c: Likewise. + * lib/lbitset.c: Likewise. + * lib/subpipe.c: Likewise. + * lib/timevar.c: Likewise. + * src/system.h: Likewise. + * data/yacc.c (YYSTYPE): Don't generate trailing spaces in output. + * djgpp/Makefile.maint: Add copyright notice. + * djgpp/README.in: Likewise. + * djgpp/config.bat: Likewise. + * djgpp/config.site: Likewise. + * djgpp/config_h.sed: Likewise. + * djgpp/djunpack.bat: Likewise. + * djgpp/config.sed: Fix copyright notice to match standard format. + * djgpp/subpipe.h: Likewise. + * lib/bitsetv-print.c: Likewise. + * lib/bitsetv.c: Likewise. + * lib/subpipe.h: Likewise. + * lib/timevar.c: Likewise. + * lib/timevar.h: Likewise. + * djgpp/subpipe.c: Use standard recipe for config.h. + * lib/abitset.c: Likewise. + * lib/bitset.c: Likewise. + * lib/bitset_stats.c: Likewise. + * lib/bitsetv-print.c: Likewise. + * lib/bitsetv.c: Likewise. + * lib/ebitsetv.c: Likewise. + * lib/get-errno.c: Likewise. + * lib/lbitset.c: Likewise. + * lib/subpipe.c: Likewise. + * lib/timevar.c: Likewise. + * lib/vbitset.c: Likewise. + * tests/local.at: Likewise. + * src/scan-gram.l: Don't include verify.h, since system.h does + that for us. + * .x-sc_require_config_h: New file. + * .x-sc_unmarked_diagnostics: New file. + +2006-01-20 Paul Eggert + + Be a bit more systematic about using 'abort'. + * lib/abitset.c (abitset_test): Remove ATTRIBUTE_UNUSED; not needed. + * lib/bitset.c (bitset_bytes, bitset_init, bitset_op4_cmp): + Put 'default: abort ();' before some other case, to satisfy older + pedantic compilers. + * lib/bitset_stats.c (bitset_stats_init): Likewise. + * lib/ebitset.c (ebitset_elt_find, ebitset_op3_cmp): Likewise. + * lib/lbitset.c (lbitset_elt_find, lbitset_op3_cmp): Likewise. + * src/conflicts.c (resolve_sr_conflict): Likewise. + * src/vcg.c (get_color_str, get_textmode_str, get_shape_str): + (get_decision_str, get_orientation_str, get_node_alignment_str): + (get_arrow_mode_str, get_crossing_type_str, get_view_str): + (get_linestyle_str, get_arrowstyle_str): Likewise. + * src/conflicts.c (resolve_sr_conflict): + Use a default case rather than one for the one remaining enum + value, to catch invalid enum values as well. + * src/lalr.c (set_goto_map, map_goto): + Prefer "assert (FOO);" to "if (!FOO) abort ();". + * src/nullable.c (nullable_compute, token_definitions_output): + Likewise. + * src/reader.c (packgram, reader): Likewise. + * src/state.c (transitions_to, state_new, state_reduction_find): + Likewise. + * src/symtab.c (symbol_user_token_number_set, symbol_make_alias): + (symbol_pack): Likewise. + * src/tables.c (conflict_row, pack_vector): Likewise. + * src/scan-skel.l (QPUTS): Remove unnecessary parens. + (BASE_QPUTS, "@output ".*\n): Remove unnecessary asserts. + * src/system.h: Don't include . + (assert): New macro. + + * doc/bison.texinfo (Prologue, Rules, Actions, Union Decl, Action Decl): + (Destructor Decl, Parser Function, Pure Calling): + Describe rules for braces inside C code more carefully. + +2006-01-19 Paul Eggert + + Fix some porting glitches found by Nelson H. F. Beebe. + * lib/abitset.c (abitset_resize): Rewrite to avoid warnings from + compilers that don't understand that abort () does not return. + * src/state.c (transitions_to): Likewise. + * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check + that '#include ' works. + * src/system.h (INT8_MIN, INT16_MIN, INT32_MIN, INT8_MAX): + (INT16_MAX, UINT8_MAX, INT32_MAX, UINT16_MAX, UINT32_MAX): + #undef if ! defined __STDC_VERSION__ || __STDC_VERSION__ < 199901, + for the benefit of some pre-C99 compilers. + + * bootstrap: Undo changes to gnulib files that autoreconf made. + + Minor fixups to get 'make maintainer-check' to work. + * configure.ac: Don't use -Wnested-externs, as it's incompatible + with the new verify.h implementation. + * data/c.m4 (b4_yy_symbol_print_generate): YYUSE (yyoutput). + * data/glr.c (YYUSE): Depend on __GNUC__ as well. + * data/yacc.c (YYUSE): Likewise. + * data/lalr1.cc (yysyntax_error_): YYUSE (yystate). + * lib/subpipe.c (end_of_output_subpipe): The args are unused. + * src/parse-gram.y (declaration): Don't pass a string constant + to a function that expects char *, since GCC might complain + about the constant value. + * src/reader.c (symbol_typed_p): Add parens to pacify GCC. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): #undef yylloc and yylval + before #defining them. + * tests/glr-regression.at + (Incorrectly initialized location for empty right-hand side in GLR): + In yyerror, use the msg arg. + (Corrupted semantic options if user action cuts parse): + (Incorrect lookahead during deterministic GLR): + (Incorrect lookahead during nondeterministic GLR): + Don't name a local var 'index'; it shadows string.h's 'index'. + +2006-01-19 Akim Demaille + + * tests/calc.at (_AT_DATA_CALC_Y): Initialize the whole initial + location, not just parts of it. + +2006-01-18 Paul Eggert + + * NEWS: Document the fact that multiple %unions are now allowed. + * doc/bison.texinfo (Union Decl): Likewise. + * TODO: This feature is now implemented, so remove it from + the wishlist. + + * Makefile.maint: Merge with coreutils Makefile.maint. + (CVS_LIST): Use build-aux version if available. + (VERSION_REGEXP): New macro. + (syntax-check-rules): Add sc_no_if_have_config_h, + sc_prohibit_assert_without_use, sc_require_config_h, + sc_useless_cpp_parens. + (sc_obsolete_symbols): Check for O_NDELAY. + (sc_dd_max_sym_length): Track coreutils. + (sc_unmarked_diagnostics): Look in all files, not just *.c. + (sc_useless_cpp_parens): New rule. + (news-date-check): Look for version or today's date. + (changelog-check): Don't require version number near head. + (copyright-check): Use current year instead of hardwiring 2005. + (my-distcheck): Depend on $(release_archive_dir)/$(prev-tgz). + (announcement): Add --gpg-key-ID. + + * djgpp/config.sed: Add copyright notice, and replace "filesystem" + with "file system". + + Avoid undefined behavior that addressed just before the start of an + array. Problem reported by twlevo. + * src/reader.c (packgram): Prepend a new sentinel before ritem. + * src/lalr.c (build_relations): Rely on new sentinel. + * src/gram.c (gram_free): Adjust to new sentinel. + +2006-01-12 Joel E. Denny + + * data/glr.c (yyGLRStateSet): Rename yylookaheadStatuses to + yylookaheadNeeds. All uses updated. + (yysplitStack): Rename local yynewLookaheadStatuses to + yynewLookaheadNeeds. + * data/glr-regression.at (Incorrect lookahead during nondeterministic + GLR): In comments, change `lookahead status' to `lookahead need'. + +2006-01-11 Paul Hilfinger + + * data/glr.c (yysplitStack): A little stylistic rewrite. + +2006-01-11 Paul Hilfinger + + * data/glr.c (yyaddDeferredAction): Flesh out the comment. + +2006-01-11 Joel E. Denny + + * doc/bison.texinfo: Fix some typos. + (GLR Semantic Actions): New subsection discussing special + considerations because GLR semantic actions might be deferred. + (Actions): Mention look-ahead usage of yylval. + (Actions and Locations): Mention look-ahead usage of yylloc. + (Special Features for Use in Actions): Add YYEOF entry and mention it + in the yychar entry. + In the yychar entry, remove mention of the local yychar case (pure + parser) since this is irrelevant information when writing semantic + actions and since it's already discussed in `Table of Symbols' where + yychar is otherwise described as an external variable. + In the yychar entry, don't call it the `current' look-ahead since it + isn't when semantic actions are deferred. + In the yychar and yyclearin entries, add note about deferred semantic + actions. + Add yylloc and yylval entries discussing look-ahead usage. + (Look-Ahead Tokens): When discussing yychar, don't call it the + `current' look-ahead, and do mention yylval and yylloc. + (Error Recovery): Cross-reference `Action Features' when mentioning + yyclearin. + (Table of Symbols): In the yychar entry, don't call it the `current' + look-ahead. + In the yylloc and yylval entries, mention look-ahead usage. + +2006-01-08 Joel E. Denny + + * tests/glr-regression.at: Update copyright year to 2006. + +2006-01-06 Joel E. Denny + + * data/glr.c (yyGLRStateSet): Add yybool* yylookaheadStatuses member to + use during nondeterministic operation to track which stacks have + actually needed the current lookahead. + (yyinitStateSet, yyfreeStateSet, yyremoveDeletes, yysplitStack): + Allocate, deallocate, resize, and otherwise shuffle space for + yylookaheadStatuses in parallel with yystates member of yyGLRStateSet. + (yysplitStack, yyprocessOneStack, yyparse): Set lookahead status + appropriately during nondeterministic operation. + (yySemanticOption): Add int yyrawchar, YYSTYPE yyval, and YYLTYPE yyloc + members to store the current lookahead to be used by the deferred + user action. + (yyaddDeferredAction): Add size_t yyk parameter specifying the stack + from which the RHS is taken. Set the lookahead members of the new + yySemanticOption according to the lookahead status for stack yyk. + (yyglrShiftDefer, yyglrReduce): Pass yyk parameter on to + yyaddDeferredAction. + (yyresolveAction): Set yychar, yylval, and yylloc to the lookahead + members of yySemanticOption before invoking yyuserAction, and then set + them back to their current values afterward. + (yyparse): Set yychar = YYEMPTY where yytoken = YYEMPTY. + (yyreportAmbiguity): Add /*ARGSUSED*/ to pacify lint. + * tests/glr-regression.at: Remove `.' from the ends of recent test case + titles for consistency. + (Leaked merged semantic value if user action cuts parse): In order to + suppress lint warnings, use arguments in merge function, and assign + char value < 128 in main. + (Incorrect lookahead during deterministic GLR): New test case. + (Incorrect lookahead during nondeterministic GLR): New test case. + +2006-01-06 Joel E. Denny + + * data/c.m4 (b4_yy_symbol_print_generate): In yy_symbol_print, accept + !yyvaluep as signal that no semantic value is available to print. + * data/glr.c (yydestroyGLRState): If state is not resolved, don't try + to print a semantic value. + +2006-01-06 Joel E. Denny + + * tests/glr-regression.at: For consistency with my newer test cases, + don't thank myself. + +2006-01-05 Joel E. Denny + + * data/glr.c (yyresolveValue): When merging semantic options, if at + least one user action succeeds but a later one cuts the parse, then + destroy the semantic value before returning rather than leaking it. + (yyresolveStates): If a user action cuts the parse and thus + yyresolveValue fails, ignore the (unset) semantic value rather than + corrupting the yyGLRState, and empty the semantic options list since + the user actions should have called all necessary destructors. + Simplify code with YYCHK. + * tests/glr-regression.at (Corrupted semantic options if user action + cuts parse): New test case. + (Undesirable destructors if user action cuts parse): New test case. + Before applying any of this patch, this test case never actually failed + for me... but only because the corrupted semantic options usually + masked this bug. + (Leaked merged semantic value if user action cuts parse): New test + case. + +2006-01-05 Akim Demaille + + * src/reader.c, src/symlist.h, src/symlist.c: s/mid_rule/midrule/. + +2006-01-04 Paul Eggert + + * data/c.m4 (b4_c_modern): New macro, with a new provision for + _MSC_VER. Problem reported by Cenzato Marco. + (b4_c_function_def): Use it. + * data/yacc.c (YYMODERN_C): Remove. All uses replaced by + b4_c_modern. + (yystrlen, yystpcpy, yyparse): Use b4_c_function... macros rather + than rolling our own. + +2006-01-04 Akim Demaille + + Also warn about non-used mid-rule values. + * src/symlist.h, src/symlist.c (symbol_list): Add a mid_rule + member. + (symbol_list_new): Adjust. + * src/reader.c (symbol_typed_p): New. + (grammar_rule_check): Use it. + (grammar_midrule_action): Bind a mid-rule LHS to its rule. + Check its rule. + * tests/input.at (AT_CHECK_UNUSED_VALUES): New. + Use it. + * tests/actions.at (Exotic Dollars): Adjust. + +2006-01-04 Akim Demaille + + * src/reader.c (grammar_midrule_action): If $$ is set in a + mid-rule, move the `used' bit to its lhs. + * tests/input.at (Unused values): New. + * tests/actions.at (Exotic Dollars): Adjust: exp is not typed. + +2006-01-03 Paul Eggert + + * doc/bison.texinfo (Bison Options): Say more accurately what + --yacc does. + * src/parse-gram.y (rules_or_grammar_declaration): Don't complain + about declarations in the grammar when in Yacc mode, as POSIX does + not require a diagnostic when the grammar uses extensions. + + * src/reduce.c (reduce_grammar): Remove unnecessary cast to bool. + + Warn about dubious constructions like "%token T T". + Reported by twlevo. + * src/symtab.h (struct symbol.declared): New member. + * src/symtab.c (symbol_new): Initialize it to false. + (symbol_class_set): New arg DECLARING, specifying whether + this is a declaration that we want to warn about, if there + is more than one of them. All uses changed. + + * data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c: + Allow multiple %union directives, whose contents concatenate. + * src/parse-gram.y (grammar_declaration): Likewise. + Use muscle_code_grow, so that we don't need stype_line any more. + All uses changed. + + * src/muscle_tab.c (muscle_grow): Fix comment. + + * ChangeLog, data/c.m4, data/glr.c, data/glr.cc, data/location.cc: + * data/yacc.c, src/getargs.c, src/output.c, tests/cxx-type.at: + Update copyright year to 2006. + +2006-01-03 Akim Demaille + + Have glr.cc pass (some of) the calc.at tests. + * data/glr.cc (b4_parse_param_orig): New. + (b4_parse_param): Improve its definition, and bound it more + clearly in the skeleton. + (b4_epilogue): Append, instead of prepending, in order to keep + #line consistency. + Simplify the generation of auxiliary functions: locations and + purity are mandated. + (b4_global_tokens_and_yystype): Honor it. + * data/location.cc (c++.m4): Don't include it. + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Define AT_GLR_CC_IF + and AT_SKEL_CC_IF. + * tests/calc.at (AT_CHECK_CALC): Rely on AT_SKEL_CC_IF instead of + AT_LALR1_CC_IF. + Be sure to initialize the first position's filename. + (AT_CHECK_CALC_LALR1_CC): Add %location and %defines, they are + mandated anyway. + (AT_CHECK_CALC_GLR_CC): New. + Use it to exercise glr.cc as a lalr1.cc drop-in replacement. + +2006-01-02 Akim Demaille + + * src/output.c (output_skeleton): Don't hard wire the inclusion of + c.m4. + * data/c++.m4, data/glr.c, data/yacc.c: Include c.m4. + * data/glr.cc: Do not include stack.hh. + +2006-01-02 Joel E. Denny + + * data/glr.c: Reformat whitespace with tabs. + (b4_lpure_formals): Remove this unused m4 macro. + * tests/cxx-type.at: Reformat whitespace with tabs. + (_AT_TEST_GLR_CXXTYPES): In union Node, rename node_info to nodeInfo + since it's a member. Rename type to isNterm for clarity. + +2005-12-29 Akim + + Let glr.cc catch up with symbol_value_print. + * data/glr.cc (b4_yysymprint_generate): Replace by... + (b4_yy_symbol_print_generate): this. + (yy_symbol_print, yy_symbol_value_print): Declare them. + +2005-12-28 Paul Eggert + + * src/location.h (boundary): Note that a line or column equal + to INT_MAX indicates an overflow. + * src/scan-gram.l: Include verify.h. Don't include get-errno.h. + (rule_length_overflow, increment_rule_length, add_column_width): + New functions. + ({id}, "\"", "'"): + ("}"): + Use increment_rule_length rather than incrementing it by hand. + (adjust_location, handle_syncline): Diagnose overflow. + (handle_action_dollar, handle_action_at): + Fix bug with monstrosities like $-2147483648. + Remove now-unnecessary checks. + (scan_integer): Verify assumptions and remove now-unnecessary checks. + (convert_ucn_to_byte): Verify assumptions. + (handle_syncline): New arg LOC. All callers changed. + Don't store through a value derived from char const * pointer. + + * src/reader.c (grammar_rule_check): Rewrite slightly to avoid + GCC warnings. + +2005-12-27 Paul Eggert + + * src/reader.c (grammar_midrule_action, grammar_symbol_append): + Remove unnecessary forward static decls. + +2005-12-27 Akim Demaille + + * src/reader.c (grammar_current_rule_check): Also check that $$ + is used. + Take the rule to check as argument, hence rename as... + (grammar_rule_check): this. + * src/reader.h, src/reader.c (grammar_rule_begin, grammar_rule_end): + Rename as... + (grammar_rule_begin, grammar_rule_end): these, for consistency. + (grammar_midrule_action, grammar_symbol_append): Now static. + * tests/torture.at (input): Don't rely on the default action + being always performed. + * tests/calc.at: "Set" $$ even when the action is "cut" with + YYERROR or other. + * tests/actions.at (Exotic Dollars): Instead of using unused + values, check that the warning is issued. + +2005-12-22 Paul Eggert + + * NEWS: Improve wording for unused-value warnings. + +2005-12-22 Akim Demaille + + * data/lalr1.cc, data/yacc.c, data/glr.c, data/c.m4 + (b4_yysymprint_generate): Rename as... + (b4_yy_symbol_print_generate): this. + Generate yy_symbol_print instead of yysymprint. + Generate also yy_symbol_value_print, and use it. + +2005-12-22 Akim Demaille + + * NEWS: Warn about unused values. + * src/symlist.h, src/symlist.c (symbol_list, symbol_list_new): Add + a `used' member. + (symbol_list_n_get, symbol_list_n_used_set): New. + (symbol_list_n_type_name_get): Use symbol_list_n_get. + * src/scan-gram.l (handle_action_dollar): Flag used symbols. + * src/reader.c (grammar_current_rule_check): Check that values are + used. + * src/symtab.c (symbol_print): Accept 0. + * tests/existing.at: Remove the type information. + Empty the actions. + Remove useless actions (beware of mid-rule actions: perl -000 + -pi -e 's/\s*\{\}(?=[\n\s]*[|;])//g'). + * tests/actions.at (Exotic Dollars): Use unused values. + * tests/calc.at: Likewise. + * tests/glr-regression.at (No users destructors if stack 0 deleted): + Likewise. + + * src/gram.c (rule_useful_p, rule_never_reduced_p): Use + rule_useful_p. + +2005-12-21 Paul Eggert + + Undo 2005-12-01 tentative license wording change. The wording is + still being reviewed by the lawyers, and we don't want to wait for + them before publishing a test release. For now, revert to the + previous wording. + * NEWS: Undo 2005-12-01 change. + * data/glr.c: Revert to previous license wording. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/location.cc: Likewise. + * data/yacc.c: Likewise. + + * NEWS: Reword %destructor vs YYABORT etc. + * data/glr.c: Use American spacing, for consistency. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/yacc.c: Likewise. + * data/yacc.c: Reformat comments slightly. + * doc/bison.texinfo: Replace "non-" with "non" when that makes sense, + for consistency. Fix some spelling errors and reword recently-included + text slightly. + * tests/cxx-type.at: Cast results of malloc, for C++. + +2005-12-21 Joel E. Denny + + * tests/cxx-type.at: Construct a tree, count the parents of shared + nodes, and free each node once and only once. Previously, the memory + for semantic values was leaked instead. + +2005-12-21 Joel E. Denny + + * data/glr.c (struct yyGLRStack): If pure, add yyval and yyloc members. + (yylval, yylloc): If pure, #define to yystackp->yyval and + yystackp->yyloc similar to yychar and yynerrs. + (yyparse): If pure, remove local yylval and yylloc. Add local + yystackp to accommodate pure definitions of yylval and yylloc. + (b4_lex_param, b4_lyyerror_args, b4_lpure_args): If pure, change + yylvalp and yyllocp to &yylval and &yylloc. + (nerrs, char, lval, lloc): If pure, add #define's for b4_prefix[] + namespace. Previously, nerrs and char were missing, but lval and lloc + weren't necessary. + (yyprocessOneStack, yyreportSyntaxError, yyrecoverSyntaxError): Remove + yylvalp and yyllocp parameters since, if pure, these are now always + accessible through yystackp. If not pure, they are still accessible + globally. + * data/glr.c, data/yacc.c (YYLLOC_DEFAULT): Change `if (N)' to + `if (YYID (N))' to pacify lint. + +2005-12-21 Akim Demaille + + YYACCEPT, YYERROR, and YYABORT, as user actions, should not + destroy the RHS symbols of a rule. + * data/yacc.c (yylen): Initialize to 0. + Keep its value to the number of items to possibly shift. + In particular, a regular successful parse that ends on YYFINAL by + a (internal) YYACCEPT must not have yylen != 0. + (yyerrorlab, yyreturn): Pop the RHS. + Reorder a bit to emphasize the `shifting' bits of code. + (YYPOPSTACK): Now accept a number of items to pop. + * data/lalr1.cc: Likewise. + * data/glr.c: Formatting changes. + Use goto instead of fall through. + * doc/bison.texinfo (Destructor Decl): Complete. + +2005-12-20 Juan Manuel Guerrero + + * Makefile.am: DJGPP specific files added to EXTRA_DIST. + * djgpp/Makefile.maint: Fix PACKAGE variable computation. + * djgpp/config.bat: Replace every occurence of the file name + scan-gram-c.c with c-scan-gram.c. The same for scan-skel-c.c with + c-scan-skel.c to conform with the 8.3 file name restriction on MSDOS. + * djgpp/config.sed: Replace every occurence of the file name + scan-gram-c.c with c-scan-gram.c. The same for scan-skel-c.c with + c-scan-skel.c to conform with the 8.3 file name restriction on MSDOS. + * djgpp/djunpack.bat: DJGPP specific file. + * djgpp/fnchange.lst: DJGPP specific file. + * djgpp/README.in: Add new information about how to unpack the bison + source on MSDOS and other systems which have 8.3 file name restrictions + using djunpack.bat and fnchange.lst. + +2005-12-12 Paul Eggert + + * bootstrap (build_cvs_prefix): Remove; unused. + (CVS_PREFIX): Adjust to yesterday's Savannah reorganization + when getting gnulib. + +2005-12-12 "Joel E. Denny" + + * data/glr.c: Reorder typedef declarations for structs to match order + of struct declarations. + Rename yystack everywhere to yystackp except in yyparse where it's not + a pointer. + (yyglrShift): Change parameter YYSTYPE yysval to YYSTYPE* yyvalp for + consistency. + (yyis_table_ninf): Change 0 to YYID (0) to pacify lint. + (yyreportSyntaxError): Add /*ARGSUSED*/ to pacify lint. + (yyparse): Change while (yytrue) to while ( YYID (yytrue)) to pacify + lint. + +2005-12-09 Paul Eggert + + * tests/sets.at (Accept): Fix typos in regular expression used to + sed out the final state number. + + Work around portability problem on Solaris 10: flex-generated + files include before , which messes up + because the latter defines __EXTENSIONS__. Address the problem + by creating two new little files that include first, + then include the flex-generated files. Rewrite everyone else + to include first, as well. + * lib/timevar.c: Always include "config.h". + * src/Makefile.am (bison_SOURCES): Replace scan-gram.l with + scan-gram-c.c, and scan-skel.l with scan-skel-c.c. + (EXTRA_bison_SOURCES): New macro. + * src/scan-gram-c.c, src/scan-skel-c.c: New files. + * src/system.h: Don't include config.h. + * src/LR0.c: Include first. + * src/assoc.c: Likewise. + * src/closure.c: Likewise. + * src/complain.c: Likewise. + * src/conflicts.c: Likewise. + * src/derives.c: Likewise. + * src/files.c: Likewise. + * src/getargs.c: Likewise. + * src/gram.c: Likewise. + * src/lalr.c: Likewise. + * src/location.c: Likewise. + * src/main.c: Likewise. + * src/muscle_tab.c: Likewise. + * src/nullable.c: Likewise. + * src/output.c: Likewise. + * src/parse-gram.y: Likewise. + * src/print.c: Likewise. + * src/print_graph.c: Likewise. + * src/reader.c: Likewise. + * src/reduce.c: Likewise. + * src/relation.c: Likewise. + * src/state.c: Likewise. + * src/symlist.c: Likewise. + * src/symtab.c: Likewise. + * src/tables.c: Likewise. + * src/uniqstr.c: Likewise. + * src/vcg.c: Likewise. + + * src/parse-gram.y: Fix minor problems uncovered by lint. + (current_lhs, current_lhs_location): Now static. + (current_assoc): Remove unused variable. + + Cleanups so that Bison-generated parsers have less lint. + * data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): + Prepend /*ARGSUSED*/, for lint's sake. + * data/glr.c (YYUSE): Properly parenthesize, and use an alternate + definition if 'lint' is defined. + (YYID): New macro (or function, if lint). + All uses of /*CONSTCOND*/0 replaced by YYID(0). + * data/yacc.c: Likewise. + * data/glr.c (yyuserAction, yyuserMerge, yy_reduce_print): + (yyrecoverSyntaxError): Prepend /*ARGSUSED*/. + * data/glr.cc (YYLLOC_DEFAULT): Omit /*CONSTCOND*/ since this code + is C++ only. + * data/lalr1.cc (YYUSE): Just use a cast, since this code is C++ only. + * data/yacc.c (YYSTACK_FREE) [defined YYSTACK_ALLOC]: + Use YYID(0) rather than 0, for lint. + (yystrlen): Rewrite to avoid lint warning about ptrdiff_t overflow. + (yysyntax_error): Rewrite to avoid lint warnings about parenthesization. + +2005-12-07 Paul Eggert + + * tests/glr-regression.at + (Improper handling of embedded actions and dollar(-N) in GLR parsers): + Close memory leak reported by twlevo. + +2005-12-06 "Joel E. Denny" + + * data/glr.c (yyprocessOneStack, yyparse): Synchronize the shift for + all stacks. + (yyparse): Iterate another stack in order to call user destructors. + * tests/glr-regression.at (No users destructors if stack 0 deleted): + New test case. + (Duplicated user destructor for lookahead): This test now is expected + to succeed. + +2005-12-01 Paul Eggert + + * NEWS: Document the following change. + * data/yacc.c: Say "parser skeleton" rather than "file", since + it's no longer just a file. + * data/glr.c: Grant a special exception for C GLR parsers, that + reads like the already-existing exception for C LALR(1) parsers. + * data/glr.cc: Likewise. + * data/lalr1.cc: Likewise. + * data/location.cc: Likewise. + * data/yacc.c: Reword the "written by" statement to clarify that + it was the parser skeleton, not the entire output file. + * data/glr.c: Written by Paul Hilfinger. + * data/glr.cc: Written by Akim Demaille. + * data/lalr1.cc: Likewise. + +2005-11-18 Paul Eggert + + * data/yacc.c (yy_reduce_print, YY_REDUCE_PRINT): + Fix typos in previous change that broke 'make check'. + YY_REDUCE_PRINT cannot be a pseudo-varargs macro; that isn't + supported in C. + * tests/calc.at (_AT_CHECK_CALC,_AT_CHECK_CALC_ERROR): + Don't check NUM-STDERR-LINES, since the output format is fluctuating. + We can revert this once things settle down. + + * src/conflicts.c (conflicts_print): Don't print file name twice + when %expect fails because there were no conflicts. + * doc/bison.texinfo (Expect Decl): Tighten up wording in previous + change. + * tests/conflicts.at (%expect not enough, %expect too much): + (%expect with reduce conflicts): Adjust to new behavior. + +2005-11-18 Akim Demaille + + * src/conflicts.c (conflicts_print): Unsatisfied %expectation are + errors. + * NEWS: Document this. + * doc/bison.texinfo (Expect Decl): Likewise. + +2005-11-16 Akim Demaille + + Generalize the display of semantic values and locations in traces. + * data/glr.c (yy_reduce_print): Fix indices (again). + * data/c++.m4 (b4_rhs_value, b4_rhs_location): Don't expect + literal integers. + * data/lalr1.cc (yyreduce_print): Rename as... + (yy_reduce_print): this. + Display values and locations. + * data/yacc.c (yy_reduce_print): Likewise. + (YY_REDUCE_PRINT): Adjust to pass the required arguments. + (yysymprint): Move higher to be visible from yy_reduce_print). + (yyparse): Adjust. + * tests/calc.at: Adjust the expected length of the traces. + +2005-11-14 Akim Demaille + + * data/glr.c (yy_reduce_print): The loop was quite wrong: type are + from 1 to N, while values and location start at 0. + (b4_rhs_location, b4_rhs_value): Add parens around $1 and $2. + +2005-11-14 Akim Demaille + + * data/glr.c (yy_reduce_print): Fix the $ number. + +2005-11-14 Akim Demaille + + "Use" parse parameters. + * data/c.m4 (b4_parse_param_for, b4_parse_param_use): New. + * data/glr.c, data/glr.cc: Use them. + * data/glr.c (YYUSE): Have a C++ definition that supports + non-pointer types. + +2005-11-14 Akim Demaille + + * data/glr.c (yyexpandGLRStack): Declare only if defined. + +2005-11-14 Akim Demaille + + * data/glr.cc: New. + * data/m4sugar/m4sugar.m4 (m4_prepend): New. + +2005-11-12 Akim Demaille + + Let position and location be PODs. + * data/location.cc (position::initialize, location::initialize): New. + (position::position, location::location): Define only if + b4_location_constructors is defined. + * data/lalr1.cc (b4_location_constructors): Define it for backward + compatibility. + * doc/bison.texinfo (Initial Action Decl): Use initialize. + +2005-11-12 Akim Demaille + + * data/lalr1.cc: Move the body of the ctor and dtor into the + parser file (instead of the header). + Wrap the implementations in a "namespace yy". + +2005-11-12 Akim Demaille + + Have glr.c include its header file when created. + * data/glr.c (b4_shared_declarations): New. + Output them verbatim in the parser if !%defines, otherwise + output then in the header file, and include it instead. + +2005-11-11 Akim Demaille + + * data/glr.c: Comment changes. + +2005-11-11 Akim Demaille + + When yydebug, report semantic and location values for reductions. + * data/glr.c (yy_reduce_print): Report the semantic values and the + locations. + (YY_REDUCE_PRINT): Adjust. + (yyglrReduce): Use them. + (b4_rhs_value, b4_rhs_location): Remove m4_eval invocations. + * data/c.m4 (b4_yysymprint_generate): Specify the const arguments. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Remove the reduction + traces. + +2005-11-10 Akim Demaille + + * data/glr.c (yynewGLRStackItem, YY_RESERVE_GLRSTACK): New. + (yyaddDeferredAction, yyglrShift, yyglrShiftDefer): Use them. + (yyexpandGLRStack, YYRELOC): Define only when YYSTACKEXPANDABLE. + +2005-11-09 Albert Chin-A-Young + + * m4/cxx.m4, examples/Makefile.am: Don't build + examples/calc++ if no C++ compiler is available. (trivial change) + +2005-11-09 Akim Demaille + + * src/scan-skel.l: Use a couple of asserts. + +2005-11-03 Akim Demaille + + In some (weird) cases, the final state number is incorrect. + Reported by Alexandre Duret-Lutz. + * src/LR0.c (state_list_append): Remove the computation of + final_state. + (save_reductions): Do it here. + (get_state): Alpha conversion. + (generate_states): Use a for loop. + * src/gram.h (item_number_is_rule_number) + (item_number_is_symbol_number): New. + * src/state.c: Use assert. + * src/system.h: Include assert.h. + * tests/sets.at (Accept): New. + +2005-10-30 Paul Hilfinger + + * data/glr.c (yyfill): Adjust comment. + (yyresolveAction): Initialize default location properly + for empty right-hand sides. + (yydoAction): Ditto. + Add comment explaining apparently dead code. + * tests/glr-regression.at + (Incorrectly initialized location for empty right-hand side in GLR): + New test. + +2005-10-30 Paul Eggert + + * bootstrap (cleanup_gnulib): New function. Use it to clean up + gnulib when interrupted. This fixes some race conditions and + works around some portability problems (one noted by Paul + Hilfinger). + +2005-10-22 Akim + + * Makefile.cfg: Adjust to config -> build-aux. + Reported by twledo. + +2005-10-21 Akim Demaille + + * data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): Pass + the %parse-params. + * data/glr.c (YY_SYMBOL_PRINT, yydestroyGLRState): Adjust. + * data/yacc.c (b4_Pure_if): Rename as... + (b4_yacc_pure_if): this. + (YY_SYMBOL_PRINT, yyparse): Adjust. + * doc/bison.texinfo: Formatting changes. + +2005-10-21 Akim Demaille + + Finish the transition config -> build-aux. + * configure.ac, Makefile.am: Use build-aux. + * config/prev-version, config/announce-gen, config/Makefile.am: + Move to... + * build-aux/prev-version, build-aux/announce-gen, + * build-aux/Makefile.am: here. + +2005-10-14 Akim Demaille + + * examples/calc++/test: Use set -x only when VERBOSE. + +2005-10-13 Paul Eggert + + * NEWS: Bison now warns if it finds a stray `$' or `@' in an action. + * src/scan-gram.l ([$@]): Implement this. + +2005-10-13 Akim Demaille + + * src/scan-skel.l: Output the base name parts of the parser and + header file names. + * tests/output.at (AT_CHECK_OUTPUT): Support subdirectories, and + additional checks. + Use this to exercise C++ outputs in subdirs. + Reported by Oleg Smolsky. + +2005-10-12 Paul Eggert + + * data/c.m4 (b4_c_function_def): Look at __C99_FUNC__, not at + __STDC_VERSION__, as IBM cc 7.0 doesn't define the latter either. + Problem reported by John P. Hartmann. + * data/yacc.c (YYMODERN_C): Likewise. Don't define if the user has + already defined it. + +2005-10-12 Akim Demaille + + * src/parse-gram.y (version_check): Exit 63 to please missing + (stands for "version mismatch). + * tests/input.at, doc/bison.texinfo: Adjust. + +2005-10-10 Paul Eggert + + Work around portability problems with Visual Age C compiler + (xlc and xlC_r) reported by John P. Hartmann. + * data/location.cc (initial_column, initial_line): Remove. + All uses replaced by 0 and 1. + * src/scan-gram.l (gram_wrap): Redefine to avoid bug in flex 2.5.31 + that xlc complains about. + * src/scan-skel.l (skel_wrap): Likewise. + * data/c.m4 (b4_c_function_def): Look at __STDC_VERSION__ as well + as __STDC__. + * data/yacc.c (YYMODERN_C): New macro, which also looks at + __STDC_VERSION__. Use it everywhere instead of looking at + __STDC__ and __cplusplus. + +2005-10-10 Akim Demaille + + * examples/calc++/test: Be quiet unless VERBOSE. + +2005-10-05 Paul Eggert + + * data/c.m4 (yydestruct, yysymprint): + Use YYUSE instead of casting to void. + * data/glr.c (YYUSE): New macro. + (yyuserMerge, yyreportAmbiguity, yyreportSyntaxError): + Use it instead of rolling our own. + (YYLLOC_DEFAULT, YYCHK, YYDPRINTF, YY_SYMBOL_PRINT, YY_REDUCE_PRINT): + (YYCHK1): + Use /*CONSTCOND*/ to suppress lint warnings. + * data/lalr1.cc (YYLLOC_DEFAULT, YY_SYMBOL_PRINT, YY_REDUCE_PRINT): + (YY_STACK_PRINT): Use 'false' not '0'. + (YYUSE): New macro. + (yysymprint_, yydestruct_): Use it instead of rolling our own. + * data/yacc.c (YYUSE): New macro. + (YYCOPY, YYSTACK_RELOCATE, YYBACKUP, YYLLOC_DEFAULT): + (YYDPRINTF, YY_SYMBOL_PRINT, YY_STACK_PRINT, YY_REDUCE_PRINT): + (yyerrorlab): Use /*CONSTCOND*/ to suppress lint warnings. + + + * data/m4sugar/m4sugar.m4 (_m4_map): New macro. + (m4_map, m4_map_sep): Use it. Handle the empty list correctly. + +2005-10-04 Paul Eggert + + Undo the parts of the unlocked-I/O change that substituted + putc or puts for printf. This might hurt performance a bit, + but some people prefer the printf style. + * data/c.m4 (yysymprint): Prefer printf to puts and putc. + * data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): Remove. + All uses replaced by YYFPRINTF and YYDPRINTF. + * data/yacc.c: Likewise. + * lib/bitset.c (bitset_print): Likewise. + * lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer printf to + putc and puts. + * lib/lbitset.c (debug_lbitset): Likewise. + * src/closure.c (print_firsts, print_fderives): Likewise. + * src/gram.c (grammar_dump): Likewise. + * src/lalr.c (look_ahead_tokens_print): Likewise. + * src/output.c (escaped_output): Likewise. + (user_actions_output): Break apart two printfs. + * src/parse-gram.y (%printer): Prefer printf to putc and puts. + * src/reduce.c (reduce_print): Likewise. + * src/state.c (state_rule_look_ahead_tokens_print): Likewise. + * src/system.h: Include unlocked-io.h rathe than stdio.h. + + * data/glr.c (yyuserMerge, yyreportAmbiguity, yyreportSyntaxError): + Use assignments rather than casts-to-void to suppress + unused-variable warnings. This pacifies 'lint'. + * data/lalr1.cc (yysymprint_, yydestruct_): Use a call to suppress + unused-variable warnings. + +2005-10-03 Juan Manuel Guerrero + + * Makefile.am: DJGPP specific files added to EXTRA_DIST. + +2005-10-02 Paul Eggert + + Use unlocked I/O for a minor performance improvement on hosts like + GNU/Linux and Solaris that support unlocked I/O. The basic idea + is to use the gnlib unlocked-io module, and to prefer putc and + puts to printf when either will work (since the latter doesn't + come in an unlocked flavor). + * bootstrap (gnulib_modules): Add unlocked-io. + * data/c.m4 (yysymprint): Prefer puts and putc to printf. + * data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): New macros. + Prefer them to YYFPRINTF and YYDPRINTF if either will do, + and similarly for puts and putc and printf. + * data/yacc.c: Likewise. + * lib/bitset.c (bitset_print): Likewise. + * lib/bitset.h [USE_UNLOCKED_IO]: Include unlocked-io.h. + * lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer putc and puts + to printf. + * lib/lbitset.c (debug_lbitset): Likewise. + * src/closure.c (print_firsts, print_fderives): Likewise. + * src/gram.c (grammar_dump): Likewise. + * src/lalr.c (look_ahead_tokens_print): Likewise. + * src/output.c (escaped_output): Likewise. + (user_actions_output): Coalesce two printfs. + * src/parse-gram.y (%printer): Prefer putc and puts to printf. + * src/reduce.c (reduce_print): Likewise. + * src/state.c (state_rule_look_ahead_tokens_print): Likewise. + * src/system.h: Include unlocked-io.h rather than stdio.h. + + * data/lalr1.cc: Don't put an unmatched ' in a dnl comment, as + this confuses xgettext. + +2005-10-02 Akim Demaille + + * bootstrap (gnulib_modules): Add strverscmp. + * lib/.cvsignore: Add strverscmp.c, strverscmp.h. + * m4/.cvsignore: Add strverscmp.m4. + * src/parse-gram.y (%require): New token, new rule. + (version_check): New. + * src/scan-gram.l (%require): Adjust. + * tests/input.at (AT_REQUIRE): New. + Use it. + * doc/bison.texinfo (Require Decl): New. + (Calc++ Parser): Use %require. + +2005-10-02 Akim Demaille + + * data/location.cc: New. + +2005-10-02 Paul Eggert , + Akim Demaille + + Make sure -odir/foo.cc creates dir/location.hh etc. + * src/files.h (spec_outfile, parser_file_name, spec_name_prefix) + (spec_file_prefix, spec_verbose_file, spec_graph_file) + (spec_defines_file): Now const. + (dir_prefix): New. + (short_base_name): Remove. + * src/files.c: Adjust. + (dirname.h): Include. + (base_name): Don't prototype it. + (finput): Remove, duplicates gram_in. + (full_base_name, short_base_name): Replace by... + (all_but_ext, all_but_tab_ext): these. + (compute_base_names): Rename as... + (compute_file_name_parts): this. + Update to compute the new variables, including dir_prefix. + Adjust dependencies. + * src/output.c (prepare): Output them. + * src/reader.c: Adjust to use gram_in, not finput. + * src/scan-skel.l (@dir_prefix@): New. + +2005-10-02 Juan Manuel Guerrero + + * lib/subpipe.c: New function end_of_output_subpipe() added + to allow support for non-posix systems. This is a no-op function + for posix systems. + + * lib/subpipe.h: New function end_of_output_subpipe() added + to allow support for non-posix systems. This is a no-op function + for posix systems. + + * src/output.c (output_skeleton): Use end_of_output_subpipe() to + handle the lack of pipe/fork functionality on non-posix systems. + + * djgpp/Makefile.maint: DJGPP specific file. + + * djgpp/README.in: DJGPP specific file. + + * djgpp/config.bat: DJGPP specific configuration file. + + * djgpp/config.sed: DJGPP specific configuration file. + + * djgpp/config.site: DJGPP specific configuration file. + + * djgpp/config_h.sed: DJGPP specific configuration file. + + * djgpp/subpipe.c: DJGPP specific replacement file for lib/subpipe.c. + + * djgpp/subpipe.h: DJGPP specific replacement file for lib/subpipe.h. + +2005-10-02 Akim Demaille + + * data/location.cc: New, extract from... + * data/lalr1.cc: here. + (location.hh): Include it after the user prologue, in case the + filename type is defined by the user. + Forward declation location and position before the pre-prologue. + (yyresult_): Rename as... + (yyresult): this, it's a local variable, not an attribute. + * data/Makefile.am (dist_pkgdata_DATA): Adjust. + +2005-10-01 Akim Demaille + + * examples/extexi: Restore the #line generation. + +2005-09-30 Akim Demaille , + Alexandre Duret-Lutz + + Move the token type and YYSTYPE in the parser class. + * data/lalr1.cc (stack.hh, location.hh): Include earlier. + (parser::token): New, from the moved free definition of tokens. + (parser::semantic_value): Now a full definition instead of an + indirection to YYSTYPE. + (b4_post_prologue): No longer included in the header file, but + in the implementation file. + * doc/bison.texi (C+ Language Interface): Update. + * src/parse-gram.y: Support unary %define. + * tests/actions.at: Define global_tokens_and_yystype for backward + compatibility until we update the tests. + * tests/calc.at: Idem. + (first_line, first_column, last_line, last_column): Define for lalr1.cc + to simplify the code. + +2005-09-29 Paul Eggert + + Port to SunOS 4.1.4, which lacks strtoul and strerror. + Ah, the good old days! Problem reported by Peter Klein. + * bootstrap (gnulib_modules): Add strerror, strtoul. + * lib/.cvsignore: Add strerror.c, strtol.c, strtoul.c + * m4/.cvsignore: Add strerror.m4, strtol.m4, strtoul.m4. + +2005-09-29 Akim Demaille + + * data/c.m4 (b4_error_verbose_if): New. + * data/lalr1.cc: Use it. + (YYERROR_VERBOSE_IF): Remove. + (yyn_, yylen_, yystate_, yynerrs_, yyerrstatus_): Remove as + parser members, replaced by... + (yyn, yylen, yystate, yynerss, yyerrstatus): these parser::parse + local variables. + (yysyntax_error_): Takes the state number as argument. + (yyreduce_print_): Use the argument yyrule, not the former + attribute yyn_. + +2005-09-26 Paul Eggert + + * bootstrap (gnulib_modules): Add verify. + * lib/.cvsignore: Add verify.h. + * src/getargs.c: Use ARGMATCH_VERIFY rather than verify. + * src/system.h (verify): Remove. + Include verify.h instead. + * src/tables.c (tables_generate): Use new API for 'verify'. + +2005-09-21 Paul Eggert + + * tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Do not use + local variables whose names begin with 'yy'. + * tests/calc.at (_AT_DATA_CALC_Y): Likewise. + Trivial changes from Joel E. Denny. + + * bootstrap (gnulib_modules): Remove alloca. Bison doesn't need + it itself. + * src/main.c (main) [C_ALLOCA]: Don't flush alloca'ed memory; we + don't use alloca any more. + + * data/yacc.c [YYSTACK_USE_ALLOCA && !defined __GNUC__ && ! defined + __BUILTIN_VA_ARG_INCR && ! defined _AIX && ! defined _MSC_VER && + defined _ALLOCA_H]: Don't include ; not needed in this case. + * tests/torture.at (Exploding the Stack Size with Alloca): Adjust + to match yacc.c, to test more hosts. + +2005-09-20 Paul Eggert + + * data/yacc.c (YYSIZE_T): Reindent to make it clearer. This + doesn't affect behavior. + (YYSTACK_ALLOC) [YYSTACK_USE_ALLOCA]: Improve support for + Solaris, AIX, MSC. + (_STDLIB_H): Renamed from YYINCLUDED_STDLIB_H. All uses changed. + This works a bit better with glibc, if user code has already included + stdlib.h. + * doc/bison.texinfo (Bison Parser): Document that users can't + arbitrarily use malloc and free for other purposes. Document + that and might be included. + (Table of Symbols): Under YYSTACK_USE_ALLOCA, Don't claim that the + user must declare alloca. + + * HACKING (release): Forwarn the Translation Project about + stable releses. + +2005-09-20 Akim Demaille + + * data/glr.c: Use b4_token_enums, not b4_token_enums_defines. + +2005-09-19 Paul Eggert + + * data/yacc.c (YYSIZE_MAXIMUM): New macro. + (YYSTACK_ALLOC_MAXIMUM): Use it. + (yysyntax_error): New function. + (yyparse) [YYERROR_VERBOSE]: Don't leak memory indefinitely if + multiple syntax errors are reported, and alloca is being used. + Instead, reallocate buffers twice as big each time, so that + we waste at most half the allocated memory. Start with a small + (128-byte) buffer that will suffice in most cases anyway. + Use yysyntax_error to do most of the work. + + * doc/bison.texinfo (Error Reporting, Table of Symbols): + yynerrs is the number of errors reported, not the number of + errors encountered. + + * tests/glr-regression.at (Duplicated user destructor for lookahead): + Mark it as expected to fail. + Cast result of malloc; problem reported by twlevo@xs4all.nl. + * tests/actions.at, tests/calc.at, tests/glr-regression.at: + Don't start user-code symbols with "yy", to avoid name space problems. + +2005-09-19 Akim Demaille + + Remove the traits, failed experiment. + It never proved useful, and anyway because of the current + definition, it was not possible to have several specialization of + this traits, making it useless. + * data/lalr1.cc (yy:traits): Remove. + Inline its definitions in the parser class. + +2005-09-19 Akim Demaille + + * tests/atlocal.in (LIBS): Pass INTLLIBS to address failures on at + least Mac OSX with a /usr/local install of gettext. + +2005-09-19 Akim Demaille + + * data/lalr1.cc (yyparse): Rename yylooka and yyilooka as yychar + and yytoken for similarity with the other skeletons. + +2005-09-19 Akim Demaille + + * NEWS, configure.ac: update version number to 2.1a. + +2005-09-16 Paul Eggert + + * NEWS: Version 2.1. + + * NEWS: Remove notice of yytname change, since it was never in an + official release. + * data/glr.c (yydestroyGLRState): Rename local var to avoid shadowing + diagnostic. + * src/output.c (prepare): Likewise. + * data/lalr1.cc (YYERROR_VERBOSE_IF): New macro. + (yysyntax_error_): Use it to avoid GCC warning when YYERROR_VERBOSE + is not defined. This is an awful hack, but it's enough for now. + All callers changed. + * tests/glr-regression-at (make_value): Args are const pointers now, + to avoid GCC warning. + (Duplicated user destructor for lookahead): New test. Currently + skipped. It fails on my host but I'm not sure it'll always fail. + +2005-09-16 Akim Demaille + + * src/symtab.h (struct symbol): Declare the printer and destructor + as const, to avoid accidental calls to free. + (symbol_destructor_set, symbol_printer_set): Adjust. + * src/symtab.c: Adjust. + +2005-09-16 Akim Demaille + + * data/c.m4 (b4_token_enums): New. + (b4_token_defines): Rename as... + (b4_token_enums_defines): this. + (b4_token_defines): New, output only the #defines. + * data/yacc.c, data/glr.c: Adjust. + * data/lalr1.cc: Use b4_token_enums instead of b4_token_enums_defines. + * data/c.m4 (b4_yydestruct_generate, b4_yysymprint_generate): Define + as default values. + +2005-09-16 Akim Demaille + + * data/lalr1.cc (yylex_): Remove, inline its code. + (yyreport_syntax_error_): Remove, replaced by... + (yysyntax_error_): this which returns a string and leaves to the + caller the call to the users' error function. + (yylooka_, yyilooka_, yylval, yylloc, yyerror_range_, yyval, yyloc): + Move from members of the parser object... + (yylooka, yyilooka, yylval, yylloc, yyerror_range, yyval, yyloc): + to local variables of the parse function. + +2005-09-16 Akim Demaille + + * doc/bison.texinfo (Calc++ Parser): Don't promote defining YYEOF + since it's in Bison's name space. + +2005-09-15 Paul Eggert + + * data/glr.c (yyresolveValue): Add default case to pacify + gcc -Wswitch-default. Problem reported by twlevo@xs4all.nl. + + * NEWS: Document when yyparse started to return 2. + * doc/bison.texinfo (Parser Function): Document when yyparse + returns 2. + + * data/lalr1.cc: Revert part of previous change, as it's incompatible. + (b4_filename_type): Renamed back from b4_file_name_type. All uses + changed. + (class position): file_name -> filename (reverting). All uses changed. + +2005-09-14 Paul Eggert + + * examples/calc++/Makefile.am ($(calc_sources_generated)): Don't + do anything if $@ exists. This reverts part of the 2005-07-07 + patch. + +2005-09-11 Paul Eggert + + * Makefile.am (EXTRA_DIST): Do not distribute REFERENCES; it + contains obsolete information and isn't worth distributing as a + separate file anyway. + * data/glr.c [defined YYSETJMP]: Don't include . + (YYJMP_BUF, YYSETJMP, YYLONGJMP) [!defined YYSETJMP]: New macros. + All uses of jmp_buf, setjmp, longjmp changed to use these instead. + (yyparse): Abort if user code uses longjmp to throw an unexpected + value. + +2005-09-09 Paul Eggert + + * data/c.m4 (b4_identification): Define YYBISON_VERSION. + Suggested by twlevo@xs4all.nl. + + * data/glr.c (YYCHK1): Do not assume YYE is in range. + This avoids a diagnostic from gcc -Wswitch-enum. + Problem reported by twlevo@xs4all.nl. + + * doc/bison.texinfo: Don't use "filename", as per GNU coding + standards. Use "file name" or "file" or "name", depending on + the context. + (Invocation): The output of "bison hack/foo.y" goes to foo.tab.c, + not to hack/foo.tab.c. + (Calc++ Top Level): 2nd arg of main is not const. + * data/glr.c: b4_filename -> b4_file_name. + * data/lalr1.cc: Likewise. Also, b4_filename_type -> b4_file_name_type. + All uses changed. + (class position): filename -> file_name. All uses changed. + * data/yacc.c: b4_filename -> b4_file_name. + * lib/bitset.h: filename -> file_name in local vars. + * lib/bitset_stats.c: Likewise. + * src/files.c: Likewise. + * src/scan-skel.l ("@output ".*\n): Likewise. + * src/files.c (file_name_split): Renamed from filename_split. + * src/muscle_tab.c (muscle_init): Output b4_file_name, not b4_filename. + +2005-09-08 Paul Eggert + + * lib/.cvsignore: Add pipe-safer.c, stdio--.h, unistd--.h, + to accommodate latest gnulib. + + * tests/glr-regression.at (Duplicate representation of merged trees): + Add casts to pacify g++. Problem reported by twlevo@xs4all.nl. + + * bootstrap: Add comment as to why the AM_LANGINFO_CODESET hack is + needed. + +2005-08-26 Paul Eggert + + * data/glr.c (yydestroyGLRState): Renamed from yydestroyStackItem. + All uses changed. Invoke user destructor after an error during a + split parse (trivial change from Joel E. Denny). + + * tests/glr-regression.at + (User destructor after an error during a split parse): New test case. + Problem reported by Joel E. Denny in: + http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00029.html + +2005-08-25 Paul Eggert + + * README-cvs: Give URLs for recommended tools. + Mention Gzip version problem, and bootstrapping issues. + Remove troubleshooting section, as it's somewhat obsolete. + + * bootstrap (no_cache): New var, to accommodate different wget + variants. Use it instead of '-C off'. Problem reported by + twlevo@xs4all.nl. + + * data/glr.c (yydestroyStackItem): New function. + (yyrecoverSyntaxError, yyreturn): Use it to improve quality of + debugging information. Problem reported by Joel E. Denny. + +2005-08-25 Akim Demaille + + * tests/local.at (AT_COMPILE_CXX): Pass $LINKS too. + +2005-08-24 Paul Eggert + + * data/glr.c (yyrecoverSyntaxError, yyreturn): + Don't invoke destructor on unresolved entries. + * tests/glr-regression.at + (User destructor for unresolved GLR semantic value): New test case. + Problem reported by Joel E. Denny in: + http://lists.gnu.org/archive/html/bison-patches/2005-08/msg00016.html + +2005-08-21 Paul Eggert + + * lib/.cvsignore: Remove realloc.c, strncasecmp.c, xstrdup.c. + Add strnlen.c. + * m4/.cvsignore: Remove codeset.m4, gettext.m4, lib-ld.m4, + lib-prefix.m4, po.m4. + + * data/glr.c (yyreturn): Use "Cleanup:" rather than "Error:" + in yydestruct diagnostic, since it might not be an error. + Problem reported by Joel Denny near end of + . + * data/lalr1.cc (yyerturn): Likewise. + * data/yacc.c (yyreturn): Likewise. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Adjust to the above change. + + * src/files.c: Remove obsolete FIXME comment. + + * data/glr.c (YY_SYMBOL_PRINT): Append a newline, for consistency + with the other templates, and to fix bogus run-on messages such + as the one reported at the end of + . + All callers changed to avoid the newline. + (yyprocessOneStack): Output two lines rather than one, to accommodate + the above change. This changes the debug output format slightly. + + * data/glr.c (yyresolveValue): Fix redundant parse tree problem + reported by Joel E. Denny in + + (trivial change). + * tests/glr-regression.at (Duplicate representation of merged trees): + New test, from Joel E. Denny in: + . + * THANKS: Add Joel E. Denny. + + * configure.ac (AC_INIT): Bump to 2.0c. + +2005-07-24 Paul Eggert + + * NEWS: Version 2.0b. + + * Makefile.am (SUBDIRS): Put examples before tests, so that + "make check" doesn't finish with "All 1 tests passed". + + * tests/regression.at (Token definitions): Don't rely on + AT_PARSER_CHECK for data that contains backslashes. It currently + uses 'echo', and 'echo' isn't portable if its argument contains + backslashes. Problem found on OpenBSD 3.4. Also, do not assume + that the byte '\0xff' is not printable in the C locale; it is, + under OpenBSD 3.4 (!). Luckily, '\0x80' through '\0x9e' are + not printable, so use '\0x81' to test. + + * data/glr.c (YYOPTIONAL_LOC): Define even if it's not a recent + version of GCC, since the macro is used with non-GCC compilers. + + Fix core dump reported by Pablo De Napoli in + . + * tests/regression.at (Invalid inputs with {}): New test. + * src/parse-gram.y (token_name): Translate type before using + it as an index. + + * data/glr.c (ATTRIBUTE_UNUSED): Remove, since it infringes on + the user's name space. All uses changed to __attribute__ + ((__unused__)). + (yyFail, yyMemoryExhausted, yyreportAmbiguity): + Add __attribute__ ((__noreturn__)). + + * etc/clcommit: Remove. We weren't using it, and it failed + "make maintainer-distcheck". + * Makefile.maint: Merge from coreutils. + (CVS_LIST, CVS_LIST_EXCEPT): New macros. + (syntax-check-rules): Change list of rules as described below. + (sc_cast_of_alloca_return_value, sc_dd_max_sym_length): + (sc_file_system, sc_obsolete_symbols, sc_prohibit_atoi_atof): + (sc_prohibit_jm_in_m4, sc_root_tests, sc_tight_scope): + (sc_trailing_space): New rules. + (sc_xalloc_h_in_src): Remove. + (sc_cast_of_argument_to_free, sc_cast_of_x_alloc_return_value): + (sc_space_tab, sc_error_exit_success, sc_changelog): + (sc_system_h_headers, sc_sun_os_names, sc_unmarked_diagnostics): + (makefile-check, po-check, author_mark_check): + (makefile_path_separator_check, copyright-check): + Use grep -n, to make it easier to find violations. + Use CVS_LIST and CVS_LIST_EXCEPT. + (header_regexp, h_re): Remove. + (dd_c): New macro. + (sc_dd_max_sym_length, .re-list, news-date-check): New rules. + (my-distcheck): Use more-modern GCC flags. + (signatures, %.asc): Remove. + (rel-files, announcement): Remove signatures. + Restore old updating code, even though we don't use it, so + that we're the same as coreutils. + (alpha, beta, major): Depend on news-date-check. + Make the upload commands. + + * data/c.m4, data/lalr1.cc, data/yacc.c: Normalize white space. + * lib/abitset.h, lib/bbitset.h, lib/bitset.h: Likewise. + * lib/bitset_stats.c, lib/ebitset.h, lib/lbitset.c: Likewise. + * lib/libitset.h, lib/timevar.c, lib/vbitset.h: Likewise. + * src/Makefile.am, src/gram.c, src/muscle_tab.h: Likewise. + * src/parse-gram.y, src/system.h, src/tables.c, src/vcg.c: Likewise. + * src/vcg_defaults.h, tests/cxx-type.at, tests/existing.at: Likewise. + * tests/sets.at: Likewise. + + * data/m4sugar/m4sugar.m4: Sync from Autoconf, except that + we comment out the Autoconf version number. + * doc/bison.texinfo (Calc++ Scanner): Don't use atoi, as + it's error-prone and "make maintainer-distcheck" rejects it. + + * lib/subpipe.c: Include without checking for HAVE_FCNTL_H. + Indent calls to "error" to pacify "make maintainer-distcheck", + when the calls are not intended to be translated. + * m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't check for fcntl.h. + + * src/Makefile.am (DEFS): Use +=, to pacify + "make maintainer-distcheck". + (bison_SOURCES): Add scan-skel.h. + (sc_tight_scope): New rule, from coreutils. + + * src/files.c (src_extension, header_extension): + Now static, not extern. + * src/getargs.c (short_options): Likewise. + * src/muscle_tab.c (muscle_table): Likewise. + * src/parse-gram.y (current_class, current_type, current_prec): + Likewise. + * src/reader.c (grammar_end, previous_rule_end): Likewise. + * src/getargs.h: Redo comments to pacify "make maintainer-distcheck". + * src/main.c (main): Cast bindtextdomain and textdomain calls to + void, to avoid warning when NLS is disabled. + * src/output.c: Include scan-skel.h. + (scan_skel): Remove decl, since scan-skel.h does this. + (output_skeleton): + Indent calls to "error" to pacify "make maintainer-distcheck". + * src/print_graph.c: Don't include , as system.h does this. + * src/reader.h (gram_end, gram_lineno): New decls to pacify + "make maintainer-distcheck". + * src/scan-skel.l (skel_lex, skel_get_lineno, skel_get_in): + (skel_get_out, skel_get_leng, skel_get_text, skel_set_lineno): + (skel_set_in, skel_set_out, skel_get_debug, skel_set_debug): + (skel_lex_destroy, scan_skel): Move these decls to... + * src/scan-skel.h: New file. + * src/uniqstr.c (uniqstr_assert): + Indent calls to "error" to pacify "make maintainer-distcheck". + + * tests/Makefile.am ($(srcdir)/package.m4): Use $(VAR), + not @VAR@. + + * tests/torture.at: Revamp to avoid misuse of atoi that + "make maintainer-distcheck" complained about. + + * examples/extexi (message): Don't print a message more than once, + and omit line-number decoration that makes Emacs compile think + that informative messages are worth worrying about. + +2005-07-22 Paul Eggert + + * configure.ac: Update version number. + + * Makefile.am (SUBDIRS): Add examples; somehow this got removed + accidentally. + * examples/calc++/calc++-parser.yy: Remove from CVS, as it's + autogenerated by the maintainer. + * examples/calc++/.cvsignore: Add *.yy. + + * lib/bitset.c (bitset_alloc): Don't cast xcalloc result. + * lib/bitset_stats.c (bitset_stats_init): Likewise. + * lib/bitsetv.c (bitsetv_alloc): Likewise. + + * po/POTFILES.in: Add lib/xalloc-die.c; remove lib/xmalloc.c. + + * src/relation.c (relation_transpose): Rewrite to avoid bogus complaint + from maintainer-distcheck about casting the argument of 'free'. + + * NEWS: Mention recent yytname changes. + * THANKS: Add Anthony Heading, twlevo@xs4all.nl. + + * bootstrap: For translations that have not yet been upgraded to + the new runtime-po domain, prime the pump by extracting the + relevant strings from the obsolete translations. This code can be + removed once the bison-runtime domain has been translated by each + team. + + * src/scan-gram.l (.): Don't double-quote token names, + now that token names are already quoted. + + Fix problem reported by Anthony Heading. + * data/glr.c (YYTOKEN_TABLE): New macro. + (yytname): Define if YYTOKEN_TABLE. + * data/yacc.c (YYTOKEN_TABLE, yytname): Likewise. + * data/lalr1.cc (YYTOKEN_TABLE, yytname_): Likewise. + (YYERROR_VERBOSE): Define the same way the other skeletons do. + * src/output.c (prepare_symbols): Output token_table_flag. + +2005-07-21 Paul Eggert + + * data/glr.c (yyinitGLRStack, yyreturn): Don't call malloc + again if the first call fails. + + * data/glr.c (yytnamerr): New function. + (yyreportSyntaxError): Use it to dequote most string literals. + * data/lalr1.c (yytname_): Renamed from yyname_, for compatibility + with other skeletons. All uses changed. + (yytnameerr_): New function. + (yyreport_syntax_error): Use it to dequote most string literals. + * data/yacc.c (yytnamerr): New function. + (yyerrlab): Use it to decode most string literals. + * doc/bison.texinfo (Decl Summary, Calling Convention): + Clarify quoting convention of yytname. + * src/output.c (prepare_symbols): Quote all names. This undoes + the 2005-04-17 change, which is now accomplished (mostly) via + changes in the parsers as described above. + * tests/regression.at (Token definitions, Web2c Actions): + Undo most 2005-04-17 change here, too. + +2005-07-20 Paul Eggert + + Fix more problems reported by twlevo@xs4all.nl. + * tests/cxx-type.at: Don't pipe output of ./types through sed to + remove trailing spaces. This loses the exit status of ./types, + and isn't needed since ./types shouldn't be emitting trailing + spaces. + * data/glr.c (yyreturn): Don't pop stack if yyinitStateSet failed, + as the stack isn't valid in that case. + + * src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out): + (gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in): + (gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy): + Add declarations to pacify "gcc -Wmissing-prototypes" when flex 2.5.31 + is used. + * src/scan-skel.l (skel_get_lineno, skel_get_in, skel_get_out): + (skel_get_leng, skel_get_text, skel_set_lineno, skel_set_in): + (skel_set_out, skel_get_debug, skel_set_debug, skel_lex_destroy): + Likewise. + + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Work even with + overly-picky compilers that reject 'char *foo = "bar";'. + + * src/symtab.c (SYMBOL_ATTR_PRINT, symbol_print): Direct output + to FILE * parameter, not to stderr. This fixes a typo introduced + in the 2005-07-12 change. + + * lib/subpipe.c (create_subpipe): Rewrite slightly to avoid + warnings from GCC 4. + + * data/glr.c (yyexpandGLRStack, yyaddDeferredAction, yyexpandGLRStack): + (yyglrShiftDefer, yysplitStack): + Remove unused parameters b4_pure_formals. All uses changed. + (yyglrShift): Remove unused parameters b4_user_formals. + All uses changed. + (yyglrReduce): Removed unused parameter yylocp. All uses changed. + +2005-07-18 Paul Eggert + + Destructor cleanups and regularization among the three skeletons. + * NEWS: Document the behavior changes. + * data/glr.c (yyrecoverSyntaxError): Don't bother to pop the + stack before failing, as the cleanup code will do it for us now. + * data/lalr1.cc (yyerrlab): Likewise. + * data/glr.c (yyparse): Pop everything off the stack before + freeing it, so that destructors get called properly. + * data/lalr1.cc (yyreturn): Likewise. + * data/yacc.c (yyreturn): Pop and destroy the start symbol, too. + This is more consistent. + * doc/bison.texinfo (Destructor Decl): Mention more reasons + why destructors might be called. 1.875 -> 2.1. + (Destructor Decl, Decl Summary, Table of Symbols): + Some English-language cleanups for %destructor. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): + Add output line for destructor of start symbol. + * tests/calc.at (AT_CHECK_CALC): Add one to line counts, + because of that same extra output line. + + * NEWS: Document minor wording changes in diagnostics of + Bison-generated parsers. + * data/glr.c (yyMemoryExhausted): Renamed from yyStackOverflow. + Remove unused formals. All uses changed. + (yyreportAmbiguity): "ambiguity detected" -> "syntax is ambiguous". + (yyparse): Rename yyoverflowlab to yyexhaustedlab. + * data/yacc.c (yyparse): "parser stack overflow" -> "memory exhausted". + Rename yyoverflowab to yyexhaustedlab. + When memory exhaustion occurs during syntax-error reporting, + report it separately rather than in a single diagnostic; this + eases translation. + * doc/bison.texinfo (Memory Management): Renamed from Stack Overflow. + (Memory Exhausted): Renamed from Parser Stack Overflow. + Revamp wording slightly to prefer "memory exhaustion". + * tests/actions.at: "parser stack overflow" -> "memory exhausted". + + * data/c.m4 (b4_yysymprint_generate): Use YYFPRINTF, not fprintf. + + Add i18n support to the GLR skeleton. Partially fix the C++ + skeleton; a C++ expert needs to finish this. Remove debugging + msgids; there's little point to having them translated, since they + can be understood only by someone who can read the + (English-language) source code. + + Generate runtime-po/bison-runtime.pot automatically, so that we + don't have to worry about garbage getting in that file. We'll + make sure after the next official release that old msgids don't + get lost. See + . + + * runtime-po/Makefile.in.in, runtime-po/bison-runtime.pot: Remove. + Now auto-generated. + * PACKAGING: Don't claim that Gawk, GCC, Perl use this method yet. + Fix typos in explanations of the runtime file. + * bootstrap: Change gettext keyword from YYI18N to YY_. + Use standard Makefile.in.in in runtime-po, since we'll arrange + for backward-compatible bison-runtime.po files in a different way. + * data/glr.c (YY_): New macro, from yacc.c. + (yyuserAction, yyreportAmbiguity, yyreportSyntaxError, yyparse): + Translate messages intended for users. + (yyreportSyntaxError): Change "virtual memory" to "memory" to match + the wording in the other skeletons. We don't know that the memory + is virtual. + * data/lalr1.cc (YY_): Renamed from _. All uses changed. + Use same method that yacc.c uses. + Don't translate debugging messages. + (yy::yyreport_syntax_error): Put in a FIXME for the i18n stuff; + it doesn't work (yet), and requires C++ expertise to fix. + * data/yacc.c (YY_): Renamed from YY18N. All uses changed. + Move defn to a more logical place, to be consistent with other + skeletons. + Don't translate debugging messages. + Don't assume line numbers fit in unsigned int; use unsigned long fmts. + * doc/bison.texinfo: Mention . Change glibc cross reference + to gettext cross reference. Add indexing terms. Mention YYENABLE_NLS. + * runtime-po/POTFILES.in: Add data/glr.c, data/lalr1.cc. + + Fix yyerror / yylex test glitches noted by twlevo@xs4all.nl. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Have yyerror return + void, not int. + * tests/glr-regression.at (Badly Collapsed GLR States): + Likewise. + (Improper handling of embedded actions and dollar(-N) in GLR parsers): + yylex should return 0 at EOF rather than aborting. + + Improve tests for stack overflow in GLR parser. + Problem reported by twlevo@xs4all.nl. + * data/glr.c (struct yyGLRStack): Remove yyerrflag member. + All uses removed. + (yyStackOverflow): Just longjmp, but with value 2 so that caller + can handle the problem. + (YYCHK1): Use goto (a la yacc.c) rather than setting a flag. + (yyparse): New local variable yyresult to record the result. + Use result of setjmp to set it, rather than storing itinto + struct. + (yyDone): Remove label. + (yyacceptlab, yyabortlab, yyoverflowlab, yyreturn): New labels, + to mimic yacc.c. Do not discard lookahead if it's EOF (possible + if YYABORT is used). + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Exit with + yyparse status; put status > 1 into diagnostic. + Check that status==2 works. + * tests/calc.at, tests/cxx-type.at, tests/glr-regression.at: + Use exit status 3 for failure to open (which shouldn't happen). + +2005-07-17 Paul Eggert + + * tests/conflicts.at (%nonassoc and eof): Don't exit with status + 1 on syntax error; just let yyparse do its thing. + * tests/glr-regression.at (Badly Collapsed GLR States): Likewise. + * tests/torture.at (AT_DATA_STACK_TORTURE): Likewise. + (Exploding the Stack Size with Alloca): + (Exploding the Stack Size with Malloc): + Expect exit status 2, not 1, since the parser is supposed to blow + its stack. Problem reported by twlevo@xs4all.nl. + + * data/glr.c (yyparse): Don't assume that the initial calls + to YYMALLOC succeed; in that case, yyparse incorrectly returned 0. + Print a stack-overflow message and fail instead. + Initialize the line-number information before creating the stack, + so that the stack-overflow message can report line zero safely. + +2005-07-14 Paul Eggert + + Fix problems reported by twlevo@xs4all.nl. + * data/glr.c (YYSTACKEXPANDABLE): Don't define if already defined. + (yyuserMerge): Provide a default case if b4_mergers is empty. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Define YYSTACKEXPANDABLE. + * tests/glr-regression.at + (Improper handling of embedded actions and dollar(-N) in GLR parsers): + Add casts to pacify C++ compilers. + * tests/glr-regression.at (Improper merging of GLR delayed action + sets): Declare yylex before using it. + * tests/Makefile.am (maintainer-check-g++): Fix a stray + $(GXX) that escaped the renaming of GXX to CXX. Remove bogus + test for valgrind; valgrind is independent of g++. + (maintainer-check-posix): Add _POSIX2_VERSION=200112, to check + for compatibility with POSIX 1003.1-2001 (if running coreutils). + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Port to stricter C++. + Use a destructor, so that we can expand the stack. Change + YYSTYPE to char * so that we can free it. Cast result of malloc. + +2005-07-13 Paul Hilfinger + + * data/glr.c (yyuserAction): Fix uninitialized variable that caused + a valgrind failure. Problem reported by twlevo@xs4all.nl. + +2005-07-13 Paul Eggert + + * PACKAGING: New file, suggested by Bruno Haible and taken from + similar wording in gettext's PACKAGING file. + * NEWS: Mention PACKAGING. + * Makefile.am (EXTRA_DIST): Add PACKAGING. + +2005-07-12 Paul Eggert + + * NEWS: Document recent i18n improvements. + * bootstrap: Get runtime translations into runtime-po. + Create runtime-po files automatically, if possible. + * configure.ac: Invoke BISON_I18N, so that we eat our own dog food. + * data/yacc.c: Rewrite inclusion of so that ENABLE_NLS + does not infringe on the user's name space. + (YYENABLE_NLS): Renamed from ENABLE_BISON_NLS. + * doc/bison.texinfo (Internationalization): Revamp the English + and Texinfo syntax a bit, to try to make it clearer. + (Bison Options, Option Cross Key): Mention --print-localedir. + * m4/bison-i18n.m4 (BISON_I18N): Rename ENABLE_BISON_NLS to + YYENABLE_NLS. Quote a bit more. + * runtime-po/.cvsignore: New file. + * runtime-po/Makefile.in.in (mostlyclean): Remove *.old.pot. + * runtime-po/Rules-quot: Remove; now created by bootstrap. + * runtime-po/quot.sed: Likewise. + * runtime-po/boldquot.sed: Likewise. + * runtime-po/en@quot.header: Likewise. + * runtime-po/en@boldquot.header: Likewise. + * runtime-po/insert-header.sin: Likewise. + * runtime-po/remove-potcdate.sin: Likewise. + * runtime-po/Makevars: Likewise. + * runtime-po/LINGUAS: Likewise. + * runtime-po/de.po: Likewise; we will rely on the translation project + to maintain this, so "bootstrap" should get it. + * src/getarg.c (PRINT_LOCALEDIR_OPTION): Let the C compiler determine + its value. + * src/main.c (main): Bind the bison-runtime domain, too. + +2005-07-12 Bruno Haible + + * data/yacc.c: Include when NLS is enabled. + (YYI18N): Renamed from _. Use dgettext when NLS is enabled. + * po/POTFILES.in: Remove autogenerated file src/parse-gram.c. + * runtime-po: New directory. + * runtime-po/Makefile.in.in: New file, copied from po/, with modified + $(DOMAIN).pot-update rule, so that old messages are never dropped. + * runtime-po/Rules-quot: New file, copied from po/. + * runtime-po/quot.sed: Likewise. + * runtime-po/boldquot.sed: Likewise. + * runtime-po/en@quot.header: Likewise. + * runtime-po/en@boldquot.header: Likewise. + * runtime-po/insert-header.sin: Likewise. + * runtime-po/remove-potcdate.sin: Likewise. + * runtime-po/Makevars: New file. + * runtime-po/POTFILES.in: New file. + * runtime-po/LINGUAS: New file. + * runtime-po/bison-runtime.pot: New file. + * runtime-po/de.po: New file. + * m4/bison.m4: New file. + * Makefile.am (SUBDIRS): Add runtime-po. + (aclocaldir, aclocal_DATA): New variables. + * configure.ac: Add AC_CONFIG_FILES of runtime-po/Makefile.in. + Define aclocaldir. + * src/getargs.c (usage): Document --print-localedir option. + (PRINT_LOCALEDIR_OPTION): New enum item. + (long_options): Add --print-localedir option. + (getargs): Handle --print-localedir option. + * doc/bison.texinfo (Bison Parser): Remove paragraph about _(). + (Internationalization): New section. + +2005-07-12 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_print): Swap the arguments, + for consistency with the rest of the code. + * src/symlist.h, src/symlist.c (symbol_list_print): Ditto. + Add separators. + +2005-07-12 Akim Demaille + + * src/parse-gram.y: Use %printer instead of YYPRINT. + +2005-07-12 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_print): New. + * src/symlist.h, src/symlist.c (symbol_list_print): New. + * src/symlist.c (symbol_list_n_type_name_get): Report the culprit. + +2005-07-12 Akim Demaille + + * data/glr.c (b4_syncline): Fix (swap) the definitions of + b4_at_dollar and b4_dollar_dollar. + +2005-07-11 Paul Eggert + + * doc/bison.texinfo (Mystery Conflicts): Add reference to DeRemer + and Pennello's paper. + +2005-07-09 Paul Eggert + + * data/yacc.c (yyparse): Undo previous patch. Instead, + set yylsp[0] and yyvsp[0] only if the initial action + sets yylloc and yylval, respectively. + + * data/yacc.c (yyparse): In the initial action, set + yylsp[0] and yyvsp[0] rather than yylloc and yylval. + This avoids the use of undefined variables if the initial + action does not set yylloc and/or yylval. + +2005-07-07 Paul Eggert + + * examples/calc++/calc++-driver.cc, examples/calc++/calc++-driver.hh: + * examples/calc++/calc++-scanner.ll, examples/calc++/calc++.cc: + Remove from CVS. These files are automatically generated. + * examples/extexi: Clarify that this file is now part of Bison, + not GNU M4, and that it works with any POSIX-compatible Awk. + * examples/calc++/Makefile.am (run_extexi): Remove; not used. + ($(calc_extracted)): Renamed from $(calc_sources_extracted), + so that we also get calc++-parser.yy. Geneate it. + Use $(AWK), not gawk, since any conforming Awk will do. + Put comment before action, since older 'make' can't handle comment + in action. + $(BUILT_SOURCES): List all built sources, not just some of them. + $(MAINTAINERCLEANFILES): Remove *.stamp, and all built sources. + $($(srcdir)/calc++-parser.stamp): Work even if POSIXLY_CORRECT. + $($(calc_sources_generated)): Remove unnecessary test for existence + of target. (This had a shell syntax error anyway; a stray "x".) + (calc_extracted): List $(srcdir)/calc++-parser.yy, not + calc++-parser.yy. + * examples/.cvsignore, examples/calc++/.cvsignore: New files. + + * bootstrap (gnulib_modules): Add gettext, now that it's no longer + implied by the other modules. + +2005-07-06 Akim Demaille + + Bind examples/calc++ to the package. + * examples/calc++/Makefile: Remove, replaced by... + * examples/calc++/Makefile.am: ... this new file. + * examples/calc++/test: Remove input. + * examples/calc++/compile: Remove. + * examples/Makefile.am: New. + * configure.ac, Makefile.am: Adjust. + * doc/Makefile.am (clean-local): New, for more recent texi2dvis. + +2005-07-05 Paul Eggert + + * data/glr.c (yyFail): Drastically simplify; since the format argument + never had any % directives, we can simply pass it to yyerror. + (yyparse): Use "t a; a=b;" rather than "t a = b;" when a will + be modified later, as that is the usual style in glr.c. + Problems reported by Paul Hilfinger. + + Rewrite GLR parser to catch more buffer overrun, storage exhaustion, + and size overflow errors. + * data/glr.c: Include etc. after user prolog, not before, + in case the user prolog sets feature-test macros like _GNU_SOURCE. + (YYSIZEMAX): New macro. + (yystpcpy): New function, taken from yacc.c. + (struct yyGLRStack.yyspaceLeft): Now size_t, not int. + (yyinitGLRStack, yyfreeGLRstack): Remove unnecessary forward decls, + so that we don't have to maintain their signatures. + (yyFail): Check for buffer overflow, by using vsnprintf rather + than vsprintf. Allocate a bigger buffer if possible. + Report an error if buffer allocation fails. + (yyStackOverflow): New function. + (yyinitStateSet, yyinitGLRStack): Return a boolean indicating whether + the initialization was successful. It might fail if storage was + exhausted. + (yyexpandGLRStack): Add more checks for storage allocation failure. + Use yyStackOverflow to report failures. + (yymarkStackDeleted, yyglrShift, yyglrShiftDefer, yydoAction): + (yysplitStack, yyprocessOneStack, yyparse, yypstack): + Don't assume stack number fits in int. + (yysplitStack): Check for storage allocation failure. + (yysplitStack, yyprocessOneStack): Add pure_formals, so that we + can print diagnostics on storage allocation failure. All callers + changed. + (yyresolveValue): Use yybool for boolean. + (yyreportSyntaxError): Check for size-calculation overflow. + This code is taken from yacc.c. + (yyparse): Check for storage allocation errors when allocating + the initial stack. + +2005-07-05 Akim Demaille + + Extract calc++ from the documentation. + * doc/bison.texinfo (Calc++): Add the extraction marks. + * examples/extexi: New, from the aborted GNU Programming 2E. + Separate the different paragraph of a file with empty lines. + * examples/Makefile: Use it to extract the whole calc++ example. + +2005-06-24 Akim Demaille + + * doc/bison.texinfo (C++ Parser Interface): Use defcv to define + class typedefs. + +2005-06-22 Akim Demaille + + * doc/bison.texinfo (C++ Language Interface): First stab. + (C++ Parsers): Remove. + +2005-06-22 Akim Demaille + + * data/lalr1.cc (yylex_): Honor %lex-param. + +2005-06-22 Akim Demaille + + Start a set of simple examples. + * examples/calc++/Makefile, examples/calc++/calc++-driver.cc, + * examples/calc++/calc++-driver.hh, + * examples/calc++/calc++-parser.yy, + * examples/calc++/calc++-scanner.ll, examples/calc++/calc++.cc, + * examples/calc++/compile, examples/calc++/test: New. + +2005-06-09 Paul Eggert + + * data/yacc.c (malloc, free) [defined __cplusplus]: Wrap inside + extern "C" {}. This fixes a problem reported by Paul Hilfinger, + which stems from the 2005-05-27 patch. + +2005-06-06 Paul Hilfinger + + * data/glr.c: Modify treatment of unused parameters to permit use + of g++ (which doesn't allow __attribute__ ((unused)) for parameters). + +2005-05-30 Paul Eggert + + Fix infringement on user name space reported by Janos Zoltan Szabo. + * data/yacc.c (yyparse): strlen -> yystrlen. + +2005-05-30 Akim Demaille + + * data/lalr1.cc (_): New. + Translate the various messages. + +2005-05-27 Paul Eggert + + Fix infringement on user name space reported by Bruno Haible. + * data/yacc.c (YYSIZE_T): Define first, so that later decls can use it. + Prefer GCC's __SIZE_TYPE__ if available, so that we don't infringe on + the user's name space. + (alloca): Include to get it, if it's not built in. + (YYMALLOC, YYFREE): Define only if needed. + (malloc, free): Declare, but only if needed, as this infringes on + the user name space. + +2005-05-25 Paul Eggert + + Fix BeOS, FreeBSD, MacOS porting problems reported by Bruno Haible. + * lib/bitset.c (bitset_print): Don't assume size_t can be printed + with %d format. + * lib/ebitset.c (min, max): Undef before defining. + * lib/vbitset.c (min, max): Likewise. + * lib/subpipe.c (create_subpipe): Save local variables in case + vfork clobbers them. + +2005-05-24 Bruno Haible + + * tests/synclines.at (AT_SYNCLINES_COMPILE): Add support for the + error message syntax used by gcc-4.0. + +2005-05-23 Paul Eggert + + * README: Mention m4 1.4.3. Remove obsolete advice about + Sun Forte Developer 6 update 2, VMS, and MS-DOS. + + * bootstrap: Remove workaround for problem I encountered with + gettext 0.14.1; it seems to be fixed now. + +2005-05-22 Paul Eggert + + * NEWS: Version 2.0a. + + * src/files.c: Include "stdio-safer.h"; this fixes a typo in + the previous change. + + Various maintainer cleanups. + * .cvsignore: Add a.exe, a.out, b.out,, conf[0-9]*, confdefs*, + conftest*, for benefit of CVS commands run at the same time as + "configure". Add build-aux, since "bootstrap" now creates it and + its subfiles. + * Makefile.cfg (move_if_change): Remove. + * Makefile.maint: Remove the update stuff; we now use "bootstrap". + (ftp-gnu, www-gnu, move_if_change, local_updates, update): + (po_repo, do-po-update, po-update, wget_files, get-targets): + (config.guess-url_prefix, config.sub-url_prefix): + (ansi2knr.c-url_prefix, texinfo.tex-url_prefix): + (standards.texi-url_prefix, make-stds.texi-url_prefix, taget, url): + ($(get-targets), cvs-files, automake_repo, wget-update, cvs-update): + Remove. + * configure.ac (AC_CONFIG_AUX_DIR): Change from config to build-aux; + this is now the recommended name. + * config/.cvsignore: Remove config.guess, config.rpath, config.sub, + depcomp, install-sh, mdate-sh, missing, mkinstalldirs, texinfo.tex, + ylwrap. These files now go into build-aux. + * config/move-if-change: Remove. + * config/prev-version.txt: Bump from 1.75 to 2.0. + + * bootstrap: Add stdio-safer, unistd-safer modules. + Remove m4/glibc2.m4 (introduced by latest gnulib, but + we don't need it). + * lib/.cvsignore: Add dup-safer.c, fd-safer.c, + fopen-safer.c, stdio-safer.h, unistd-safer.h. + * lib/subpipe.c: Include "unistd-safer.h". + (create_subpipe): Make sure all the newly-created + file descriptors are > 2, so that diagnostics don't + get sent down them (which might cause Bison to hang, in theory). + * m4/.cvsignore: Add stdio-safer.m4, unistd-safer.m4. + * src/files.c (xfopen): Use fopen_safer, not fopen. + + * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Port + yesterday's yacc.c fix. + +2005-05-21 Paul Eggert + + * data/glr.c, data/lalr1.cc: Update copyright date. + + Fix a destructor bug reported by Wolfgang Spraul in + . + * data/yacc.c (yyabortlab): Don't call destructor, and + don't set yychar to EMPTY. + (yyoverflowlab): Don't call destructor. + (yyreturn): Call destructor, if yychar is neither YYEOF nor YYEMPTY. + * tests/calc.at (AT_CHECK_CALC): Expect one fewer output lines, + since we no longer output the message "discarding lookahead token + end of input ()". + +2005-05-20 Paul Hilfinger + + * data/glr.c (YY_SYMBOL_PRINT): Don't print newline at end to + fix a small glitch in debugging output. + (yyprocessOneStack, yyrecoverSyntaxError, yyparse): Print newline + after YY_SYMBOL_PRINT where needed. + + (struct yyGLRState): Add some comments. + (struct yySemanticOption): Add some comments. + (union yyGLRStackItem): Add comment. + + (yymergeOptionSets): Correct this to properly perform the union, + avoiding infinite reported by Michael Rosien. + Update comment. + + * tests/glr-regression.at: Add test for GLR merging error reported + by M. Rosien. + +2005-05-13 Paul Eggert + + * COPYING, ChangeLog, GNUmakefile, HACKING, Makefile.am, + Makefile.cfg, Makefile.maint, NEWS, README, README-alpha, + README-cvs, TODO, bootstrap, configure.ac, data/Makefile.am, + data/README, data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c, + data/m4sugar/m4sugar.m4, doc/Makefile.am, doc/bison.texinfo, + doc/fdl.texi, doc/gpl.texi, doc/refcard.tex, lib/Makefile.am, + lib/abitset.c, lib/abitset.h, lib/bbitset.h, lib/bitset.c, + lib/bitset.h, lib/bitset_stats.c, lib/bitset_stats.h, + lib/bitsetv-print.c, lib/bitsetv-print.h, lib/bitsetv.c, + lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/get-errno.c, + lib/get-errno.h, lib/lbitset.c, lib/lbitset.h, lib/libiberty.h, + lib/main.c, lib/subpipe.c, lib/subpipe.h, lib/timevar.c, + lib/timevar.def, lib/timevar.h, lib/vbitset.c, lib/vbitset.h, + lib/yyerror.c, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4, m4/timevar.m4, + m4/warning.m4, src/LR0.c, src/LR0.h, src/Makefile.am, src/assoc.c, + src/assoc.h, src/closure.c, src/closure.h, src/complain.c, + src/complain.h, src/conflicts.c, src/conflicts.h, src/derives.c, + src/derives.h, src/files.c, src/files.h, src/getargs.c, + src/getargs.h, src/gram.c, src/gram.h, src/lalr.c, src/lalr.h, + src/location.c, src/location.h, src/main.c, src/muscle_tab.c, + src/muscle_tab.h, src/nullable.c, src/nullable.h, src/output.c, + src/output.h, src/parse-gram.c, src/parse-gram.h, + src/parse-gram.y, src/print.c, src/print.h, src/print_graph.c, + src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c, + src/reduce.h, src/relation.c, src/relation.h, src/scan-gram.l, + src/scan-skel.l, src/state.c, src/state.h, src/symlist.c, + src/symlist.h, src/symtab.c, src/symtab.h, src/system.h, + src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h, + src/vcg.c, src/vcg.h, src/vcg_defaults.h, tests/Makefile.am, + tests/actions.at, tests/c++.at, tests/calc.at, tests/conflicts.at, + tests/cxx-type.at, tests/existing.at, tests/glr-regression.at, + tests/headers.at, tests/input.at, tests/local.at, tests/output.at, + tests/reduce.at, tests/regression.at, tests/sets.at, + tests/synclines.at, tests/testsuite.at, tests/torture.at: + Update FSF postal mail address. + +2005-05-11 Paul Eggert + + * tests/local.at (AT_COMPILE_CXX): Treat LDFLAGS like AT_COMPILE does. + Problem reported by Ralf Menzel. + +2005-05-01 Paul Eggert + + * tests/actions.at: Test that stack overflow invokes destructors. + From Marcus Holland-Moritz. + * data/yacc.c (yyerrlab): Move the code that destroys the stack + from here.... + (yyreturn): to here. That way, destructors are called properly + even if the stack overflows, or the user calls YYACCEPT or + YYABORT. Stack-overflow problem reported by Marcus Holland-Moritz. + (yyoverflowlab): Destroy the lookahead. + +2005-04-24 Paul Eggert + + * data/yacc.c (YYSTACK_ALLOC_MAXIMUM): Add more-descriptive comment. + +2005-04-17 Paul Eggert + + * NEWS: Bison-generated C parsers no longer quote literal strings + associated with tokens. + * src/output.c (prepare_symbols): Don't escape strings, + since users don't want to see C escapes. + * tests/calc.at (AT_CHECK_CALC): Adjust to lack of quotes + in diagnostics. + * tests/input.at (Torturing the Scanner): Likewise. + * tests/regression.at (Token definitions, Web2c Actions): Likewise. + +2005-04-16 Paul Eggert + + * tests/torture.at (AT_INCREASE_DATA_SIZE): Skip the test if + the data size is known to be too small and we can't increase it. + This works around an HP-UX 11.00 glitch reported by Andrew Benham. + +2005-04-15 Paul Eggert + + * src/parse-gram.y: Include quotearg.h. + (string_as_id): Quote $1 before using it as a key, since the + lexer no longer quotes it for us. + (string_content): Don't strip quotes, since lexer no longer + quotes it for us. + * src/scan-gram.l: Include quotearg.h. + ("\""): Omit quote. + ("'"): Quote symbol before using it as + a key, since the rest of the lexer doesn't quote it. + * src/symtab.c (symbol_get): Don't quote symbol; caller does it now. + * tests/regression.at (Token definitions): Check for backslashes + in token strings. + + * data/yacc.c (YYSTACK_ALLOC_MAXIMUM): New macro. + (YYSIZE_T): Define to unsigned long int when using an older compiler. + (yyparse): Revamp code to generate long syntax error message, to + make it easier to translate, and to avoid problems with arithmetic + overflow. Change "virtual memory" to "memory" in diagnostic, since + we don't know whether the memory is virtual. + +2005-04-13 Paul Eggert + + * NEWS: Bison-generated C parsers now use the _ macro to + translate strings. + * data/yacc.c (_) [!defined _]: New macro. + All English strings wrapped inside this macro. + * doc/bison.texinfo (Bison Parser): Document _. + * po/POTFILES.in: Include src/parse-gram.c, since it now + includes translateable strings that parse-gram.y doesn't. + +2005-04-12 Paul Eggert + + * src/symtab.c (symbol_make_alias): Call symbol_type_set, + reverting the 2004-10-11 change to this function. + (symbol_check_alias_consistency): Don't call symbol_type_set + if the type name is already correct. + * tests/input.at (Typed symbol aliases): New test, from Tim Van Holder. + +2005-03-25 Paul Eggert + + * tests/regression.at (Token definitions): Don't use a token named + c, as that generates a "#define c ..." that runs afoul of buggy + stdlib.h that uses the identifier c as a member of struct + drand48_data. Problem reported by Horst Wente. + +2005-03-21 Paul Eggert + + * bootstrap: Change translation URL from + http://www2.iro.umontreal.ca/~gnutra/po/maint/bison/ to + http://www.iro.umontreal.ca/translation/maint/bison/ to avoid + redirection glitches. Problem reported by twlevo@xs4all.nl. + +2005-03-20 Paul Eggert + + * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Don't put options + after operands; POSIX says this isn't portable for the c99 command. + +2005-03-18 Paul Eggert + + * tests/glr-regression.at (glr-regr2a.y): Try to dump core + immediately if a data overrun has occurred; this may help us track + down what may be a spurious failure on MacOS. + +2005-03-17 Paul Eggert + + Respond to problems reported by twlevo@xs4all.nl. + + * bootstrap: Use "trap - 0" rather than the unportable "trap 0". + + * src/vcg.h: Comment fix. + * src/vcg_defaults.h: Parenthesize macro bodies to make them safe. + (G_CMAX): Change to -1 instead of INT_MAX. + + * data/yacc.c (yyparse): Omit spaces before #line. + +2005-03-15 Paul Eggert + + * src/tables.c (state_number_to_vector_number): Put it inside an + "#if 0", since it's not currently used. Problem reported by + Roland McGrath. + +2005-03-06 Paul Eggert + + * src/output.c (escaped_output): Renamed from + escaped_file_name_output, since we now use it for symbol tags as + well. All uses changed. + (symbol_destructors_output, symbol_printers_output): + Escape symbol tags too. + Problem reported by Matyas Forstner in + . + + * src/muscle_tab.c (muscle_code_grow): Don't quote numbers; it's + not needed. + * src/output.c (user_actions_output, token_definitions_output, + symbol_destructors_output, symbol_printers_output): Likewise. + * src/reader.c (prologue_augment): Likewise. + * src/scan-gram.l (handle_action_dollar, handle_action_at): Likewise. + + * src/vcg.c (output_edge): Don't quote linestyle arg. + Problem reported by twlevo@xs4all.nl. + +2005-02-28 Paul Eggert + + * doc/bison.texinfo (Semantic Tokens): Fix scoping problem in + example, reported by Derek M Jones. Also, make the example even + more outrageous, to better illustrate how bad the problem is. + +2005-02-24 Paul Eggert + + * doc/bison.texinfo (Mfcalc Symtab): Correct the prototype for + putsym. Typo reported by Sebastian Piping. + +2005-02-23 Paul Eggert + + * doc/bison.texinfo (Language and Grammar): some -> same + (Epilogue): int he -> in the + Typos reported by Sebastian Piping via Justin Pence. + +2005-02-07 Paul Eggert + + * tests/glr-regression.at (Improper handling of embedded actions + and dollar(-N) in GLR parsers): Renamed from "Improper handling of + embedded actions and $-N in GLR parsers", work around an Autoconf bug + with dollar signs in test names. + * tests/input.at (Invalid dollar-n): Renamed from "Invalid \$n", + for a similar reason. + +2005-01-28 Paul Eggert + + * src/vcg.c (output_graph): G_VIEW -> normal_view in case someone + wants to redefine G_VIEW. + +2005-01-27 Paul Eggert + + * src/vcg.c (get_view_str): Remove case for normal_view. + Problem reported by twlevo@xs4all.nl. + +2005-01-24 Paul Eggert + + * configure.ac (O0CFLAGS, O0CXXFLAGS): Fix quoting bug. + Problem reported by twlevo@xs4all.nl. + + * doc/bison.texinfo: Change @dircategory from "GNU programming + tools" to "Software development". Requested by Richard Stallman + via Karl Berry. + +2005-01-23 Paul Eggert + + * tests/c++.at (AT_CHECK_DOXYGEN): Don't use options after operands. + Problem reported by twlevo@xs4all.nl. + +2005-01-21 Paul Eggert + + * data/yacc.c (YYCOPY, yystpcpy, yyparse): Remove "register" + keyword; it's not needed with modern compilers, and it doesn't + affect correctness with older compilers. Suggested by + twlevo@xs4all.nl. + +2005-01-17 Paul Eggert + + * data/glr.c (yyuserAction): Add "default: break;" case to pacify + gcc -Wswitch-default. + * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise. + * data/yacc.c (yyparse): Likewise. + +2005-01-12 Paul Eggert + + * src/system.h (OUTPUT_EXT, TAB_EXT): Define only if not defined + already. Let config.h define any nonstandard values. + +2005-01-10 Paul Eggert + + * tests/calc.at (_AT_DATA_CALC_Y): Use alarm (100), not alarm (10), + for the benefit of slower hosts. Problem reported by + Nelson H. F. Beebe. + +2005-01-07 Paul Eggert + + * data/yacc.c (yyparse): Pacify non-GCC compilers about yyerrorlab + being defined and not used. + * data/lalr1.cc (yyparse): Likewise. + Use "if (false)" rather than "if (0)". + +2005-01-05 Paul Eggert + + * TODO: Mention that we should allow NUL bytes in tokens. + +2005-01-02 Paul Eggert + + * src/scan-skel.l (<>): Don't close standard output. + Problem reported by Hans Aberg. + +2005-01-01 Paul Eggert + + * src/getargs.c (version): Happy new year; update overall + program copyright date from 2004 to 2005. + + * src/scan-skel.l ("@output ".*\n): Don't close standard output. + Problem reported by Hans Aberg. + * tests/output.at (AT_CHECK_OUTPUT): New arg SHELLIO. + (Output file names.): Add a test for the case when standard output + is closed. + +2004-12-26 Paul Eggert + + * doc/bison.texinfo (@copying): Update FDL version number to 1.2, + to fix an oversight in the Bison 2.0 manual. + +2004-12-25 Paul Eggert + + * NEWS: Version 2.0. Reformat the existing news items since + 1.875, so that related items are grouped together. + * configure.ac (AC_INIT): Bump version to 2.0. + * src/parse-gram.c, src/parse-gram.h: Regenerate with 2.0. + + * tests/torture.at (Exploding the Stack Size with Alloca): Set + YYSTACK_USE_ALLOCA to 1 if __GNUC__ or alloca are defined; + otherwise, we're not testing alloca. Unfortunately there's no + simple way to consult HAVE_ALLOCA here. + + * data/lalr1.cc (yydestruct_): Pacify unused variable warning + for yymsg, too. + + * src/LR0.c (new_itemsets): Use memset rather than zeroing by + hand. This avoids a warning about comparing int to size_t when + GCC warnings are enabled. + +2004-12-22 Paul Eggert + + * NEWS: Bison-generated parsers no longer default to using the + alloca function (when available) to extend the parser stack, due + to widespread problems in unchecked stack-overflow detection. + * data/glr.c (YYMAXDEPTH): Remove undef when zero. It's the user's + responsibility to set it to a positive value. This lets the user + specify a value that is not a preprocessor constant. + * data/yacc.c (YYMAXDEPTH): Likewise. + (YYSTACK_ALLOC): Define only if YYSTACK_USE_ALLOCA is nonzero. + * doc/bison.texinfo (Stack Overflow): YYMAXDEPTH no longer needs + to be a compile-time constant. However, explain the constraints on it. + Also, explain the constraints on YYINITDEPTH. + (Table of Symbols): Explain that alloca is no longer the default. + Explain the user's responsibility if they define YYSTACK_USE_ALLOCA + to 1. + + * doc/bison.texinfo (Location Default Action): Mention that n must + be zero when k is zero. Suggested by Frank Heckenbach. + +2004-12-22 Akim Demaille + + * data/lalr1.cc (parser::token_number_type, parser::rhs_number_type) + (parser::state_type, parser::semantic_type, parser::location_type): + Private, not public. + (parser::parse): Return ints, not bool. + Returning a bool introduces a problem: 0 corresponds to false, and + it seems weird to return false on success. Returning true changes + the conventions for yyparse. + Alternatively we could return void and send an exception. + There is no clear consensus (yet?). + (state_stack, semantic_stack, location_stack): Rename as... + (state_stack_type, semantic_stack_type, location_stack_type): these. + Private, not public. + * tests/c++.at: New. + * tests/testsuite.at, tests/Makefile.am: Adjust. + +2004-12-21 Akim Demaille + + * data/lalr1.cc (parser::parse): Return a bool instead of an int. + +2004-12-21 Akim Demaille + + Don't impose std::string for filenames. + + * data/lalr1.cc (b4_filename_type): New. + (position::filename): Use it. + (parser.hh): Move the inclusion of stack.hh and location.hh below + the user code, so that needed headers for the filename type can be + included first. + Forward declare them before the user code. + * tests/Makefile.am (check-local, installcheck-local): Pass + TESTSUITEFLAGS to the TESTSUITE. + +2004-12-20 Akim Demaille + + Use more STL like names: my_class instead of MyClass. + + * data/lalr1.cc (LocationStack, LocationType, RhsNumberType) + (SemanticStack, SemanticType, StateStack, StateType) + (TokenNumberType, Stack, Slice, Traits, Parser::location) + (Parser::value): Rename as... + (location_stack, location_type, rhs_number_type, semantic_stack) + (semantic_type, state_stack, state_type, token_number_type, stack) + (slice, traits, parser::yylloc, parser::yylval): these. + + * tests/calc.at, tests/regression.at, tests/actions.at: Adjust. + +2004-12-19 Paul Eggert + + * data/glr.c (YYLLOC_DEFAULT): Use GNU spacing conventions. + * data/yacc.c (YYLLOC_DEFAULT): Likewise. + +2004-12-17 Paul Eggert + + Remove uses of 'short int' and 'unsigned short int'. This raises + some arbitrary limits. It uses more memory but nowadays that's + not much of an issue. + + This change does not affect the generated parsers; that's a different + task, as some users will want to conserve memory there. + + Ideally we should use size_t to represent all object counts, and + something like ptrdiff_t to represent signed differences of object + counts; but that will require more code-cleanup than I have the + time to do right now. + + * src/LR0.c (allocate_itemsets, new_itemsets, save_reductions): + Use size_t, not int or short int, to count objects. + * src/closure.c (nritemset, closure): Likewise. + * src/closure.h (nritemset, closure): Likewise. + * src/nullable.c (nullable_compute): Likewise. + * src/print.c (print_core): Likewise. + * src/print_graph.c (print_core): Likewise. + * src/state.c (state_compare, state_hash): Likewise. + * src/state.h (struct state): Likewise. + * src/tables.c (default_goto, goto_actions): Likewise. + + * src/gram.h (rule_number, rule): Use int, not short int. + * src/output.c (prepare_rules): Likewise. + * src/state.h (state_number, STATE_NUMBER_MAXIMUM, transitions, + errs, reductions): Likewise. + * src/symtab.h (symbol_number, SYMBOL_NUMBER_MAXIMUM, struct symbol): + Likewise. + * src/tables.c (vector_number, tally, action_number, + ACTION_NUMBER_MINIMUM): Likewise. + * src/output.c (muscle_insert_short_int_table): Remove. + +2004-12-17 Akim Demaille + + * data/lalr1.cc: Extensive Doxygenation. + (error_): Rename as... + (error): this, since it is visible to the user. + Adjust callers. + (Parser::message): Now an automatic variable from... + (Parser::yyreport_syntax_error_): here. + * tests/actions.at, tests/calc.at, tests/regression.at: Adjust to + Parser::error. + * tests/input.at: Escape $. + +2004-12-16 Paul Eggert + + * data/glr.c (b4_lhs_value, b4_rhs_value, b4_rhs-location): + Parenthesize rhs to avoid obscure problems with mistakes like + "foo$$bar = foo$1bar;". Problem reported by twlevo at xs4all. + * data/lalr1.cc (b4_lhs_value, b4_rhs_value, b4_lhs_location, + b4_rhs_location): Likewise. + * data/yacc.c (b4_lhs_value, b4_rhs_value, b4_lhs_location, + b4_rhs_location): Likewise. + +2004-12-16 Akim Demaille + + * data/lalr1.cc (yyreport_syntax_error_): Catch up with glr.c and + yacc.c: be sure to stay within yycheck_. + * tests/actions.at: Re-enable C++ tests. + +2004-12-16 Akim Demaille + + * src/print_graph.c (print_graph): Remove layoutalgorithm uses for + real. + +2004-12-16 Akim Demaille + + Use #define to handle the %name-prefix. + + * data/glr.c, data/yacc.c: Comment changes. + * data/lalr1.cc (yylex): Use #define to select the name of yylex, + so that one can refer to yylex in the parser file, and have it + renamed, as is the case with other skeletons. + +2004-12-16 Akim Demaille + + Move lalr1.cc internals into yy*. + + * data/lalr1.cc (semantic_stack_, location_stack_, state_stack_) + (semantic_stack_, location_stack_, pact_, pact_ninf_, defact_) + (pgoto_, defgoto_, table_, table_ninf_, check_, stos_, r1_, r2_) + (name_, rhs_, prhs_, rline_, token_number_, eof_, last_, nnts_) + (empty_, final_, terror_, errcode_, ntokens_) + (user_token_number_max_, undef_token_, n_, len_, state_, nerrs_) + (looka_, ilooka_, error_range_, nerrs_): + Rename as... + (yysemantic_stack_, yylocation_stack_, yystate_stack_) + (yysemantic_stack_, yylocation_stack_, yypact_, yypact_ninf_) + (yydefact_, yypgoto_, yydefgoto_, yytable_, yytable_ninf_) + (yycheck_, yystos_, yyr1_, yyr2_, yyname_, yyrhs_, yyprhs_) + (yyrline_, yytoken_number_, yyeof_, yylast_, yynnts_, yyempty_) + (yyfinal_, yyterror_, yyerrcode_, yyntokens_) + (yyuser_token_number_max_, yyundef_token_, yyn_, yylen_, yystate_) + (yynerrs_, yylooka_, yyilooka_, yyerror_range_, yynerrs_): + these. + +2004-12-15 Paul Eggert + + Fix some problems reported by twlevo at xs4all. + * src/symtab.c (symbol_new): Report an error if the input grammar + contains too many symbols. This is better than calling abort() later. + * src/vcg.h (enum layoutalgorithm): Remove. All uses removed. + (struct node, struct graph): + Rename member expand to stretch. All uses changed. + (struct graph): Remove member layoutalgorithm. All uses removed. + * src/vcg.c (get_layoutalgorithm_str): Remove. All uses removed. + * src/vcg_defaults.h (G_STRETCH): Renamed from G_EXPAND. + All uses changed. + (N_STRETCH): Rename from N_EXPAND. All uses changed. + +2004-12-15 Akim Demaille + + * data/lalr1.cc: Normalize /** \brief ... */ to ///. + Add more Doxygen comments. + (symprint_, stack_print_, reduce_print_, destruct_, pop) + (report_syntax_error_, translate_): Rename as... + (yysymprint_, yystack_print_, yyreduce_print_, yydestruct_) + (yypop_, yyreport_syntax_error_, yytranslate_): this. + +2004-12-15 Akim Demaille + + * data/lalr1.cc (lex_): Rename as... + (yylex_): this. + Move the trace here. + Take the %name-prefix into account. + Reported by Alexandre Duret-Lutz. + +2004-12-15 Akim Demaille + + Simplify the C++ parser constructor. + + * data/lalr1.cc (debug_): Rename as... + (yydebug_): so that the parser's internals are always in the yy* + pseudo namespace. + Adjust uses. + (b4_parse_param_decl): Remove the leading comma as it is now only + called as unique argument list. + (Parser::Parser): Remove the constructor accepting a location and + an initial debugging level. + Remove from the other ctor the argument for the debugging level. + (debug_level_type, debug_level, set_debug_level): New. + + * tests/actions.at, tests/calc.at, tests/regression.at: Adjust + constructor calls. + +2004-12-15 Akim Demaille + + Remove b4_root related material: failure experiment + (which goal was to allow to derive from a class). + + * data/lalr1.cc (b4_root, b4_param, b4_constructor): Remove + definitions and uses. + +2004-12-14 Paul Eggert + + * data/glr.c (struct yyGLRStack): yyerror_range now has 3 items, + not 2, since it's not portable to subtract 1 from the start of an + array. The new item 0 is never set or used. All uses changed. + + (yyrecoverSyntaxError): Use YYLLOC_DEFAULT instead of assuming + the default definition of YYLLOC_DEFAULT. Problem reported + by Frank Heckenbach. + +2004-12-12 Paul Eggert + + * data/glr.c (YYRHSLOC): Don't have two definitions, one for + the normal case and one for the error case. Just use the + first one uniformly. Problem reported by Frank Heckenbach. + (YYLLOC_DEFAULT): Use the conventions of yacc.c, so we can + use exactly the same macro in both places. + (yyerror_range): Now of type yyGLRStackItem, not YYLTYPE, + so that the normal-case YYRHSLOC works for the error case too. + All uses changed. + * data/yacc.c (YYRHSLOC): New macro, taken from glr.c. + (YYLLOC_DEFAULT): Use the same macro as glr.c. + * doc/bison.texinfo (Location Default Action): Don't claim that + we have an array of locations. Use the same macro for both glr + and lalr parsers. Mention YYRHSLOC. Mention what happens when + the index is 0. + +2004-12-10 Paul Eggert + + * HACKING: Update email addresses to send announcements to. + + * configure.ac (AC_INIT): Bump version to 1.875f. + +2004-12-10 Paul Eggert + + * NEWS: Version 1.875e. + * src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875e. + + * src/scan-skel.l: Include "complain.h", for "fatal". + + * src/relation.h (relation_print, relation_digraph): + Relation sizes are of type relation_node, not size_t (this is + merely a doc fix, since the two types are equivalent). + (relation_transpose): Relation sizes are of type relation_node, + not int. + * src/relation.c: Likewise. + (top, infinity): Now of type relation_node, not int. + (traverse, relation_transpose): Use relation_node, not int. + + * data/glr.c (yyuserAction, yyrecoverSyntaxError): Mark args + with ATTRIBUTE_UNUSED if they're not used, to avoid GCC warning. + (yyparse): Remove unused local introduced in 2004-10-25 patch. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): New arg + specifying whether the test should be skipped. Use it tp + specify that the [%defines %skeleton "lalr1.cc"] tests currently + fail on some hosts, and should be skipped. + +2004-12-08 Paul Eggert + + * src/system.h (CALLOC, MALLOC, REALLOC): Remove. All callers + changed to use xcalloc, xnmalloc, xnrealloc, respectively, + unless otherwise specified below. + + * src/LR0.c (allocate_itemsets): Use xnmalloc, not xcalloc, + to allocate kernel_base, kernel_items, kernel_size, since + they needn't be initialized to 0. + (allocate_storgae): Likewise, for shiftset, redset, shift_symbol. + * src/closure.c (new_closure): Likewise, for itemset. + * src/derives.c (derives_compute): Likewise, for delts, derives, q. + * src/lalr.c (set_goto_map): Likewise, for temp_map. + (initialize_F): Likewise, for reads, edge, reads[i], includes[i]. + (build_relations): Likewise for edge, states1, includes. + * src/nullable.c (nullable_compute): Likewise, for squeue, relts. + * src/reader.c (packgram): Likewise, for ritem, rules. + * src/reduce.c (nonterminals_reduce): Likewise for nontermmap. + * src/relation.c (relation_digraph): Likewise for VERTICES. + (relation_transpose): Likewise for new_R, end_R. + * src/symtab.c (symbols_token_translations_init): Likewise for + token_translations. + * src/tables.c (save_row): Likewise for froms, tos, conflict_tos. + (token_actions): Likewise for yydefact, actrow, conflrow, + conflict_list. + (save_column): Likewise for froms[symno], tos[symno]. + (goto_actions): Likewise for state_count. + (pack_table): Likewise for base, pos, check. + (tables_generate): Likewise for width. + + * src/LR0.c (set_states): Don't reuse kernel_size and kernel_base + for initial core. Just have a separate core, so we needn't worry + about whether kernel_size and kernel_base are initialized. + + * src/LR0.c (shift_symbol, redset, shiftset, kernel_base, + kernel_size, kernel_items): Remove unnecessary initialization. + * src/conflicts.c (conflicts): Likewise. + * src/derives.c (derives): Likewise. + * src/muscle_tablc (muscle_insert): Likewise. + * src/relation.c (relation_digraph): Likewise. + * src/tables.c (froms, tos, conflict_tos, tally, width, actrow, order, + conflrow, conflict_table, conflict_list, table, check): + Likewise. + + * src/closure.c (new_closure): Arg is of type unsigned int, not int. + This is because all callers pass unsigned int. + * src/closure.h (new_closure): Likewise. + + * src/lalr.c (initialize_F): Initialize reads[i] in all cases. + (build_relations): Initialize includes[i] in all cases. + * src/reader.c (packgram): Always initialize rules[ruleno].prec + and rules[ruleno].precsym. Initialize members in order. + * src/relation.c (relation_transpose): Always initialize new_R[i] + and end_R[i]. + * src/table.c (conflict_row): Initialize 0 at end of conflict_list. + + * src/output.c (prepare_actions): Pass 0 instead of conflict_list[0]; + conflict_list[0] was always 0, but now it isn't initialized. + + * src/table.c (table_grow): When conflict_table grew, the grown + area wasn't cleared. Fix this. + + * lib/.cvsignore: Add strdup.c, strdup.h. + * m4/.cvsignore: Add strdup.m4. + +2004-12-07 Paul Eggert + + * src/lalr.h (GOTO_NUMBER_MAXIMUM): New macro. + * src/lalr.c (set_goto_map): Don't allow ngotos to equal + GOTO_NUMBER_MAXIMUM, since we occasionally compute + ngotos + 1 without checking for overflow. + (build_relations): Use END_NODE, not -1, to denote end of edges. + * src/lalr.c (set_goto_map, map_goto, initialize_F, add_loopback_edge, + build_relations): Use goto_number, not int, for goto numbers. + * src/tables.c (save_column, default_goto): Likewise. + +2004-11-23 Akim Demaille + + * data/lalr1.cc (YYSTYPE): Define it as is done for C, instead + of #defining from yystype. + Don't typedef yystype, C++ does not need it. + This lets it possible to forward declare it as union. + +2004-11-23 Paul Eggert + + * bootstrap (gnulib_modules): Add extensions. + Problem reported by Jim Meyering. + +2004-11-22 Paul Eggert + + * src/LR0.c, src/closure.c, src/derives.c, src/gram.c, + src/lalr.c, src/nullable.c, src/relation.c, src/scan-skel.l, + src/system.h, src/tables.c: XFREE -> free, to accommodate + recent change to gnulib xalloc.h. + Problem reported by Jim Meyering. + +2004-11-17 Akim Demaille + + * data/lalr1.cc (symprint_): Use cdebug_ to avoid warnings. + +2004-11-17 Akim Demaille , + Alexandre Duret-Lutz + + * data/lalr1.cc (Parser::yycdebug_): New, a pointer, to allow + changes. + (YYCDEBUG): Adjust. + Use it instead of cdebug_. + (Parser::debug_stream, Parser::set_debug_stream): New. + (Parser::symprint_): Define cdebug_ for temporary backward + compatibility. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Use + debug_stream (). + +2004-11-17 Akim Demaille + + * data/lalr1.cc (Parser:print_): Remove, use %printer instead. + * tests/regression.at (_AT_DATA_DANCER_Y): Adjust. + * tests/calc.at (_AT_DATA_CALC_Y): Ditto. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise. + +2004-10-27 Paul Eggert + + * data/glr.c (yyloc_default): Remove; not used. + Problem reported by Frank Heckenbach. + +2004-10-25 Akim Demaille + + * data/glr.c (YYRHSLOC): Move its definition next to its uses. + Introduce another definition to address simple location arrays. + (yyGLRStack): New member: yyerror_range. + (yyrecoverSyntaxError, yyparse): Update it. + (yyrecoverSyntaxError): Use it when shifting the error token to + have an accurate range, equivalent to the one computed by both + yacc.c and lalr1.cc. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Change its yylex so + that column numbers start at column 0, as per GNU Coding + Standards, the others tests, and the doc. + (_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT_WITH_LOC): + Adjust to the above change (first column is 0). + And adjust the location of the "", now covering the whole + line. + +2004-10-22 Akim Demaille + and Paul Eggert + + Remove some arbitrary limits on goto numbers and relations. + * src/lalr.c (goto_map, ngotos, from_state, to_state): Omit + initial values, since they're never used. + (set_goto_map): ngotos is now unsigned, so test for overflow + by seeing whether it wraps around to zero. + * src/lalr.h (goto_number): Now size_t, not short int. + (GOTO_NUMBER_MAXIMUM): Remove. + * src/relation.c (relation_print, traverse, relation_transpose): + Check for END_NODE rather than looking at sign. + * src/relation.h (END_NODE): New macro. + (relation_node): Now size_t, not short int. + +2004-10-22 Paul Eggert + + * doc/bison.texinfo (Language and Grammar): In example, "int" is a + keyword, not an identifier. Problem reported by Baron Schwartz in + . + +2004-10-11 Akim Demaille + + * src/symtab.c (symbol_check_alias_consistency): Also check + type names, destructors, and printers. + Reported by Alexandre Duret-Lutz. + Recode the handling of associativity and precedence in terms + of symbol_precedence_set. + Accept no redeclaration at all, not even equal to the previous + value. + (redeclaration): New. + Use it to factor redeclaration complaints. + (symbol_make_alias): Don't set the type of the alias, let + symbol_check_alias_consistency do it as for other features. + * src/symtab.h (symbol): Add new member prec_location, and + type_location. + * src/symtab.c (symbol_precedence_set, symbol_type_set): Set them. + * tests/input.at (Incompatible Aliases): New. + +2004-10-09 Paul Eggert + + .cvsignore fixes to accommodate gnulib changes, + and the practice of naming build directories "_build". + * .cvsignore: Add "_*". Sort. + * lib/.cvsignore: Add getopt_.h, xalloc-die.c. + * m4/.cvsignore: Add "*_gl.m4". + +2004-10-06 Akim Demaille + + * src/parse-gram.y (add_param): Fix the truncation of trailing + spaces. + +2004-10-05 Akim Demaille + + In Bison 1.875's yacc.c, YYLLOC_DEFAULT was called regardless + whether the reducion was empty or not. This leaves room to + improve the use of YYLLOC_DEFAULT in such a case. + lalr1.cc is still experimental, so changing this is acceptable. + And finally, there are probably not many users who changed the + handling of locations in GLR, so changing is admissible too. + + * data/glr.c, data/lalr1.cc, data/yacc.c (YYLLOC_DEFAULT): On an + empty reduction, set @$ to an empty location ending the previously + stacked symbol. + Adjust uses to make sure the code is triggered on empty + reductions. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust the + expected output: empty reductions have empty locations. + +2004-09-29 Akim Demaille + + * data/lalr1.cc: Move towards a more standard C++ coding style + for templates: Class < T > -> Class. + +2004-09-29 Akim Demaille + + * data/lalr1.cc: Reinstall the former ctor, for sake of + compatibility, but warn it will be removed. + Move towards a more standard C++ coding style (i.e., type *var -> + type* var). + +2004-09-27 Paul Eggert + + * src/parse-gram.y (add_param): Rewrite to avoid strchr, + since it's less likely to work if NULs are involved in the future. + +2004-09-27 Akim Demaille + + * data/yacc.c (YY_LOCATION_PRINT): Fix its default declaration. + +2004-09-27 Akim Demaille + + * data/lalr1.cc (b4_parse_param_decl_1): New. + (b4_parse_param_decl): Use it to have different names between attribute + and argument names. + (b4_cc_constructor_call): Likewise. + +2004-09-24 Akim Demaille + + * src/parse-gram.y (add_param): Strip the leading and trailing + blanks from a formal argument declaration. + (YY_LOCATION_PRINT): New. + +2004-09-24 Akim Demaille + + * data/c.m4 (b4_yysymprint_generate): Move the YYINPUT invocation + after the location. + +2004-09-24 Akim Demaille + + * doc/bison.texinfo (Table of Symbols): Sort. + +2004-09-21 Akim Demaille + + * data/yacc.c, data/glr.c (b4_at_dollar, b4_dollar_dollar): Remove + the useless parentheses. + Suggested by Paul Eggert. + +2004-09-20 Akim Demaille + + Let the initial-action act on the look-ahead, and use it for the + "initial push" (corresponding to an hypothetical beginning-of-file). + And let lalr1.cc honor %initial-action. + + * doc/bison.texinfo (Initial Action Decl): Clarify, and add an + example. + * data/lalr1.cc (Parser::initlocation_): Remove, bad experiment. + (Parser::Parser): Remove the ctor that used to initialize it. + (Parser::parse): Like in the other skeletons, issue the "starting + parse" message before any action. + Honor %initial-action. + Initialize the stacks with the lookahead. + * data/yacc.c: Let $$ and @$ in %initial-action designate the + look-ahead. + Push them in the stacks. + * tests/actions.at, tests/calc.at: Adjust the C++ ctor invocations. + +2004-09-20 Akim Demaille + + * doc/bison.texinfo (Initial Action Decl): New. + +2004-09-20 Akim Demaille + + * data/yacc.c (YY_LOCATION_PRINT): Use YYLTYPE_IS_TRIVIAL as a + clearer criterion to define it. + (parse): Initialize the initial location when YYLTYPE_IS_TRIVIAL. + When reducing on an empty RHS, use the latest stacked location as + location. + yylloc is not always available. + * data/glr.c: Likewise. + Also, honor initial-actions. + +2004-09-20 Akim Demaille + + * data/yacc.c (YY_LOCATION_PRINT): New. + Define when we know YYLTYPE's structure, i.e., when the default + YYLLOC_DEFAULT is used. + * data/c.m4 (b4_yysymprint_generate): Use it. + * data/lalr1.cc (YYLLOC_DEFAULT): Stop relying on the initial + value of the result. + (error_start_): Replace with... + (error_range_): this location array. + This allows to replace code relying on the implementation of + locations by portable code. + * data/yacc.c (yylerrsp): Replace with... + (yyerror_range): this. + Every time a token is popped, update yyerror_range[0], to have an + accurate location for the error token. + * data/glr.c (YY_LOCATION_PRINT): New. + (yyprocessOneStack): Fix an invocation of YY_SYMBOL_PRINT: + deference a pointer. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): No longer + report the location in %printers. + + * src/scan-skel.l: Instead of abort, report error messages to ease + understanding skeleton scanning failures. + +2004-09-16 Akim Demaille + + * data/lalr1.cc (Stack::Iterator, Stack::ConstIterator): Rename as... + (iterator, const_iterator): these, to be more in the C++ spirit. + Also, return reverse iterators so that when displaying the stack + we display its bottom first. + (Parser::stack_print_, Parser::reduce_print_): Match the messages + from yacc.c. + We should probably use vector here though. + +2004-09-16 Akim Demaille + + Have more complete shift traces. + + * data/yacc.c, data/lalr1.c, data/glr.c: Use YY_SYMBOL_PRINT + to report Shifts instead of ad hoc YYDPRINTF invocations, + including for the error token. + * data/lalr1.cc (symprint_): Output the location. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): In C++, don't + output the location within the %printer. + Activate GLR tests, at least to make sure they compile properly. + They still don't pass though. + * tests/calc.at: Adjust expect verbose output, since now "Entering + state..." is on a different line than the "Shifting" message. + +2004-09-08 Akim Demaille + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Move the + Bison directive from the Bison file to the invocation of this + macro, so that these directives are passed to + AT_BISON_OPTION_PUSHDEFS to get correct help macros. + Use these helping macros (e.g., AT_LOC, AT_VAL and so forth). + Move the AT_SETUP/AT_CLEANUP outside, to report as test title + the extra Bison directives instead of the whole series. + Change the grammar so that there are recoverable errors, and + unrecoverable errors. Now we can have the parser give up before + consuming the whole input. As a result we now can observe that + the lookahead is freed when needed. + Change the parser source to parse argv[1] instead of a hard coded + string. + Simplify yylex, and give a value and location to EOF. + Simplify some invocations of AT_CHECK_PRINTER_AND_DESTRUCTOR that + passed directives already coded in the file. + Add some tests to check the location of "error". + For some tests, the C++ parser is correct, and not yacc.c. + For other tests, they provide different, but unsatisfying, values, + so keep the C++ value so that at least one parser is "correct" + according to the test suite. + (Actions after errors): Remove, this is subsumed by the + AT_CHECK_PRINTER_AND_DESTRUCTOR series. + +2004-09-06 Akim Demaille + + * data/lalr1.cc: Adjust the indentation of the labels. + (Parser::pop): New. + Use it. + +2004-09-06 Akim Demaille + + * data/yacc.cc, data/glr.cc (yydestruct): Accept an additional + argument, an informative message. + Call YY_SYMBOL_PRINT. + Adjust all callers: integrate the associated YY_SYMBOL_PRINT. + * data/lalr1.cc (destruct_): Likewise. + In addition, no longer depend on b4_yysymprint_generate and + b4_yydestruct_generate to generate these functions, do it "by + hand". + +2004-09-03 Akim Demaille + + * data/glr.c, data/lalr1.cc, data/yacc.c: When YYABORT was + invoked, yydestruct the lookahead. + * tests/calc.at (Calculator $1): Update the expected lengths of + traces: there is an added line for the discarded lookahead. + * doc/bison.texinfo (Destructor Decl): Some rewording. + Define "discarded" symbols. + +2004-09-02 Akim Demaille + + * data/lalr1.cc (translate_, destruct_): No reason to be static. + +2004-09-02 Akim Demaille + + * data/glr.c, yacc.c (YYDSYMPRINT): Remove, not used. + (YYDSYMPRINTF): Rename as... + (YY_SYMBOL_PRINT): this. + * data/lalr1.cc (YY_SYMBOL_PRINT): New, modeled after the previous + two. + Use it instead of direct symprint_ calls. + (yybackup): Tweak the "Now at end of input" case to match yacc.c's + one. + +2004-09-02 Akim Demaille + + * data/lalr1.cc (b4_yysymprint_generate): New. + (symprint_): New member function, defined when YYDEBUG. + Use it consistently instead of token/nterm debugging output by + hand. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust + %printer calls to use cdebug_ when using lalr1.cc. + +2004-08-30 Florian Krohm + + * data/glr.c: Guard the declarations of yypstack and yypdumpstack + with #ifdef YYDEBUG. + +2004-08-26 Akim Demaille + + * doc/bison.texinfo (Implementing Loops): Rename as... + (Implementing Gotos/Loops): this. + +2004-08-13 Paul Eggert + + Adjust to latest gnulib. + * bootstrap (gnulib_modules): Add xalloc-die. + Set LC_ALL=C so that file names sort consistently. + Prefer the gnulib copies of gettext.m4, glibc21.m4, + inttypes_h.m4, lib-ld.m4, lib-prefix.m4, po.m4, stdint_h.m4, + uintmax_t.m4, ulonglong.m4. + (intl_files_to_remove): Add gettext.m4, lib-ld.m4, lib-prefix.m4, + po.m4 since we are now using _gl.m4 instead. + +2004-08-10 Florian Krohm + + * src/scan-action.l: Remove. Scanning of semantic actions is + handled in scan-gram.l. + +2004-08-07 Florian Krohm + + * src/scan-gram.l (handle_syncline): Use uniqstr_new not xstrdup. + + * src/location.h (struct): The file member is a uniqstr. + (equal_boundaries): Use UNIQSTR_EQ for comparison. + +2004-07-22 Paul Eggert + + Fix bug with non-%union parsers that have printers or destructors, + which led to a Bison core dump. Reported by Peter Fales in + . + + * data/c.m4 (b4_symbol_actions): Don't assume %union was used. + * data/lalr1.cc (yystype) [defined YYSTYPE]: Define to YYSTYPE, + not to our own type. + * src/output.c (symbol_destructors_output, symbol_printers_output): + Don't assume %union. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR, + AT_CHECK_PRINTER_AND_DESTRUCTOR): New argument + UNION-FLAG. All callers changed. + (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't assume %union. + Use type char, not unsigned int, when declaring an array of char; + this lets us remove a cast. + (Printers and Destructors): Add non-%union test cases. + +2004-06-21 Paul Eggert + + * doc/bison.texinfo: Minor editorial changes, mostly to the new + GLR writeups. E.g., avoid frenchspacing and the future tense, + change "lookahead" to "look-ahead", and change "wrt" to "with + respect to". + +2004-06-21 Paul Hilfinger + + * doc/bison.texinfo (Merging GLR Parses, Compiler Requirements): + New sections, split off from the GLR Parsers section. Put the new + Simple GLR Parser near the start of the GLR section, for clarity. + Rewrite connective text. + +2004-06-21 Frank Heckenbach + + * doc/bison.texinfo (Simple GLR Parsers): New section. + +2004-06-21 Paul Eggert + + * NEWS, TODO, doc/bison.texinfo: + Use "look-ahead" instead of "lookahead", to be consistent. + * REFERENCES: Fix incorrect reference to DeRemer and Pennello, + while we're fixing "look-ahead". + * src/conflicts.c (shift_set): Renamed from shiftset. + (look_ahead_set): Renamed from lookaheadset. + * src/print.c: Likewise. + * src/getargs.c (report_args): Add "look-ahead" as the new canonical + name for "lookahead". + (report_types, usage): Likewise. + * src/getargs.h (report_look_ahead_tokens): Renamed from + report_lookaheads. + * src/lalr.c (compute_look_ahead_tokens): Renamed from + compute_lookaheads. + (state_look_ahead_tokens_count): Renamed from state_lookaheads_count. + (look_ahead_tokens_print): Renamed from lookaheads_print. + * src/state.c (state_rule_look_ahead_tokens_print): Renamed from + state_rule_lookaheads_print. + * src/state.h: Likewise. + (reductions.look_ahead_tokens): Renamed from lookaheads. + * tests/torture.at (AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR): Renamed from + AT_DATA_LOOKAHEADS_GRAMMAR. + +2004-06-03 Paul Eggert + + * README: Update location of patched M4 distribution. + +2004-05-30 Albert Chin-A-Young + + Don't assume the C++ compiler takes the same arguments as the C compiler + (trivial change). + * configure.ac (O0CXXFLAGS): New var. + * tests/atlocal.in (CXXFLAGS): Use it. + +2004-05-29 Paul Eggert + + Fix some "make check" problems with C++ reported by + Albert Chin-A-Young for Tru64 C++ in this thread: + http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00049.html + + * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check for std::cerr. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): + Output to a .cc file for C++, not to a .c file. + * tests/calc.at (AT_CHECK_CALC): Likewise. + * tests/regression.at (AT_CHECK_DANCER): Likewise. + * tests/local.at (AT_COMPILE_CXX): Default to OUTPUT.cc, not OUTPUT.c. + +2004-05-28 Albert Chin-A-Young + + * tests/calc.at, tests/actions.at: Workaround for SGI + C++ compiler. (trivial change) + +2004-05-27 Paul Eggert + + Spent a few hours checking out which prerequisite versions the + current sources actually require. I went all the way back to + Gettext 0.10.40, Automake 1.4, and Autoconf 2.57 and investigated + a seemingly endless set of combinations of versions more recent + than that. The bottom line is that the current sources require + fairly recent versions of the build tools, and it'll be some work + to change this. + * configure.ac (AC_PREREQ): Increase from 2.58 to 2.59. + (AM_INIT_AUTOMAKE): Increase from 1.7 to 1.8. + (AM_GNU_GETTEXT_VERSION): Increase from 0.11.5 to 0.12. + Add comments explaining why those particular versions are + currently needed. + + * src/parse-gram.y (lloc_default): Rewrite to avoid compiler bug + in SGI MIPSpro 7.4.1m. Problem reported by Albert Chin-A-Young in + . + + * configure.ac (AC_PREREQ): Bump to 2.58, since 2.57 doesn't work + (it fails with a Autoconf-without-aclocal-m4 diagnostic). + +2004-05-26 Paul Eggert + + * configure.ac (AM_GNU_GETTEXT_VERSION): Lower it from 0.14.1 to + 0.11.5. Suggested by Bruno Haible. + * bootstrap: Remove gettext version checking. + + * doc/bison.texinfo (Decl Summary): Also mention that %union + can depend on prerequisite types. Problem reported by Tim + Van Holder. + +2004-05-25 Paul Eggert + + * README: Mention GNU m4 1.4 bugs and Akim's patched version. + * README-alpha: Don't tell people not to package this. + + * bootstrap: Don't assume $(...) works; use `...` instead. + Problem reported by Paul Hilfinger. Also, diagnose non-GNU + gettext better. + + * doc/bison.texinfo (Decl Summary, Bison Options): Clarify what's + put into the -d output file, and mention what to do if YYSTYPE is + defined as a macro. + +2004-05-24 Paul Eggert + + Undo change made earlier today: it caused autopoint to not bring + in ABOUT-NLS. Ouch. Instead, substitute our own diagnostic for + autopoint's. + + * bootstrap: Check that gettext version matches what's in + configure.ac. Warn users to ignore robots.txt ERROR 404. + * bootstrap: Undo today's earlier change (logged below). + * configure.ac (AM_GNU_GETTEXT_VERSION): Likewise. + + The gettext version checking is causing more trouble than it's + curing; remove it. Problem reported by Paul Hilfinger. + + * bootstrap: Issue a warning that one can expect a message + 'AM_GNU_GETTEXT is used, but not AM_GNU_GETTEXT_VERSION'. + * configure.ac (AM_GNU_GETTEXT_VERSION): Remove. + +2004-05-23 Paul Eggert + + Ensure that the C++ compiler used for testing actually works on a + simple test program; if not, skip the C++-related tests. Problem + reported by Vin Shelton in: + http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00026.html + + * m4/cxx.m4: New file. + * configure.ac (BISON_TEST_FOR_WORKING_CXX_COMPILER): Add. + * tests/atlocal.in (BISON_CXX_WORKS): Add. + * tests/local.at (AT_COMPILE_CXX): Use it. + +2004-05-21 Paul Eggert + + * data/glr.c (yylloc): Output this macro even if locations are not + being generated, as the GLR parser needs it even in that case. + Problem reported by Troy A. Johnson + . + + * configure.ac (AC_INIT): Update to 1.875e. + +2004-05-21 Paul Eggert + + * NEWS: Version 1.875d. + * configure.ac (AC_INIT): Likewise. + * src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875d. + + * configure.ac (--enable-gcc-warnings): Do not enable -Wshadow, + -Wmissing-prototypes, or -Wstrict-prototypes for C++. The current + lalr1.cc runs afoul of the first, and the last two are no longer + supported by GCC 3.4.0. + * README: Mention GNU m4 1.4 or later; mention m4 patches. + * HACKING: Use ./bootstrap, not "make update" to import foreign files. + +2004-05-06 Paul Eggert + + * src/muscle_tab.c (hash_muscle): Accept and return size_t, not + unsigned int, for compatibility with latest gnulib hash module. + * src/state.c (state_hash, state_hasher): Likewise. + * src/symtab.c (hash_symbol, hash_symbol_hasher): Likewise. + * src/uniqstr.c (hash_uniqstr): Likewise. + +2004-05-03 Paul Eggert + + * NEWS: Unescaped newlines are no longer allowed in char & strings. + + * src/scan-gram.l (): Reject unescaped newlines in + character and string literals. + (unexpected_end): New function. + (unexpected_eof): Use it. + (unexpected_newline): New function. + (): Coalesce duplicate + actions. + + * NEWS: Document %expect-rr. + + * bootstrap (--gnulib-srcdir=*, --cvs-user=*): + Fix typo by replacing $1 with $option. + Remove more 'intl'-related files. + Don't DEFUN AM_INTL_SUBDIR twice. + + * lib/.cvsignore: Add strndup.h. Remove memchr.c, memcmp.c, + memrchr.c, strcasecmp.c, strchr.c, strrchr.c, strspn.c, strtol.c, + strtoul.c. + * m4/.cvsignore: Add exitfail.m4, extensions.m4, gnulib.m4, + hard-locale.m4, mbstate_t.m4, strerror_r.m4, strndup.m4, + xstrndup.m4. Remove glibc21.m4, intdiv0.m4, inttypes-pri.m4, + inttypes.m4, inttypes_h.m4, isc-posix.m4, lcmessage.m4, + stdint_h.m4, uintmax_t.m4, ulonglong.m4. + * src/.cvsignore: Add *.output. + + * src/parse-gram.y: Put copyright notice inside %{ %} so it + gets copied to the output file. + +2004-04-28 Paul Eggert + + Get files from the gnulib and po repositories, instead of relying + on them being in our CVS. Upgrade to latest versions of gnulib + and Automake. + + * Makefile.am (SUBDIRS): Remove m4; Automake now does m4. + * bootstrap: Bootstrap from gnulib and po repositories. + Much of this code was stolen from GNU diff and GNU tar's bootstrap. + * README-cvs: Document these changes. Remove version numbers from + mentions of build tools, since they change so often. Mention Flex. + + * configure.ac (AC_CONFIG_MACRO_DIR): Add, with m4 as arg. + (gl_USE_SYSTEM_EXTENSIONS): Add. + (AC_GNU_SOURCE, AC_AIX, AC_MINIX): + Remove; no longer needed, as gl_USE_SYSTEM_EXTENSIONS + does this for us. + (AC_ISC_POSIX): Remove; we no longer support this + ancient OS, as it gets in the way of latest Autoconf & gnulib. + (AC_HEADER_STDC): Remove: we now assume C89 or better. + (AC_CHECK_HEADERS_ONCE): Use instead of AC_CHECK_HEADERS. + Do not check for C89 headers, except for locale.h which is used + by the Yacc library and must port to K&R hosts. + (AC_CHECK_FUNCS_ONCE): Use instead of AC_CHECK_FUNCS. + Do not check for C89 functions, except for setlocale which is + used by the Yacc library. + (AC_CHECK_DECLS, AC_REPLACE_FUNCS): Remove; no longer needed. + (gl_DIRNAME, gl_ERROR, gl_FUNC_ALLOCA, gl_FUNC_MEMCHR, + gl_FUNC_MEMRCHR, gl_FUNC_STPCPY, gl_FUNC_STRNLEN, gl_FUNC_STRTOL, + gl_GETOPT, gl_HASH, gl_MBSWIDTH, gl_OBSTACK, gl_QUOTE, + gl_QUOTEARG, gl_XALLOC, jm_FUNC_GLIBC_UNLOCKED_IO, jm_FUNC_MALLOC, + AM_GNU_GETTEXT): Remove; now done by: + (GNULIB_AUTOCONF_SNIPPET): Add. "bootstrap" builds this for us. + (AC_CONFIG_FILES): Remove m4/Makefile, as Automake now does this + for us. + + * lib/Makefile.am: Include gnulib.mk, built for us by "bootstrap". + (BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES): + Define to empty, as gnulib.mk will do the rest for us. + ($(libbison_a_OBJECTS), stdbool.h): Remove, as gnulib.mk does this + for us. + (libbison_a_SOURCES): Define to $(lib_SOURCES) now. + (lib_SOURCES): New symbol, containing only the non-gnulib libs. + + * src/files.c: Include gnulib's xstrndup.h. + + * src/system.h (MALLOC): Use xnmalloc, for better overflow checking. + (REALLOC): Use xnrealloc, for likewise. + (xstrndup, stpcpy): Remove decls, as gnulib does this for us now. + (strnlen, memrchr): Remove decls; functions no longer used. + Include . + + * config/depcomp, config/install-sh, lib/alloca.c, lib/argmatch.c, + lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h, + lib/error.c, lib/error.h, lib/getopt.c, lib/getopt.h, + lib/getopt1.c, lib/gettext.h, lib/hash.c, lib/hash.h, + lib/malloc.c, lib/mbswidth.c, lib/mbswidth.h, lib/memchr.c, + lib/memcmp.c, lib/memrchr.c, lib/obstack.c, lib/obstack.h, + lib/quote.c, lib/quote.h, lib/quotearg.c, lib/quotearg.h, + lib/realloc.c, lib/stdbool_.h, lib/stpcpy.c, lib/strcasecmp.c, + lib/strchr.c, lib/strncasecmp.c, lib/strnlen.c, lib/strrchr.c, + lib/strspn.c, lib/strtol.c, lib/strtoul.c, lib/unlocked-io.h, + lib/xalloc.h, lib/xmalloc.c, lib/xstrdup.c, lib/xstrndup.c, + m4/Makefile.am, m4/alloca.m4, m4/dirname.m4, m4/dos.m4, + m4/error.m4, m4/getopt.m4, m4/hash.m4, m4/malloc.m4, + m4/mbrtowc.m4, m4/mbswidth.m4, m4/memchr.m4, m4/memcmp.m4, + m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/prereq.m4, + m4/quote.m4, m4/quotearg.m4, m4/realloc.m4, m4/stdbool.m4, + m4/stpcpy.m4, m4/strnlen.m4, m4/strtol.m4, m4/strtoul.m4, + m4/unlocked-io.m4, m4/xalloc.m4, po/LINGUAS, po/Makefile.in.in, + po/Makevars, po/da.po, po/de.po, po/es.po, po/et.po, po/fr.po, + po/hr.po, po/id.po, po/it.po, po/ja.po, po/ms.po, po/nl.po, + po/pt_BR.po, po/ro.po, po/ru.po, po/sv.po, po/tr.po: + Remove, as these files are now generated automatically + by bootstrap or automake. + + * po/ChangeLog: Remove: all but one entry was a duplicate + of this file, and I moved that 2000-11-02 entry here. + + * config/.cvsignore: Add Makefile, depcomp, install-sh. + * lib/.cvsignore: Add alloca.c, alloca.h, alloca_.h, argmatch.c, + argmatch.h, basename.c, dirname.c, dirname.h, error.c, error.h, + exit.h, exitfail.c, exitfail.h, getopt.c, getopt.h, getopt1.c, + getopt_int.h, gettext.h, gnulib.mk, hard-locale.c, hard-locale.h, + hash.c, hash.h, malloc.c, mbswidth.c, mbswidth.h, memchr.c, + memcmp.c, memrchr.c, obstack.c, obstack.h, quote.c, quote.h, + quotearg.c, quotearg.h, realloc.c, stdbool_.h, stpcpy.c, stpcpy.h, + strcasecmp.c, strchr.c, stripslash.c, strncasecmp.c, strndup.c, + strnlen.c, strrchr.c, strspn.c, strtol.c, strtoul.c, + unlocked-io.h, xalloc.h, xmalloc.c, xstrdup.c, xstrndup.c, + xstrndup.h. + * m4/.cvsignore: Remove Makefile, Makefile.in. Add alloca.m4, + dirname.m4, dos.m4, error.m4, getopt.m4, hash.m4, mbrtowc.m4, + mbswidth.m4, obstack.m4, onceonly.m4, quote.m4, quotearg.m4, + stdbool.m4, stpcpy.m4, strnlen.m4, unlocked-io.m4, xalloc.m4. + * po/.cvsignore: Add *.po, LINGUAS, Makefile.in.in, Makevars. + * src/.cvsignore: Remove *_.c. + + + * Makefile.maint (GZIP_ENV): Don't use --rsyncable if gzip doesn't + support it. (The latest stable gzip doesn't.) + +2004-04-27 Paul Eggert + + * data/lalr1.cc (Parser::stos_) [! YYDEBUG]: Define even in this + case, as stos_ is now used by destructors due to the 2004-02-09 + change. + + Remove more K&R C support. + * lib/libiberty.y (PARAMS): Remove. All uses removed. + * lib/subpipe.c (errno): Remove decl. + Include unconditionally. + (EXIT_FAILURE): Remove macro. + * src/complain.c (vfprintf, strerror): Remove. + * src/system.h: Include limits.h, stdlib.h, string.h, locale.h + unconditionally. + (EXIT_FAILURE, EXIT_SUCCESS, setlocale): Remove defns. + Use latest Autoconf recommendations for including inttypes.h, stdint.h. + (strchr, strspn, memchr): Remove decls. + * tests/calc.at (_AT_DATA_CALC_Y): Include stdlib.h, string.h + unconditionally. Do not declare perror. + * tests/conflicts.at (%nonassoc and eof): Include stdlib.h + unconditionally. + + * src/complain.c (_): Remove useless defn, as system.h defines this. + + * lib/bitset.h (__INT_TO_PTR): Remove; workaround no longer needed + with latest obstack.h. + * lib/ebitset.c (ebitset_elt_alloc): Don't bother to cast args + to procedure types, as obstack.h now does that for us. + * lib/lbitset.c (lbitset_elt_alloc): Likewise. + + * lib/subpipe.h [HAVE_SYS_TYPES_H]: Include , + so that this include file can stand alone. + * lib/subpipe.c: Do not include , as subpipe.h + does this now. Include subpipe.h first after config.h, to + test whether it can stand alone. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't + declare yyerror when using lalr.cc, as GCC 3.4.0 warns about the + unused declaration. + + * tests/synclines.at (%union synch line): Put a dummy member in + the union, because empty unions aren't allowed in C. Caught + by GCC 3.4.0. + +2004-04-13 Jim Meyering + + * src/conflicts.c (conflicts_print): Correct format string typo: + use `%%' to produce literal `%'. (trivial change) + +2004-03-30 Paul Eggert + + * src/getargs.c (version): Update copyright year to 2004. + + * data/c.m4 (b4_int_type): Use 'short int' rather than + 'short', and similarly for 'long', 'unsigned', etc. + * data/glr.c (YYTRANSLATE, yyconfl, yySymbol, yyItemNum, + yygetLRActions, yyprocessOneStack, yyrecoverSyntaxError, + yy_yypstack, yydumpstack): Likewise. + * data/lalr1.cc (user_token_number_max_, user_token_number_max_, + translate_, seq_, [], pop, Slice, range_, operator+, operator+=): + Likewise. + * data/yacc.c (b4_int_type, yyss, YYSTACK_BYTES, yysigned_char, + yy_stack_print, yyparse): Likewise. + * doc/bison.texinfo (Prologue, Multiple Types): Likewise. + * lib/bbitset.h (bitset_word, BITSET_WORD_BITS): Likewise. + * lib/bitset.c (bitset_print): Likewise. + * lib/bitset_stats.c (bitste_log_histogram_print): Likewise. + * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise. + * lib/bitsetv.c (bitsetv_dump): Likewise. + * lib/ebitset.c (EBITSET_ELT_BITS, ebitset_elt_alloc): Likewise. + * lib/lbitset.c (LBITSET_ELT_BITS, lbitset_elt_alloc, debug_lbitset): + Likewise. + * src/LR0.c (allocate_itemsets): Likewise. + * src/gram.h (rule_number, rule): Likewise. + * src/lalr.h (goto_number): Likewise. + * src/nullable.c (nullable_compute): Likewise. + * src/output.c (prepare_rules): Likewise. + * src/relation.c (relation_print, relation_digraph): Likewise. + * src/relation.h (relation_node): Likewise. + * src/state.h (state_number, transitions, errs, reductions, + struct state): Likewise. + * src/symtab.h (symbol_number, struct symbol): Likewise. + * src/tables.c (vector_number, tally, action_number, + default_goto, goto_actions): Likewise. + * tests/existing.at (GNU Cim Grammar): Likewise. + * tests/regression.at (Web2c Actions): Likewise. + + * src/output.c (muscle_insert_short_int_table): Renamed from + muscle_insert_short_table. All uses changed. + +2004-03-25 Paul Hilfinger + + * src/parse-gram.y: Define PERCENT_EXPECT_RR. + (declaration): Replace expected_conflicts with expected_sr_conflicts. + Add %expect-rr rule. + + * src/scan-gram.l: Recognize %expect-rr. + + * src/conflicts.h (expected_sr_conflicts): Rename from + expected_conflicts. + (expected_rr_conflicts): Declare. + + * src/conflicts.c (expected_sr_conflicts): Rename from + expected_conflicts. + (expected_rr_conflicts): Define. + (conflicts_print): Check r/r conflicts against expected_rr_conflicts + for GLR parsers. + Use expected_sr_conflicts in place of expected_conflicts. + Warn if expected_rr_conflicts used in non-GLR parser. + + * doc/bison.texinfo: Add documentation for %expect-rr. + +2004-03-08 Paul Eggert + + Add support for hex token numbers. Suggested by Odd Arild Olsen in + . + + * NEWS: Document hexadecimal tokens, no NUL bytes, %destructor + in lalr1.cc. + * doc/bison.texinfo (Token Decl): Add hexadecimal token numbers. + * src/scan-gram.l (scan_integer): New function. + ({int}): Use it. + (0[xX][0-9abcdefABCDEF]+): New pattern, to support hex numbers. + (, \\x[0-9abcdefABCDEF]+, + handle_action_dollar, handle_action_at, convert_ucn_to_byte): + Say "long int", not "long", for uniformity with GNU style. + +2004-02-25 Paul Eggert + + * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Ignore stdout from + compilers. This fixes a problem with Intel's C++ compiler being + chatty, reported by Guido Trentalancia in + . + +2004-02-09 Alexandre Duret-Lutz + + Support %destructor and merge error locations in lalr1.cc. + + * data/lalr1.cc (b4_cxx_destruct_def): New macro. + (Parser::stos_): Define unconditionally. + (Parser::destruct_): New method. Generate its body with + b4_yydestruct_generate. + (Parser::error_start_): New attribute. + (Parser::parse) : Call destruct_ on erroneous + token which are discarded. + (Parser::parse) : Update + error_start_ when erroneous token are discarded. + (Parser::parse) : Compute the location of the error + token so that it covers all the discarded tokens. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust so + it can be called with `%skeleton "lalr1.cc"', and do that. + +2004-02-02 Paul Eggert + + * src/Makefile.am (AM_CPPFLAGS): New macro. It mentions + $(top_srcdir)/lib and ../lib. This fixes a bug reported + by Paul Hilfinger; the old INCLUDES value didn't mention ../lib. + There's no need to mention top_builddir since Automake does that + for us. + (INCLUDES): Remove, as Automake says it's obsolescent. + Contents migrated into AM_CPPFLAGS as described above. + * lib/Makefile.am (INCLUDES): Remove; obsolescent. + +2004-01-14 Paul Hilfinger + + * data/glr.c (yytokenName): Bullet-proof against YYEMPTY token. + (yyreportSyntaxError): Handle case where lookahead token is + YYEMPTY. + +2004-01-13 Paul Hilfinger + + * data/glr.c: Put casts on uses of YYREALLOC and YYMALLOC so that + resulting parsers are compilable with C++. + +2003-12-23 Paul Eggert + + * config/depcomp, config/install-sh: Sync with Automake 1.8. + * src/output.c (output_skeleton): Rename local var. + * tests/input.at (Torturing the Scanner): Don't use \x0 or \0 in + Bison tokens, as this runs afoul of the 2003-10-07 change that + disallowed NUL bytes in character constants or string literals. + + * tests/local.at: Require Autoconf 2.59's Autotest. + * tests/testsuite.at: Don't include local.at, since we now assume + Autoconf 2.59 or later. Autoconf 2.59 had some problems with + including it. + * tests/Makefile.am ($(TESTSUITE)): Remove warning about ignoring + multiple inclusion warnings. + +2003-12-02 Akim Demaille + + * doc/bison.texinfo (How Can I Reset the Parser): More about start + conditions. + From Bruno Haible. + +2003-11-18 Alexandre Duret-Lutz + + * doc/bison.texinfo (Bison Options): Escape `@' in `$@'. + +2003-10-07 Paul Eggert + + * tests/Makefile.am (clean-local): Don't run 'testsuite --clean' + if testsuite doesn't exist. + + * doc/bison.texinfo (Symbols): NUL bytes are not allowed in string + literals, unfortunately. + * src/scan-gram.l (): + Complain about NUL bytes in character constants or string literals. + +2003-10-05 Paul Eggert + + * NEWS: Don't document %no-default-prec, as it's still + too experimental. + * doc/bison.texinfo: Document %no-default-prec only if + the defaultprec flag is set. Normally it's not. + +2003-10-04 Paul Eggert + + * data/glr.c (b4_rhs_value, b4_rhs_location): Yield a + non-modifiable lvalue, instead of a modifiable one. + * doc/bison.texinfo (Actions): Document that $$ can + be assigned to. Do not claim that $$ and $N are + array element references: user code should not rely on this. + +2003-10-01 Paul Eggert + + * src/parse-gram.h (PERCENT_NO_DEFAULT_PREC): New token. + (grammar_declaration): Use it. + * src/scan-gram.l: New token %no-default-prec. + * tests/conflicts.at: Revamp tests to use %no-default-prec. + * NEWS, doc/bison.texinfo: Document the above. + +2003-10-01 Akim Demaille + + VCG no longer supports long_straight_phase. + + * src/vcg.c, src/vcg.h: Remove the handling of long_straight_phase. + * src/print_graph.c (print_graph): Adjust. + +2003-09-30 Frank Heckenbach + and Paul Eggert + + * doc/bison.texinfo (Decl Summary, Contextual Precedence, + Table of Symbols): Document %default-prec. + * src/parse-gram.y (PERCENT_DEFAULT_PREC): New token. + (grammar_declaration): Set default_prec on %default-prec. + * src/scan-gram.l (%default-prec): New token. + * src/reader.h (default_prec): New flag. + * src/reader.c: Likewise. + (packgram): Handle it. + * tests/conflicts.at (%default-prec without %prec, + %default-prec with %prec, %default-prec 1): New tests. + +2003-09-30 Paul Eggert + + * tests/testsuite.at: Include local.at, not input.at, fixing + a typo in the 2003-08-25 patch. + +2003-08-27 Akim Demaille + + * data/lalr1.cc (yyparse) [__GNUC__]: "Use" yyerrorlab to pacify + GCC warnings. + +2003-08-26 Akim Demaille + + * config/announce-gen (print_changelog_deltas): Neutralize "<#" as + "<\#" to avoid magic from Gnus when posting parts of this script. + +2003-08-26 Akim Demaille + + * data/lalr1.cc (Parser::report_syntax_error_): New, extracted from + (Parser::parse): here. + Adjust: nerrs and errstatus is now replaced by... + (Parser::nerrs_, Parser::errstatus_): New. + +2003-08-25 Akim Demaille + + * config/announce-gen, Makefile.cfg: New. + * Makefile.am: Adjust. + * GNUmakefile, Makefile.maint: Update from CVS Autoconf, but + keeping local WGET and WGETFLAGS modifications from Paul Eggert. + +2003-08-25 Akim Demaille + + When reducing initial empty rules, Bison parser read an initial + location that is not defined. This results in garbage, and that + affects Bison's own parser. Therefore we need (i) to extend Bison + to support a means to initialize this location, and (ii) to use + this CVS Bison to fix CVS Bison's parser. + + * src/reader.h, reader.c (epilogue_augment): Remove, replace + with... + * src/muscle_tab.h, src/muscle_tab.c (muscle_code_grow): this. + * src/parse-gram.y: Adjust. + (%initial-action): New. + (%error-verbose): Since we require CVS Bison, there is no reason + not to use it. + * src/scan-gram.l: Adjust. + * src/Makefile.am (YACC): New, to make sure we use our own parser. + * data/yacc.c (yyparse): Use b4_initial_action. + +2003-08-25 Akim Demaille + + * doc/bison.texinfo: Don't promote stdout for error messages. + +2003-08-25 Akim Demaille + + * data/lalr1.cc (Parser::reduce_print_): Remove unused yyi. + From Alexandre Duret-Lutz. + +2003-08-25 Akim Demaille + + Version 1.875c. + +2003-08-25 Akim Demaille + + * data/lalr1.cc (Parser::stack_print_, YY_STACK_PRINT): New. + Use them. + +2003-08-25 Akim Demaille + + * data/lalr1.cc (Parser::reduce_print_): New. + Use it. + +2003-08-25 Akim Demaille + + Have lalr1.cc catch with Paul Eggert's patch to fix the infinite + error recovery loops. This patch is based on + . + Also, augment the similarity between lalr1.cc and yacc.c. + Note: the locations of error recovery rules are not correct yet. + + * data/lalr1.cc: Comment changes to augment the similarity between + lalr1.cc and yacc.c. + (YYERROR): Goto to yyerrorlab, not yyerrlab1. + (yyerrlab1): Remove, but where it used to be (now the bottom part of + yyerrlab), when hitting EOF, pop the whole stack here instead of + merely falling thru the default error handling mechanism. + (yyerrorlab): New label, with the old contents of YYERROR, + plus the following change: pop the stack of rhs corresponding + to the production that invoked YYERROR. That is how Yacc + behaves (required by POSIX). + * tests/calc.at (AT_CHECK_CALC_LALR1_CC): No longer expected to + fail. + +2003-08-25 Akim Demaille + + Tune local.at so that people can "autom4te -l autotest calc.at -o + calc" for instance, to extract a sub test suite. + + * tests/testsuite.at: Move the initialization, Autotest version + requirement, and AT_TESTED invocation into... + * tests/local.at: here. + * tests/testsuite.at: Include it for compatibility with Autoconf + 2.57. + * tests/Makefile.am ($(TESTSUITE)): Report that the warning should + be ignore. + +2003-08-04 Paul Eggert + + Rework code slightly to avoid gcc -Wtraditional warnings. + * data/glr.c (yyuserMerge): Return void, not YYSTYPE. + The returned value is now stored in *YY0. All callers changed. + * src/output.c (merge_output): Adjust to the above change. + +2003-07-26 Paul Eggert + + * data/glr.c (YYASSERT): New macro. + (yyfillin, yydoAction, yyglrReduce, yysplitStack, + yyresolveStates, yyprocessOneStack): + Use `YYASSERT (FOO);' rather than `if (! (FOO)) abort ();'. + Derived from a suggestion by Frank Heckenbach. + +2003-07-25 Paul Eggert + + * data/glr.c (yyglrReduce): Don't use C89 string concatenation, + for portability to K&R C (after ansi2knr, presumably). See + + by Frank Heckenbach, though I have omitted the structure-initialization + part of his glr-knr.diff patch since I recall that the Portable + C Compiler didn't require that change. + + Let the user specify how to allocate and free memory. + Derived from a suggestion by Frank Heckenbach in + . + * data/glr.c (YYFREE, YYMALLOC, YYREALLOC): New macros. + All uses of free, malloc, realloc changed to use these macros, + and unnecessary casts removed. + * data/yacc.c (YYFREE, YYMALLOC): Likewise. + +2003-07-06 Matthias Mann + + * data/lalr1.cc (operator<<(std::ostream&, const Position&)): + use s.empty() rather than s == "" to test for empty string; see + + (trivial change) + +2003-06-25 Akim Demaille + + * config/depcomp, config/install-sh: Update from masters. + +2003-06-20 Paul Eggert + + * data/glr.c (YYLLOC_DEFAULT): Parenthesize arguments as needed, + and return properly parenthesized result. + * data/lalar1.cc (YYLLOC_DEFAULT): Likewise. + * data/yacc.c (YYLLOC_DEFAULT): Likewise. + Remove unnecessary parentheses from uses. + * doc/bison.texinfo (Location Default Action): Describe the + conventions for parentheses. + +2003-06-19 Paul Eggert + + * data/glr.c (yyremoveDeletes, yy_reduce_print, yyglrReduce, + yyreportTree): Do not assume that size_t is the same width as int, + when printing sizes. Print sizes using an unsigned format. + Problem reported by Frank Heckenbach in + . + + Port to Forte Developer 7 C compiler. + * data/glr.c (struct YYLTYPE): If locations are not being used, + declare a single dummy member, as empty structs do not conform + to the C standard. + (YYERROR, YYBACKUP): Do not use "do { ...; return foo; } while (0)"; + the Forte Developer 7 C compiler complains that end-of-loop + code is not reached. + +2003-06-17 Paul Eggert + + * lib/libiberty.h (PARAMS): Spell argument as Args, not as X, to + avoid warnings from picky compilers about redefinition of PARAMS. + +2003-06-17 Paul Eggert + + Version 1.875b. + + * NEWS: Document 1.875b. + + * lib/bbitset.h: Do not include config.h; that's the includer's job. + Do not include ; shouldn't be needed on a C89 host. + * lib/bitset.h (bitset_compatible_p): Indent as per GNU standard. + Don't use 'index' in comments, as it's a builtin fn on some hosts. + * lib/bitset_stats.c: Include gettext.h unconditionally, as + per recent gettext manual's suggestion. + * lib/ebitset.c (ebitset_resize, ebitset_unused_clear): + Use prototypes, not old-style definitions. + * lib/lbitset.c (lbitset_unused_clear): Likewise. + * lib/vbitset.c (vbitset_resize, vbitset_ones, vbitset_zero, + vbitset_empty_p, vbitset_copy1, vbitset_not, vbitset_equal_p, + vbitset_subset_p, vbitset_disjoint_p, vbitset_and, vbitset_and_cmp, + vbitset_andn, vbitset_andn_cmp, vbitset_or, vbitset_or_cmp, + vbitset_xor, vbitset_xor_cmp, vbitset_and_or, vbitset_and_or_cmp, + vbitset_andn_or, vbitset_andn_or_cmp, vbitset_or_and, + vbitset_or_and_cmp, vbitset_copy): Likewise. + + * lib/libiberty.h: Do not include config.h; that's the includer's job. + Do not include . + (PARAMS): Define unconditionally for C89. + (ATTRIBUTE_NORETURN): Remove. + (ATTRIBUTE_UNUSED): Define unconditionally. + + Upgrade to 2003-06-08 libbitset, submitted by Michael Hayes in: + + * lib/Makefile.am (bitsets_sources): Add vbitset.c, vbitset.h. + * lib/vbitset.c, lib/vbitset.h: New files. + * lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h, + lib/bitset_stats.c, lib/ebitset.c, lib/lbitset.c: Import + from libbitset. + + * doc/bison.texinfo (How Can I Reset the Parser): Renamed from + `How Can I Reset @code{yyparse}', since texinfo does not allow + arbitrary @ in node names. + + * m4/Makefile.am (EXTRA_DIST): Add the following files, which + shouldn't be needed according to the gettext 0.12.1 documentation + but which seem to be needed anyway: codeset.m4 glibc21.m4 + intdiv0.m4 inttypes-pri.m4 inttypes.m4 inttypes_h.m4 isc-posix.m4 + lcmessage.m4 nls.m4 po.m4 stdint_h.m4 uintmax_t.m4 ulonglong.m4. + * po/Makefile.in.in: Upgrade to gettext 0.12.1 version. + + * lib/.cvsignore: Add stdbool.h. + * m4/.cvsignore: Add nls.m4, po.m4. + + Upgrade to CVS gnulib. + * stdbool_.h: File renamed from stdbool.h.in. + * configure.ac (AM_STDBOOL_H): Invoke this instead of + AC_HEADER_STDBOOL. + (AM_GNU_GETTEXT): Put brackets around args, as latest manual suggests. + (AM_GNU_GETTEXT_VERSION): Update to 0.12.1. + * lib/Makefile.am (EXTRA_DIST): Add stdbool_.h. + (MOSTLYCLEANFILES): New var. + ($(libbison_a_OBJECTS)): Depend on $(STDBOOL_H). + (stdbool.h): New rule. + * lib/dirname.c, lib/dirname.h, lib/hash.c, lib/hash.h, + lib/malloc.c, lib/obstack.h, lib/quote.c, lib/realloc.c, + lib/strcasecmp.c, lib/xalloc.h, m4/alloca.m4, m4/onceonly.m4, + m4/quote.m4: Upgrade to today's gnulib. + + * tests/calc.at (AT_CHECK_CALC): New option EXPECTED-TO-FAIL. + (AT_CHECK_CALC_LALR1_CC): Use it, since the C++ LALR parser fails + the tests right now. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Ensure yylex and + yyerror are declared before use; C99 requires this. + +2003-06-09 Paul Hilfinger + + * data/glr.c (YYERROR): Update definition to reset yyerrState to 0 + first. + (yyrecoverSyntaxError): Correct the logic for setting and testing + yyerrState. + Correct comment on handling EOF. + Allow states with only a default reduction, rather than failing + (I can't quite reconstruct why these were not allowed before). + + Fixes to avoid problem that $-N rules in GLR parsers can cause + buffer overruns, corrupting state. + + * src/output.c (prepare_rules): Output max_left_semantic_context + definition. + * src/reader.h (max_left_semantic_context): New variable declaration. + * src/scan-gram.l (max_left_semantic_context): Define. + (handle_action_dollar): Update max_left_semantic_context. + * data/glr.c (YYMAXLEFT): New definition. + (yydoAction): Increase size of yyrhsVals by YYMAXLEFT. + (yyresolveAction): Ditto. + + Fixes to problems with location handling in GLR parsers reported by + Frank Heckenbach (2003/06/05). + + * data/glr.c (YYLTYPE): Make trivial if locations not used. + (YYRHSLOC): Add parentheses, and define only if locations used. + (YYLLOC_DEFAULT): Add parentheses, and give trivial definition if + locations not used. + (yyuserAction): Use YYLLOC_DEFAULT to set *yylocp. + (yydoAction): Remove redundant initialization of *yyvalp and *yylocp. + + * tests/cxx-type.at: Exercise location information; update tests + to differentiate output with and without locations. + Remove forward declarations of yylex and yyerror---caused errors + because default YYLTYPE not yet defined. + Change semantic actions to compute strings, rather than printing + them directly (to test proper passing of semantics values). Change + output to prefix notation and update test data and expected results. + (yylex): Track locations. + (stmtMerge): Return value rather than printing, and include arguments + in value. + +2003-06-03 Paul Eggert + + Avoid warnings generated by GCC 2.95.4 when Bison is + configured with --enable-gcc-warnings. + * data/lalr1.cc (yy::]b4_parser_class_name[::parse, + yy::]b4_parser_class_name[::translate_, + yy::Stack::operator[] (unsigned), + yy::Stack::operator[] (unsigned) const, + yy::Slice::operator[] (unsigned), + yy::Slice::operator[] (unsigned) const): + Rename local vars to avoid warnings. + * tests/glr-regression.at (Improper handling of embedded actions + and $-N in GLR parsers): Remove unused local variable from yylex. + * tests/regression.at (_AT_DATA_DANCER_Y): Declare yylex to take + (void) as arg when not pure, since we now assume C89 when building + Bison. Pacify GCC by using parameter. + +2003-06-02 Paul Eggert + + * data/lalr1.cc (yy::Position::lines, yy::Position::columns, + yy::Location::lines, yy::Location::columns): Rename arguments + to avoid shadowing; this removes a warning generated by GCC 3.3. + +2003-06-01 Paul Eggert + + Don't pass C-only warning optins (e.g., -Wmissing-declarations) + to g++, as GCC 3.3 complains if you do it. + * configure.ac (WARNING_CXXFLAGS): New subst. Set it to + everything that WARNING_CFLAGS has, except omit warnings + not suitable for C++. + (AC_PROG_CXX): Use this instead of AC_CHECK_PROGS([CXX], [g++]). + * tests/atlocal.in (CXXFLAGS): New var. + * tests/local.at (AT_COMPILE_CXX): Use it instead of CFLAGS. + + Fix a GLR parser bug I reported in February; see + . + The problem was that GLR parsers did not conform to the C standard, + because actions like { $1 = $2 + $3; } expanded to expressions + that invoked YYFILL in separate subexpressions, and YYFILL assigned + to a local variable. The C standard says that expressions + like (var = f ()) + (var = f ()) have undefined behavior. + Another problem was that GCC sometimes issues warnings that + yyfill and its parameters are unused. + + * data/glr.c (yyfillin): Renamed from the old yyfill. Mark + as possibly unused. + (yyfill): New function. + (YYFILL): Use it. + (yyuserAction): Change type of yynormal to bool, so that it matches + the new yyfill signature. Mark it as possibly unused. + + + Follow up on a bug I reported in February, where a Bison-generated + parser can loop. Provide a test case and a fix for yacc.c. I + don't have a fix for lalr1.cc or for glr.c, unfortunately. + The original bug report is in: + + + * data/yacc.c (YYERROR): Now just 'goto yyerrorlab', since the + macro's size was becoming unwieldy. + (yyerrlab): Do not discard an empty lookahead symbol, as this + might destroy garbage. + (yyerrorlab): New label, with the old contents of YYERROR, + plus the following change: pop the stack of rhs corresponding + to the production that invoked YYERROR. That is how Yacc + behaves, and POSIX requires this behavior. + (yyerrlab1): Use YYPOPSTACK instead of its definiens. + * tests/calc.at (_AT_DATA_CALC_Y): Include unistd.h if available. + Define 'alarm' to do nothing if unistd.h is not available. + Add a new rule "exp: '-' error;" to test the above change to + data/yacc.c. Use 'alarm' to abort any test taking longer than + 10 seconds, as it's probably looping. + (AT_CHECK_CALC): Test recovery from error in new grammar rule. + Also, the new yacc.c generates two fewer diagnostics for an + existing test. + +2003-05-24 Paul Eggert + + * data/glr.c (YYSTACKEXPANDABLE): Do not evaluate + YYSTYPE_IS_TRIVIAL or YYSTYPE_IS_TRIVIAL unless they are defined. + This fixes a problem reported by John Bowman when the Compaq/HP + Alpha cxx compiler happy (e.g. using cxx -D__USE_STD_IOSTREAM + -ansi -Wall -gall). + * data/yacc.c (union yyalloc): Likewise. + (YYCOPY): Do not evaluate __GNUC__ unless it is defined. + + Switch from 'int' to 'bool' where that makes sense. + + * lib/abitset.c (abitset_test, abitset_empty_p, abitset_equal_p, + abitset_subset_p, abitset_disjoint_p, abitset_and_cmp, + abitset_andn_cmp, abitset_or_cmp, abitset_xor_cmp, abitset_and_or, + abitset_and_or_cmp, abitset_andn_or_cmp, abitset_or_and_cmp): + Return or accept bool, not int. All callers changed. + * lib/bbitset.h: (bitset_toggle_, bitset_copy_, bitset_and_or_cmp_, + bitset_andn_or_cmp_, bitset_or_and_cmp_): Likewise. + * lib/bitset.c (bitset_only_set_p, bitset_print, bitset_toggle_, + bitset_copy_, bitset_op4_cmp, bitset_and_or_cmp_, bitset_andn_or_cmp_, + bitset_or_and_cmp_): Likewise. + * lib/bitset.h (bitset_test, bitset_only_set_p): Likewise. + * lib/bitset_stats.c (bitset_stats_print, bitset_stats_toggle, + bitset_stats_test, bitset_stats_empty_p, bitset_stats_disjoint_p, + bitset_stats_equal_p, bitset_stats_subset_p, bitset_stats_and_cmp, + bitset_stats_andn_cmp, bitset_stats_or_cmp, bitset_stats_xor_cmp, + bitset_stats_and_or_cmp, bitset_stats_andn_or_cmp, + bitset_stats_or_and_cmp): Likewise. + * lib/ebitset.c (ebitset_elt_zero_p, ebitset_equal_p, ebitset_copy_cmp, + ebitset_test, ebitset_empty_p, ebitset_subset_p, ebitset_disjoint_p, + ebitset_op3_cmp, ebitset_and_cmp, ebitset_andn_cmp, ebitset_or_cmp, + ebitset_xor_cmp): Likewise. + * lib/lbitset.c (lbitset_elt_zero_p, lbitset_equal_p, lbitset_copy_cmp, + lbitset_test, lbitset_empty_p, lbitset_subset_p, lbitset_disjoint_p, + lbitset_op3_cmp, lbitset_and_cmp, lbitset_andn_cmp, lbitset_or_cmp, + lbitset_xor_cmp): Likewise. + * lib/bbitset.h: Include . + (struct bitset_vtable): The following members now return bool, not + int: toggle, test, empty_p, disjoint_p, equal_p, subset_p, + and_cmp, andn_cmp, or_cmp, xor_cmp, and_or_cmp, andn_or_cmp, + or_and_cmp). + * src/conflicts.c (count_rr_conflicts): Likewise. + * lib/bitset_stats.h (bitset_stats_enabled): Now bool, not int. + All uses changed. + * lib/ebitset.c (ebitset_obstack_init): Likewise. + * lib/lbitset.c (lbitset_obstack_init): Likewise. + * src/getargs.c (debug_flag, defines_flag, locations_flag, + no_lines_flag, no_parser_flag, token_table_flag, yacc_flag, + graph_flag): Likewise. + * src/getargs.h (debug_flag, defines_flag, locations_flag, + no_lines_flag, no_parser_flag, token_table_flag, yacc_flag, + graph_flag): Likewise. + * src/output.c (error_verbose): Likewise. + * src/output.h (error_verbose): Likewise. + * src/reader.c (start_flag, typed): Likewise. + * src/reader.h (typed): Likewise. + * src/getargs.c (LOCATIONS_OPTION): New constant. + (long_options, getargs): Use it. + * src/lalr.c (build_relations): Use bool, not int. + * src/nullable.c (nullable_compute): Likewise. + * src/print.c (print_reductions): Likewise. + * src/tables.c (action_row, pack_vector): Likewise. + * src/muscle_tab.h (MUSCLE_INSERT_BOOL): New macro. + * src/output.c (prepare): Use it. + * src/output.c (token_definitions_output, + symbol_destructors_output, symbol_destructors_output): Use string, + not boolean integer, to keep track of whether to output separator. + * src/print_graph.c (print_core): Likewise. + * src/state.c (state_rule_lookaheads_print): Likewise. + + * config/install-sh: Sync from automake 1.7.5. + +2003-05-14 Paul Eggert + + * src/parse-gram.y (rules_or_grammar_declaration): Require a + semicolon after a grammar declaration, in the interest of possible + future changes to the Bison input language. + Do not allow a stray semicolon at the start of the grammar. + (rhses.1): Allow one or more semicolons after any rule, including + just before "|" as required by POSIX. + * tests/input.at (Torturing the Scanner): Add tests for ";|" in a + grammar. + +2003-05-14 Alexandre Duret-Lutz + + %parse-param support for lalr1.cc. + + * data/lalr1.cc (b4_parse_param_decl, b4_parse_param_cons, + b4_cc_constructor_calls, b4_cc_constructor_call, + b4_parse_param_vars, b4_cc_var_decls, b4_cc_var_decl): New m4 + definitions. + (yy::b4_parser_class_name::b4_parser_class_name): Take extra + parse-param arguments. + (yy::b4_parser_class_name): Declare instance variables to + hold parse-param arguments. + * tests/calc.at: s/value/semantic_value/ because value clashes + with a member of yy::b4_parser_class_name. Adjust C++ code + to handle %parse-param. Enable %parse-param test in C++. + +2003-05-12 Paul Eggert + + * doc/bison.texinfo (How Can I Reset @code{yyparse}): Reword the + English a bit. Fix fclose typo. Change "const char" to "char + const", and use ANSI C rather than K&R for "main". Suggest + YY_FLUSH_BUFFER over yyrestart (as that is what Flex recommends) + and suggest yy_switch_to_buffer. + +2003-05-05 Paul Eggert + + * lib/bitset.h (__INT_TO_PTR): Define to a value that presumes + C89. This avoids a diagnostic on compilers that define __STDC__ + to 0, fixing a problem with Tru64 cc reported by Martin Mokrejs in + . + +2003-05-03 Paul Eggert + + * lib/bitset.h (BITSET_FOR_EACH, BITSET_FOR_EACH_REVERSE): + Do not overrun array bounds. + This should fix a bug reported today by Olatunji Oluwabukunmi in + . + +2003-04-29 Akim Demaille + + * src/gram.h, src/gram.c (pure_parser, glr_parser): Move to... + * src/getargs.c, src/getargs.h: here, as bool, not int. + (nondeterministic_parser): New. + * src/parse-gram.y, src/scan-gram.l: Support + %nondeterministic-parser. + * src/output.c (prepare): Use nondeterministic_parser instead + of glr_parser where appropriate. + * src/tables.c (conflict_row, action_row, save_row) + (token_actions, token_actions, pack_vector): Ditto. + +2003-04-29 Akim Demaille + + * doc/bison.texinfo (C++ Parsers, Implementing Loops): New. + +2003-04-29 Akim Demaille + + * tests/calc.at: Also test yacc.c and glr.c (but not lalr1.cc yet) + with %pure-parser and %locations to exercise the patch from Yakov + Markovitch below. + +2003-04-28 Tim Van Holder + + * data/yacc.c: (b4_lex_param): Corrected for the case where + %lex-param is provided and %pure-parser isn't. + +2003-04-27 Paul Eggert + + Avoid gcc -Wundef warnings reported by Gerald Pfeifer in + . + * data/yacc.c (YYSTACK_ALLOC): Don't evaluate YYSTACK_USE_ALLOCA + if it is not defined. + (YYMAXDEPTH): Don't evaluate YYMAXDEPTH if it is not defined. + +2003-04-26 Paul Eggert + + * data/lalr1.cc (yy::Parser::pact_ninf_, yy::Parser::table_ninf_): + Declare to be of type suitable for the ninf value itself, not of + type suitable for the corresponding table, since the latter might + be unsigned but the ninf value might be negative. This fixes a + bug reported by Alexandre Duret-Lutz in + . + + * configure.ac (AC_FUNC_ERROR_AT_LINE): Remove, since gl_ERROR + invokes it. We shouldn't invoke it twice because it will attempt + to put error.o in the archive twice. This fixes a glitch reported + by Martin Mokrejs in + . + +2003-04-21 Paul Eggert + + * m4/error.m4: Update from Bruno Haible's 2003-04-14 patch + to gnulib. + +2003-04-21 Yakov Markovitch + + * data/glr.c (yyexpandGLRStack) [!YYSTACKEXPANDABLE]: + Fix obvious typo that results in uncompilable GLR parsers + when both %pure-parser and %locations are used. (trivial change) + +2003-04-17 Paul Eggert + + * src/scan-gram.l: Add %option nounput, since we no longer use unput. + (unexpected_eof): Renamed from unexpected_end_of_file, for brevity. + Do not insert the expected token via unput, as this runs afoul + of a POSIX-compatibility bug in flex 2.5.31. + All uses changed to BEGIN the parent state, + since we no longer insert the expected token via unput. + * tests/regression.at (Invalid inputs): Remove cascaded diagnostic + that is no longer emitted after the above change. + + * src/conflicts.c (set_conflicts): Resolve all conflicts, not just + the first one. This change is from Paul Hilfinger, and it fixes + regression reported by Werner Lemberg in + . + + (resolve_sr_conflict): Don't invoke state_errs_set + unless one or more tokens have been explicitly made errors. + Otherwise, the above change causes Bison to abort. + + * tests/existing.at (GNU pic Grammar): New test case, taken from + Lemberg's email. + +2003-03-31 Akim Demaille + + * doc/Makefile.am (AM_MAKEINFOFLAGS): Don't split the info file. + +2003-03-31 Akim Demaille + + * src/output.c (prepare_symbols): Avoid trailing spaces in the + output. + +2003-03-31 Akim Demaille + + * doc/bison.texinfo (Strings are Destroyed): s/losses/loses/. + From Paul Hilfinger. + +2003-03-29 Akim Demaille + + * m4/error.m4: Do not put under dynamic conditions some code which + expansion is under static control. + +2003-03-29 Akim Demaille + + * doc/bison.texinfo (How Can I Reset @code{yyparse}): New. + +2003-03-29 Akim Demaille + + * doc/bison.texinfo (Strings are Destroyed): New. + +2003-03-13 Paul Eggert + + * .cvsignore: Add configure.lineno. + * src/.cvsignore: Add yacc. + * tests/.cvsignore: Add testsuite.log. + * doc/fdl.texi: Sync with latest FSF version. + +2003-03-12 Paul Eggert + + * scan-gram.l (YY_USER_INIT): Initialize code_start, too. + (<>, <>): Set *loc to the scanner + cursor, instead of leaving it undefined. This fixes a bug + reported by Tim Van Holder in + . + * tests/input.at (Torturing the Scanner): Test the scanner on + an empty input file, which was Tim Van Holder's test case. + + * m4/timevar.m4 (BISON_PREREQ_TIMEVAR): When checking whether + can be included, include sys/time.h and + sys/times.h first, if available. This works around the SunOS + 4.1.4 porting bug reported by Bruce Becker in + . + + * m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't + AC_CHECK_HEADERS([sys/wait.h]), as this interferes with + AC_HEADER_SYS_WAIT. + + Merge changes from gnulib. This was prompted because the CVS + snapshot didn't build on Solaris 7 due to strnlen problems. + + These changes need to be merged back into gnulib: + * lib/hash.c: Include unconditionally. + * m4/onceonly.m4 (m4_quote): New macro. + (AC_CHECK_HEADERS_ONCE, AC_CHECK_FUNCS_ONCE, AC_CHECK_DECLS_ONCE): + Quote AC_FOREACH variable-expansions properly. + The 2003-01-03 obstack.h change also needs merging. + {end of changes requiring merging} + + * lib/stdbool.h.in, m4/alloca.m4, m4/dirname.m4, m4/dos.m4, + m4/getopt.m4, m4/hash.m4, m4/malloc.m4, m4/memchr.m4, + m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/quote.m4, + m4/quotearg.m4, m4/realloc.m4, m4/stpcpy.m4, m4/strnlen.m4, + m4/strtol.m4, m4/strtoul.m4, m4/unlocked-io.m4, m4/xalloc.m4: + New files, imported from gnulib. + * m4/Makefile.am (EXTRA_DIST): Add the new m4/*.m4 files mentioned + above. + + * lib/mbswidth.c, m4/error.m4, m4/mbrtowc.m4, m4/mbswidth.m4, + m4/memcmp.m4, m4/prereq.m4, m4/stdbool.m4: Update to current + gnulib sources. + + * configure.ac (gl_DIRNAME, gl_GETOPT, gl_HASH, gl_QUOTE, gl_XALLOC): + Add. + (gl_ERROR): New, replacing jm_PREREQ_ERROR. + (gl_FUNC_ALLOCA): New, replacing AC_FUNC_ALLOCA. + (gl_FUNC_STPCPY): New, replacing AC_REPLACE_FUNCS(stpcpy). + (gl_FUNC_STRNLEN): New, replacing AC_FUNC_STRNLEN. + (gl_MBSWIDTH): New, replacing jm_PREREQ_MBSWIDTH. + (gl_OBSTACK): New, replacing AC_FUNC_OBSTACK. + (gl_QUOTEARG): New, replacing jm_PREREQ_QUOTEARG. + (jm_FUNC_GLIBC_UNLOCKED_IO, gl_FUNC_STPCPY, gl_FUNC_STRTOL): New. + (jm_FUNC_MALLOC): New, replacing AC_FUNC_MALLOC. + (jm_FUNC_REALLOC): New, replacing AC_FUNC_REALLOC. + (jm_PREREQ_ARGMATCH): Remove. + (AC_REPLACE_FUNCS): Remove memchr, memrchr, stpcpy, strtol, strtoul. + * lib/Makefile.am (libbison_a_SOURCES): Add argmatch.c, argmatch.h. + + * src/system.h: Include unconditionally. + + * lib/bbitset.h: Include unconditionally. We have been + assuming at least C89 in the bitset code for some time now. + +2003-03-03 Akim Demaille + + * ro.po: New. + +2003-03-02 Akim Demaille + + * doc/bison.texinfo (Table of Symbols): Reactivate the + documentation for %lex-param, and %parse-param. + +2003-03-02 Akim Demaille + + * data/yacc.c, data/glr.c, data/lal1.cc: Use similar code to + generate verbose error messages. + Use the number of tokens as an upper bound in yytname, as it + cannot be a non terminal. + +2003-03-02 Akim Demaille + + * tests/regression.at (_AT_DATA_DANCER_Y): Fix the expected error + message. + +2003-03-02 Akim Demaille + + * tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New. + Use them to exercise yycheck overrun. + Based on Andrew Suffield's grammar. + +2003-03-02 Akim Demaille + + Create tests/local.at for Bison generic testing macros. + + * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Move to... + * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): + This new file. + * tests/calc.at (AT_CHECK_CALC): Adjust. + * tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR) + (AT_COMPILE, AT_COMPILE_CXX, AT_PARSER_CHECK): Move to... + * tests/local.at: here. + (AT_COMPILE_CXX): Tags the tests using it as c++. + Ignore the test if CXX is not functional. + +2003-03-01 Paul Eggert + + * src/scan-gram.l (code_start): Initialize it to scanner_cursor, + not loc->end, since loc->end might contain garbage and this leads + to undefined behavior on some platforms. + (id_loc, token_start): Use (IF_LINTed) initial values that do not + depend on *loc, so that the reader doesn't give the the false + impression that *loc is initialized. + ("%%"): Do not bother setting code_start, since its value + does not survive the return. + +2003-03-01 Akim Demaille + + * src/scan-gram.l (code_start): Always initialize it when entering + into yylex, as SC_EPILOGUE is activated *before* the corresponding + yylex invocation. An alternative would be making it static, but + then it starts with the second %%'s beginning, instead of its end. + +2003-02-28 Paul Eggert + + * lib/mbswidth.c: Include before "mbswidth.h", to work + around a UnixWare 7.1.1 porting bug reported by John Hughes in + . + +2003-02-26 Paul Eggert + + * README: Mention compiler bug in Sun Forte Developer 6 update 2. + Remove Sequent/Pyramid discussion (nobody uses them any more). + Merge VMS and MS-DOS discussion; these ports may well be dead + but let's keep mentioning them for now. Put <> around email + addresses. Add copyright notice. + +2003-02-24 Paul Eggert + + * data/glr.c (yy_reduce_print): yylineno -> yylno, + to avoid collision with flex use of yylineno. + Problem reported by Bruce Lilly in + . + * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise. + * data/yacc.c (yy_reduce_print): Likewise. + + * config/depcomp: Sync with Automake 1.7.3. + +2003-02-21 Akim Demaille + + * data/lalr1.cc: Use temporary variables instead of casts to + change integer types. + Suggested by Paul Eggert. + +2003-02-21 Akim Demaille + + * doc/bison.texinfo: Use "location" consistently to refer to @n, + to avoid confusions with lalr1.cc's notion of Position. + Suggested by Paul Eggert. + +2003-02-20 Akim Demaille + + * data/lalr1.cc (position.hh): Make sure "columns" never pushes + before initial_columns. + (location.hh): Use consistent variable names when defining the + operator<<. + Use "last" so that we subtract from Positions, not from unsigned. + +2003-02-20 Akim Demaille + + * data/lalr1.cc (position.hh): New subfile, including the extended + and Doxygen'ed documentation of class Position. + (location.hh): Use it. + Document a` la Doxygen. + With the help of Benoit Perrot. + +2003-02-20 Akim Demaille + + * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Define + AT_YACC_IF. + Redefine AT_YYERROR_SEES_LOC_IF using it. + (_AT_DATA_CALC_Y): Don't declare yyerror when lalr1.cc, as it is + not defined. + Don't use the location in yy::Parser::error_ and + yy::Parser::print_ when not %locations. + Activate more lalr1.cc tests. + +2003-02-19 Akim Demaille + + * data/lalr1.cc: When displaying a line number, be sure to make it + an int. + +2003-02-19 Akim Demaille + + * data/lalr1.cc (b4_stack_depth_init, yy::Parser::initdepth_): + Remove, useless. + (YYABORT, YYACCEPT, YYERROR): New. + * tests/calc.at: Renable the lalr1.cc test. + +2003-02-19 Akim Demaille + + * tests/calc.at (AT_CHECK_CALC): Check different scenarios of + error recovery, mixing with/without pops and discarding of the + lookahead. + Exercise YYERROR. + Disable the lalr1.cc tests as currently it doesn't support YYERROR. + +2003-02-17 Paul Eggert + + * tests/atlocal.in (LDFLAGS, LIBS): New vars. + * tests/testsuite.at (AT_COMPILE): Use them. + This fixes the testsuite problem reported by Robert Lentz in + . + +2003-02-12 Paul Eggert + + * data/yacc.c (yyerrlab) [YYERROR_VERBOSE]: + Avoid subscript error in yycheck. Bug reported by Andrew Suffield in + . + * data/glr.c (yyreportSyntaxError) [YYERROR_VERBOSE]: Likewise. + Check for malloc failure, for consistency with yacc.c. + (yytname_size): Remove, for consistency with yacc.c. + + The bug still remains in data/lalr1.cc, as I didn't have time + to fix it there. + +2003-02-06 Akim Demaille + + * configure.ac (GXX): Rename as... + (CXX): this, to keep the original Autoconf semantics. + Require 2.57. + * data/lalr1.cc: Fix b4_copyright invocations. + If YYDEBUG is not defined, don't depend upon name_ being defined. + (location.hh): Include string and iostream. + (Position::filename): New member. + (Position::Position ()): New. + (operator<< (Position)): New. + (operator- (Position, int)): New. + (Location::first, Location::last): Rename as... + (Location::begin, Location::end): these, to mock the conventional + iterator names. + (operator<< (Location)): New. + * tests/atlocal.in (CXX): New. + * tests/testsuite.at (AT_COMPILE_CXX): New. + * tests/calc.at (_AT_DATA_CALC_Y): Adjust yyerror to report the + locations in a more synthetic way. + (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF is positive if + lalr1.cc is used. + Adjust the C locations to match those from Emacs: first column is + column 0. + Change all the expected results. + Conform to the GCS: simplify the locations when applicable. + (LOC, VAL, YYLLOC_FORMAL, YYLLOC_ARG, USE_YYLLOC, LEX_FORMALS) + (LEX_ARGS, USE_LEX_ARGS, LEX_PRE_FORMALS, LEX_PRE_ARGS): Replace + these CPP macros with the m4 macros new defined by... + (AT_CHECK_PUSHDEFS): this, i.e.: + (AT_LALR1_CC_IF, AT_PURE_LEX_IF, AT_LOC, AT_VAL, AT_LEX_FORMALS) + (AT_LEX_ARGS, AT_USE_LEX_ARGS, AT_LEX_PRE_FORMALS, AT_LEX_PRE_ARGS) + New macros. + (AT_CHECK_POPDEFS): Undefine them. + (AT_CHECK_CALC_LALR1_CC): New. + Use it for the first lalr1.cc test. + +2003-02-04 Akim Demaille + + * data/lalr1.cc (YYLLOC_DEFAULT): Fix its definition: be based on + Location as is defined. + +2003-02-04 Akim Demaille + + * data/lalr1.cc: If YYDEBUG is not defined, don't depend upon + name_ being defined. + +2003-02-03 Paul Eggert + + * src/gram.h (start_symbol): Remove unused decl. + + Use more-consistent naming conventions for local vars. + + * src/derives.c (derives_compute): Change type of local var from + int to rule_number. + * src/gram.c (grammar_rules_partial_print): Likewise. + * src/print.c (print_core): Likewise. + * src/reduce.c (reduce_grammar_tables): Likewise. + + * src/gram.c (grammar_dump): Change name of item_number * + local var from r to rp. + * src/nullable.c (nullable_compute): Likewise. + + * src/gram.h (ISTOKEN, ISVAR): Use i, not s, for int var. + + * src/gram.h (symbol_number_as_item_number): Use sym, not s, + for symbol or symbol_number var. + * src/reader.c (grammar_start_symbol_set): Likewise. + * src/reader.h (grammar_start_symbol_set, grammar_symbol_append): + Likewise. + * src/state.c (transitions_to): Likewise. + * src/state.h: Likewise. + * src/tables.c (symbol_number_to_vector_number): Likewise. + + * src/muscle_tab.h (MUSCLE_OBSTACK_SGROW): Use p, not s, for + char * var. + + * src/parse-gram.y (lloc_default): Use loc, not r, for YYLTYPE + var. + + * src/scan-gram.l (no_cr_read): Use bytes_read, not s, for size + var. + + * src/system.h (xstrndup, strchr, strspn, strnlen, memchr, memrchr): + Use str, not s, for char * var. Use ch, not c, for character var. + Use size for size var. + + * src/uniqstr.c (uniqstr_new, uniqstr_assert): Use str, not s, for + char * var. + (uniqstr_print, uniqst_print_processor): Use ustr, not s, for + uniqstr var. + * src/uniqstr.h: Likewise. + + * src/vcg.c (get_color_str, get_textmode_str, get_shape_str, + get_layoutalgorithm_str, get_decision_str, get_orientation_str, + get_node_alignment_str, get_arrow_mode_str, get_crossing_type_str, + get_view_str, get_linestyle_str, get_arrowstyle_str): Rename + param to have same name as that of enum, so that we don't use + "s" to stand for a non-state. + +2003-02-02 Akim Demaille + + * src/scan-skel.l: Scan more than one inert character per yylex + invocation. + +2003-02-01 Paul Eggert + + Version 1.875a. + + * po/LINGUAS: Add ms. + +2003-01-30 Akim Demaille + + * doc/Makefile.am (CLEANFILES): Add bison.fns for distcheck. + +2003-01-29 Paul Hilfinger + + * tests/cxx-type.at: Correct apparent typo in Bison input: $$ instead + of $1. + + Changes in response to error report by S. Eken: GLR mode does not + handle negative $ indices or $ indices in embedded rules correctly. + See . + + * data/glr.c (b4_rhs_value): Change to use YYFILL macro. + (b4_rhs_location): Ditto. + (yyfill): New function to copy from stack tree into array + incrementally. + (yyuserAction): Modify to allow incremental move of semantic values + to rhs array when in GLR mode. + Define YYFILL to use in user-defined actions to fill semantic array + as needed. + Remove dummy use of yystack, as there is now a guaranteed use. + (yydoAction): Modify to allow incremental move of semantic values + to rhs array when in GLR mode. + (yyresolveAction): Ditto. + (yyglrShiftDefer): Update comment. + (yyresolveStates): Use X == NULL for pointers, not !X. + (yyglrReduce): Ditto. + (yydoAction): Ditto + + * tests/glr-regr1.at: Rename to ... + * tests/glr-regression.at: Add new regression test for the problems + described above (adapted from S. Eken). + Update copyright notice. + * tests/testsuite.at: Rename glr-regr1.at to glr-regression.at. + * tests/Makefile.am: Ditto. + +2003-01-28 Paul Eggert + + * data/lalr1.cc: Do not use @output_header_name@ unless + b4_defines_flag is set. This fixes two bugs reported by + Tim Van Holder in + + and . + +2003-01-21 Paul Eggert + + * data/yacc.c (YYERROR): Move code from yyerrlab1 to here, so that + we don't need to worry about yyerrlab1 being reported as an + "unused label" by non-GCC C compilers. The downside is that if + locations are used then a couple of statements are duplicated each + time YYERROR is invoked, but the upside is that the warnings + should vanish. + (yyerrlab1): Move code to YERROR. + (yyerrlab2): Remove. Change uses back to yyerrlab1. + This reverts some of the 2002-12-27 change. + +2003-01-17 Paul Eggert + + * src/output.c (symbol_printers_output): Fix typo that led + to core dump. Problem reported by Antonio Rus in + . + +2003-01-13 Akim Demaille , + Quoc Peyrot , + Robert Anisko + + * data/lalr1.cc (parse::yyerrlab1): When popping the stack, stop + when the stacks contain one element, as the loop would otherwise + free the last state, and then use the top state (the one we just + popped). This means that the initial elements will not be freed + explicitly, as is the case in yacc.c; it is not a problem, as + these elements have fake values. + +2003-01-11 Paul Eggert + + * NEWS: %expect-violations are now just warnings, reverting + to Bison 1.30 and 1.75 behavior. This fixes the GCC 3.2 + bootstrapping problem reported by Matthias Klose; see + . + * src/conflicts.c (conflicts_print): Likewise. + * tests/conflicts.at (%expect not enough, %expect too much, + %expect with reduce conflicts): Likewise. + * doc/bison.texinfo (Expect Decl): Document this. Also mention + that the warning is enabled if the number of conflicts changes + (not necessarily increases). + + * src/getargs.c (version): Update copyright year. + +2003-01-09 Akim Demaille + + * src/Makefile.am, lib/Makefile.am: Use $(VAR) instead of @VAR@. + +2003-01-08 Paul Eggert + + * Makefile.maint (WGETFLAGS): + New macro, containing "-C off" to disable proxy caches. + All uses of $(WGET) changed to $(WGET) $(WGETFLAGS). + (rel-check): Use $(WGET) instead of wget. + +2003-01-06 Paul Eggert + + * doc/bison.texinfo (Generalized LR Parsing): Add a reference to + the GLR paper of Scott, Johnstone and Hussain. + +2003-01-04 Paul Eggert + + * configure.ac (AC_ARG_ENABLE): Add --disable-yacc. + (YACC_SCRIPT, YACC_LIBRARY): New vars to AC_SUBST. + * lib/Makefile.am (lib_LIBRARIES): liby.a -> @YACC_LIBRARY@. + (EXTRA_LIBRARIES): New var, for liby.a. + * src/Makefile.am (bin_SCRIPTS): yacc -> @YACC_SCRIPT@. + (EXTRA_SCRIPTS): New var, for yacc. + + * data/yacc.c (yyerrlab1): Omit attribute if __cplusplus is defined, + since GNU C++ (as of 3.2.1) does not allow attributes on labels. + Problem reported by Nelson H. F. Beebe. + +2003-01-03 Paul Eggert + + * lib/obstack.h (__INT_TO_PTR) [__STDC__]: Cast result to + (void *) to avoid diagnostic with native c89 on SGI IRIX 6.5 + when compiling Bison 1.875's `bitset bset = obstack_alloc + (bobstack, bytes);'. Problem reported by Nelson H. F. Beebe. + + * src/scan-skel.l (QPUTS): Omit redundant `;' from macro definition. + ([^@\n]): Renamed from [^@\n]+ so that the token buffer does not + grow to a huge size with typical invocation. + + * lib/hash.c (_Bool, bool, false, true, __bool_true_false_are_defined): + Use the pattern recommended by Autoconf 2.57, except also protect + against double-definition. + * src/system.h: Likewise. + Portability issues reported by Nelson H. F. Beebe. + + * data/glr.c (yybool): Renamed from bool, to avoid collisions in C. + All uses changed. Provide a definition in both C and C++. + (yytrue, yyfalse): Define even if defined (__cplusplus). + + * lib/bitset_stats.c (bitset_stats_list): Remove unused var. + Reported by Nelson H. F. Beebe. + + * src/scan-skel.l ("@oline@"): Output lineno+1, not lineno. + +2003-01-02 Paul Eggert + + * data/yacc.c (yyerrlab1): Append `;' after attribute, to + pacify the buggy "smart preprocessor" in MacOS 10.2.3. + Bug reported by Nelson H. F. Beebe. + +2003-01-01 Paul Eggert + + * Version 1.875. + +2002-12-30 Paul Eggert + + * src/scan-gram.l (","): + Moved here from... + (","): Here. This causes stray "," to be treated + more uniformly. + + * src/scan-gram.l ("}"): Output ";" before the + last brace in braced code when not in Yacc mode, for compatibility + with Bison 1.35. This resurrects the 2001-12-15 patch to + src/reader.c. + + * src/reader.h (YYDECL): Use YYSTYPE, not its deprecated alias + yystype. This follows up the 2002-12-24 YYSTYPE bug fix. + +2002-12-28 Paul Eggert + + * src/symtab.c (symbol_make_alias): Set type of SYMVAL to be + that of SYM's type. This fixes Debian bug 168069, reported by + Thomas Olsson. + +2002-12-28 Paul Eggert + + Version 1.75f. + + Switch back to the Yacc style of conflict reports, undoing some + of the 2002-07-30 change. + * doc/bison.texinfo (Understanding): Use Yacc style for + conflict reports. Also, use new way of locating rules. + * src/conflicts.c (conflict_report): + Renamed from conflict_report_yacc, removing the old + 'conflict_report'. Translate the entire conflict report at once, + so that we don't assume that "," has the same interpretation in + all languages. + (conflicts_output): Use Yacc-style conflict report for each state, + instead of our more-complicated style. + (conflicts_print): Use Yacc-style conflict report, except print + the input file name when not emulating Yacc. + * tests/conflicts.at (Unresolved SR Conflicts, Defaulted + Conflicted Reduction, %expect not enough, %expect too much, + %expect with reduce conflicts): Switch to Yacc-style conflict reports. + * tests/existing.at (GNU Cim Grammar): Likewise. + * tests/glr-regr1.at (Badly Collapsed GLR States): Likewise. + + * src/complain.c (warn_at, warn, complain_at, complain, fatal_at, + fatal): Don't invoke fflush; it's not needed and it might even be + harmful for stdout, as stdout might not be open. + * src/reduce.c (reduce_print): Likewise. + +2002-12-27 Paul Eggert + + Fix a bug where error locations were not being recorded correctly. + This problem was originally reported by Paul Hilfinger in + . + + * data/yacc.c (yyparse): New local var yylerrsp, to record the + top of the location stack's error locations. + (yyerrlab): Set it. When discarding a token, push its location + onto yylerrsp so that we don't lose track of the error's end. + (yyerrlab1): Now is only the target of YYERROR, so that we can + properly record the location of the action that failed. For GCC + 2.93 and later, insert an __attribute__ ((__unused__)) to avoid + GCC warning about yyerrlab1 being unused if YYERROR is unused. + (yyerrlab2): New label, which yyerrlab now falls through to. + Compute the error's location by applying YYLLOC_DEFAULT to + the locations of all the symbols that went into the error. + * doc/bison.texinfo (Location Default Action): Mention that + YYLLOC_DEFAULT is also invoked for syntax errors. + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): + Error locations include the locations of all the tokens that were + discarded, not just the last token. + +2002-12-26 Paul Eggert + + * src/files.c: Include quote.h. + (compute_output_file_names): Warn if we detect conflicting + outputs to the same file. This should catch the misunderstanding + exemplified by Debian Bug 165349, reported by Bruce Stephens.. + + * src/conflicts.c (conflicts_print): If the user specifies + "%expect N", report an error if there are any reduce/reduce + conflicts. This is what the manual says should happen. + This fixes Debian bug 130890, reported by Anthony DeRobertis. + * tests/conflicts.at (%expect with reduce conflicts): New test. + + Don't use m4_include on relative file names, as it doesn't work as + desired if there happens to be a file with that name under ".". + + * m4sugar/version.m4: Remove; it was included but it wasn't used. + * data/Makefile.am (dist_m4sugar_DATA): Remove m4sugar/version.m4. + * data/m4sugar/m4sugar.m4: Don't include m4sugar/version.m4. + * data/glr.c, data/lalr1.cc, data/yacc.c: Don't include c.m4. + * src/output.c (output_skeleton): Use full path names when + specifying a file to include; don't rely on include path, as + it's unreliable when the working file contains a file with + that name. + +2002-12-25 Paul Eggert + + Remove obsolete references to bison.simple and bison.hairy. + Problem mentioned by Aubin Mahe in + . + * data/glr.c: Comment fix. + * doc/bison.1: Remove references. Also, mention "yacc". + + * src/getargs.c (getargs) [MSDOS]: Don't assume optarg != NULL + with -g option. + + * src/parse-gram.y (declaration): Use enum "report_states" rather + than its numeric value 1. + + * src/scan-skel.l ("@output ".*\n): Close any old yyout before + opening a new one. This fixes Debian bug 165349, reported by + Bruce Stephens. + +2002-12-24 Paul Eggert + + Version 1.75e. + + * Makefile.maint (cvs-update): Don't assume that the shell + supports $(...), as Solaris sh doesn't. + + * src/parse-gram.y (lloc_default): Remove test for empty + nonterminals at the end, since it didn't change the result. + +2002-12-24 Paul Eggert + + If the user does not define YYSTYPE as a macro, Bison now declares it + using typedef instead of defining it as a macro. POSIX requires this. + For consistency, YYLTYPE is also declared instead of defined. + + %union directives can now have a tag before the `{', e.g., the + directive `%union foo {...}' now generates the C code + `typedef union foo { ... } YYSTYPE;'; this is for Yacc compatibility. + The default union tag is `YYSTYPE', for compatibility with Solaris 9 + Yacc. For consistency, YYLTYPE's struct tag is now `YYLTYPE' + instead of `yyltype'. + + `yystype' and `yyltype' are now obsolescent macros instead of being + typedefs or tags; they are no longer documented and will be + withdrawn in a future release. + + * data/glr.c (b4_location_type): Remove. + (YYSTYPE): Renamed from yystype. + (YYSTYPE_IS_DECLARED): New macro, used to prevent double-typedef. + (struct YYLTYPE): Renamed from struct yyltype. + (YYLTYPE): Renamed from yyltype. + (yyltype, yystype): New (and obsolescent) macros, + for backward compatibility. + * data/yacc.c: Likewise. + + * data/yacc.c (YYSTYPE): Declare as union YYSTYPE if the user + does not specify a union tag. This is for compatibility with + Solaris 9 yacc. + + * src/parse-gram.y (add_param): 2nd arg is now char * not char + const *, since it is now modified by stripping surrounding { }. + (current_braced_code): Remove. + (PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_UNION, + PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Change names to include + trailing " {...}". Now of type . + (grammar_declaration): Adjust to bundled tokens. + (code_content): Remove; stripping is now done by add_param. + (print_token_value): Print contents of bundled tokens. + (token_name): New function. + + * src/reader.h (braced_code, current_braced_code): Remove. + (token_name): New decl. + + * src/scan-gram.l (handle_dollar, handle_at): Now takes int + token_type, not braced_code code_kind. All uses changed. + (SC_PRE_CODE): New state, for scanning after a keyword that + has (or usually has) an immediately-following braced code. + (token_type): New local var, to keep track of which token type + to return when scanning braced code. + ("%destructor", "%lex-param", + "%parse-param", "%printer", + "%union"): Set token type and BEGIN SC_PRE_CODE + instead of returning a token type immediately. + ("{"): Set token type. + ("}"): Use it. + (handle_action_dollar, handle_action_at): Now returns bool + indicating success. Fail if ! current_rule; this prevents a core dump. + (handle_symbol_code_dollar, handle_symbol_code_at): + Remove; merge body into caller. + (handle_dollar, handle_at): Complain in invalid contexts. + + * NEWS, doc/bison.texinfo: Document the above. + * NEWS: Fix years and program names in copyright notice. + +2002-12-17 Paul Eggert + + * NEWS, doc/bison.texinfo (Parser Function, Pure Calling, Error + Reporting, Table of Symbols): Omit mentions of %lex-param and + %parse-param from the documentation for now. + +2002-12-15 Paul Eggert + + Undo most of the 2002-11-12 yychar -> yytoken patch, as it broke + GCC 3.2.1 (which depends on yychar == YYEMPTY when there is no + lookahead symbol, and which sets yychar in parser actions) and it + disagreed with the Bison documentation. Bug + reported by Andrew Walrond. + + * data/yacc.c (YYTRANSLATE): Don't check for negative argument, + as the caller now does that. + (yyclearin, YYBACKUP, yyparse): Use yychar, not yytoken. + (YYEMPTY): Parenthesize right hand side, since others use it. + (yyparse): Don't assume that our generated code is the only code + that sets yychar. + +2002-12-13 Paul Eggert + + Version 1.75d. + + POSIX requires a "yacc" command. + * src/Makefile.am (bin_SCRIPTS): New macro, for yacc. + (MOSTLYCLEANFILES): Add yacc. + (yacc): New rule. + * doc/bison.texinfo (Invocation, Bison Options): Mention yacc + as an alias for bison y. + + * po/LINGUAS: Add da. + + * src/getargs.c (__GNU_LIBRARY__) [lint]: Define to work around + problem with latest . + (HACK_FOR___GNU_LIBRARY___PROTOTYPE): New macro. + + * doc/fdl.texi: Upgrade to 1.2. + * lib/alloca.c, lib/error.c, lib/getopt.c, lib/getopt.h + lib/getopt1.c, lib/gettext.h, lib/memrchr.c, lib/obstack.c, + lib/obstack.h, lib/strnlen.c, lib/unlocked-io.h: Sync with + gnulib. + * config/install-sh: Sync with autotools. + + Fix a bad interaction with flex 2.5.23 reported by Bruce Lilly in + . + * data/yacc.c (YYLTYPE, struct yyltype): Do not define unless + locations are requested. + (union yyalloc): Do not depend on YYLTYPE_IS_TRIVIAL unless + locations are requested. + +2002-12-12 Paul Eggert + + Remove unportable casts and storage allocation tricks. + While we're at it, remove almost all casts, since they + usually aren't needed and are a sign of trouble. + + * configure.ac (AC_CHECK_TYPES): Check for uintptr_t. + + * src/derives.c (derives_compute): Do not subtract NTOKENS from + the pointer DSET returned by malloc; this isn't portable. + Instead, always use DSET[i - NTOKENS] rather than DSET[i]. + Similarly for DERIVES. + * src/lalr.c (set_goto_map): Likewise, for GOTO_MAP and TEMP_MAP. + * src/nullable.c (nullable_compute): Likewise, for RSETS and NULLABLE. + * src/reduce.c (reduce_grammar_tables): Likewise, for nontermmap + + * src/derives.c (derives_compute): Do not bother invoking + int_of_rule_number, since rule numbers are integers. + + * src/files.c (concat2, tr, compute_base_name): Use xmalloc (N) + rather than XMALLOC (char, N). + + * src/files.c (filename_split): Rewrite to avoid cast. + + * src/gram.h (symbol_number_as_item_number, + item_number_as_symbol_number, rule_number_as_item_number, + item_number_as_rule_number): + Now inline functions rather than macros, to avoid casts. + * src/state.h (state_number_as_int): Likewise. + * src/tables.c (state_number_to_vector_number, + symbol_number_to_vector_number): Likewise. + + * src/gram.h (int_of_rule_number): Remove; no longer used. + + * src/lalr.c (add_lookback_edge): Use malloc rather than calloc, + since the resulting storage is always stored into. + + * src/main.c (alloca) [C_ALLOCA]: Add decl here, the only place + where it's needed. + + * src/muscle_tab.c (muscle_m4_output): + Now inline. Return bool, not int. + * src/state.c (state_compare): Likewise. + * src/symtab.c (symbol_check_defined, + symbol_check_alias_consistency, symbol_pack, symbol_translation, + hash_compare_symbol, hash_symbol): + Likewise. + * src/uniqstr.c (uniqstr_print): Likewise. + * src/muscle_tab.c (muscle_m4_output_processor): + New function, to avoid casts. + * src/state.c (state_comparator, stage_hasher): Likewise. + * src/symtab.c (symbol_check_defined_processor, + symbol_check_alias_consistency_processor, symbol_pack_processor, + symbol_translation_processor, hash_symbol_comparator, + hash_symbol_hasher): Likewise. + * src/uniqstr.c (uniqstr_print_processor): Likewise. + * src/muscle_tab.c (muscles_m4_output): + Use new functions instead of casting old functions unportably. + * src/state.c (state_hash_new): Likewise. + * src/symtab.c (symbols_new, symbols_do, symbols_check_defined, + symbols_token_translations_init): + Likewise. + * src/uniqstr.c (uniqstrs_new, hash_initialize, uniqstrs_do): Likewise. + + * src/output.c (GENERATE_MUSCLE_INSERT_TABLE): Use long local + var instead of casting to long, to avoid casts. + (prepare_states): Use MALLOC rather than alloca, so that we don't + have to worry about alloca. + * src/state.c (state_hash_lookup): Likewise. + + * src/scan-gram.l ("'"): Use unsigned char + local var instead of casting to unsigned char, to avoid casts. + + * src/state.c (TRANSITIONS_ALLOC, ERRS_ALLOC, REDUCTIONS_ALLOC, + STATE_ALLOC): Remove. + (transitions_new, errs_new, reductions_new, state_new): Use malloc + rather than calloc, and use offsetof to avoid allocating slightly + too much storage. + (state_new): Initialize all members. + + * src/state.c (state_hash): Use unsigned accumulator, not signed. + + * src/symtab.c (symbol_free): Remove; unused. + (symbol_get): Remove cast in lhs of assignment. + (symbols_do): Now static. Accept generic arguments, not + hashing-related ones. + + * src/symtab.h: (NUMBER_UNDEFINED): Remove unnecessary cast. + (symbol_processor): Remove. + (symbols_do): Remove decl; now static. + + * src/system.h (alloca): Remove; decl no longer needed. + (): Include, for offsetof. + (, ): Include if available. + (uintptr_t): New type, if system lacks it. + (CALLOC, MALLOC, REALLOC): New macros. + All uses of XCALLOC, XMALLOC, and XREALLOC changed to use these + new macros. + + * src/tables.c (table_size): Now int, to pacify GCC. + (table_grow, table_ninf_remap): Use signed table size. + (save_row): Don't bother initializing locals when not needed. + (default_goto, goto_actions, pack_vector): Remove unnecessary casts. + * src/uniqstr.c (hash_compare_uniqstr): Likewise. + + * src/vcg.h: Correct misspellings. + + * src/vcg_defaults.h (G_CMAX): Now INT_MAX. + + + * src/getargs.c (getargs): Don't assume EOF == -1. + +2002-12-09 Paul Eggert + + Change identifier spellings to avoid collisions with names + that are reserved by POSIX. + + Don't use names ending in _t, since POSIX reserves them. + For consistency, remove _e and _s endings -- they're weren't + needed to remove ambiguity. All uses changed. + * src/uniqstr.h (uniqstr): Renamed from uniqstr_t, which in + turn was just renamed from struniq_t. + * src/uniqstr.c (uniqstr_processor): Renamed from struniq_processor, + which in turn was just renamed from struniq_processor_t. + (hash_compare_uniqstr): Renamed from hash_compare_struniq, which + in turn was renamed from hash_compare_struniq_t. + * src/LR0.c (struct state_list): Renamed from struct state_list_s. + (state_list): Renamed from state_list_t. + * src/assoc.h (assoc): Renamed from assoc_t. + * src/conflicts.c (enum conflict_resolution): Renamed from + enum conflict_resolution_e. + * src/derives.c (struct rule_list): Renamed from struct rule_list_s. + (rule_list): Renamed from rule_list_t. + * src/getargs.h (enum trace): Renamed from enum trace_e. + (enum report): Renamed from enum report_e. + * src/gram.h (item_number): Renamed from item_number_t. + (rule_number): Renamed from rule_number_t. + (struct rule_s): Remove the "rule_s" part; not used. + (rule): Renamed from rule_t. + (rule_filter): Renamed from rule_filter_t. + * src/lalr.c (struct goto_list): Renamed from struct goto_list_s. + (goto_list): Renamed from goto_list_t. + * src/lalr.h (goto_number): Renamed from goto_number_t. + * src/location.h (location): Renamed from location_t. + * src/muscle_tab.c (muscle_entry): Renamed from muscle_entry_t, + and moved here from: + * src/muscle_tab.h (muscle_entry_t): here. + * src/nullable.c (struct rule_list): Renamed from struct rule_list_s. + (rule_list): Renamed from rule_list_t. + * src/print_graph.c (static_graph): Renamed from graph. + * src/reader.h (braced_code): Renamed from braced_code_t. + Remove brace_code_e tag. + * src/relation.h (relation_node): Renamed from relation_node_t. + (relation_nodes): Renamed from relation_nodes_t. + (relation): Renamed from relation_t. + * src/state.h (state_number): Renamed from state_number_t. + (struct state): Renamed from struct state_s. + (state): Renamed from state_t. + (transitions): Renamed from transitions_t. Unused (and + misspelled) transtion_s tag removed. + (errs): Renamed from errs_t. Unused errs_s tag removed. + (reductions): Renamed from reductions_t. Unused tag + reductions_s removed. + * src/symlist.h (symbol_list): Renamed from symbol_list_t. + (struct symbol_list): Renamed from struct symbol_list_s. + * src/symtab.h (symbol_number): Renamed from symbol_number_t. + (struct symbol): Renamed from struct symbol_s. + (symbol): Renamed from symbol_t. + * src/tables.c (vector_number): Renamed from vector_number_t. + (action_number): Renamed from action_t. + * src/tables.h (base_number): Renamed from base_t. + * src/vcg.h (enum color): Renamed from enum color_e. + (enum textmode): Renamed from enum textmode_e. + (enum shape): Renamed from enum shape_e. + (struct colorentry): Renamed from struct colorentry_s. + (struct classname): Renamed from struct classname_s. + (struct infoname): Renamed from struct infoname_s. + (enum layoutalgorithm): Renamed from enum layoutalgorithm_e. + (enum decision): Renamed from enum decision_e. + (enum orientation): Renamed from enum orientation_e. + (enum alignment): Renamed from enum alignment_e. + (enum arrow_mode): Renamed from enum arrow_mode_e. + (enum crossing_type): Renamed from enum crossing_type_e. + (enum view): Renamed from enum view_e. + (struct node): Renamed from struct node_s. + (node): Renamed from node_t. + (enum linestyle): Renamed from enum linestyle_e. + (enum arrowstyle): Renamed from enum arrowstyle_e. + (struct edge): Renamed from struct edge. + (edge): Renamed from edge_t. + (struct graph): Renamed from struct graph_s. + (graph): Renamed from graph_t. + * tests/calc.at (_AT_DATA_CALC_Y, Simple LALR Calculator): + Rename value_t -> value. + * tests/input.at (Torturing the Scanner): Rename value_t -> value, + value_t_as_yystype -> value_as_yystype. + + Don't include in the mainstream code, since it + reserves E[A-Z0-9]* and we want to use symbols like 'EQUALS'. + * lib/get-errno.c, lib/get-errno.h: New files. + * lib/Makefile.am (libbison_a_SOURCES): Add get-errno.h, + get-errno.c. + * src/files.c (xfopen, xfclose): Use get_errno instead of errno. + * src/output.c (output_skeleton): Likewise. + * src/scan-gram.l ({int}): Use set_errno and get_errno + instead of errno. + (\\x[0-9abcdefABCDEF]+): + Likewise. + (handle_action_dollar, handle_action_at): Likewise. + * src/system.h: Do not include . + (TAB_EXT): Renamed from EXT_TAB. + (OUTPUT_EXT): Renamed from EXT_OUTPUT. + + Avoid str[a-z]*, since reserves that name space. + Change all instances of "struniq" in names to "uniqstr", and + likewise for "STRUNIQ" and "UNIQSTR". + * src/uniqstr.c: Renamed from src/struniq.c. + * src/uniqstr.h: Renamed from src/struniq.h. + * src/Makefile.am (bison_SOURCES): Adjust to these renamings. + * src/files.c (strsuffix): Remove; unused. + (concat2): Renamed from stringappend. Now static. + * src/files.h (strsuffix, stringappend): Remove; unused. + * src/parse-gram.y (): Renamed from . + (): Renamed from . + * src/scan-gram.l (obstack_for_string): Renamed from string_obstack. + * src/vcg.h (struct node_s.expand): Renamed from struct node_s.stretch. + (struct graph_s.expand): Renamed from struct graph_s.stretch. + * src/vcg_defaults.h (G_EXPAND): Renamed from G_STRETCH. + (G_LONG_STRAIGHT_PHASE): Renamed from G_STRAIGHT_PHASE. + (N_EXPAND): Renamed from N_STRETCH. + + Avoid *_MAX and *_MIN, since reserves that name space. + * data/yacc.c (YYSTACK_GAP_MAXIMUM): Renamed from YYSTACK_GAP_MAX. + * src/gram.h (ITEM_NUMBER_MAX, ITEM_NUMBER_MIN, RULE_NUMBER_MAX): + Remove; unused. + * src/lalr.h (GOTO_NUMBER_MAXIMUM): Renamed from GOTO_NUMBER_MAX. + * src/state.h (STATE_NUMBER_MAXIMUM): Renamed from STATE_NUMBER_MAX. + * src/symtab.h (SYMBOL_NUMBER_MAXIMUM): Renamed from SYMBOL_NUMBER_MAX. + * src/tables.c (VECTOR_NUMBER_MAX, VECTOR_NUMBER_MIN): Remove; unused. + (BASE_MAXIMUM): Renamed from BASE_MAX. + (BASE_MINIMUM): Renamed from BASE_MIN. + (ACTION_MAX): Remove; unused. + (ACTION_NUMBER_MINIMUM): Renamed from ACTION_MIN. + Unnecessary casts removed from above defines. + + + Fix misspelling in names. + * src/vcg.h (enum_alignment_e): Renamed from enum_alignement_e. + * src/vcg_defaults.h (G_NODE_ALIGNMENT): Renamed from + G_NODE_ALIGNEMENT. + + + * lib/timevar.c (timevar_report): Renamed from time_report, + for consistency with other names. + * lib/timevar.h (timevar_report): New decl. + * src/system.h (time_report): Remove; decl is now in lib/timevar.h. + + + Sort include-file uses. + + Reorder all include files under src to be in the order "system.h". + then the ../lib include files in angle brackets (alphabetized), + then the . include files in double-quotes (alphabetized). Fix + dependency breakages encountered in this process, as follows: + * src/closure.h, src/derives.h, src/state.h: Include "gram.h". + * src/complain.c: Don't include stdlib.h, string.h _LIBC stuff. + * src/state.h: Include "symtab.h". + +2002-12-08 Paul Eggert + + * data/glr.c, data/lalr1.cc, data/yacc.c: Do not use __file__, + since this causes problems when __file__ contains character + sequences like "@" that are treated specially by src/scan-skel.l. + Instead, just use the file's basename. This fixes the bug + reported by Martin Mokrejs in + . + +2002-12-06 Paul Eggert + + Add support for rules that do not have trailing semicolons, as + POSIX requires. Improve the quality of locations in Bison + diagnostics. + + * src/location.c: Include . + (empty_location): Now const. + (location_print): New function. Follow the recommendation of the + GNU Coding Standards for locations that span file boundaries. + * src/location.h: Do not include ; no longer needed. + (boundary): New type. + (location_t): Use it. This allows locations to span file boundaries. + All member uses changed: file -> start.file or end.file (as needed), + first_line -> start.line, first_column -> start.column, + last_line -> end.line, last_column -> end.column. + (equal_boundaries): New function. + (LOCATION_RESET, LOCATION_STEP): Remove. + (LOCATION_PRINT): Remove. All callers changed to use location_print. + (empty_location): Now const. + (location_print): New decl. + * src/parse-gram.y (lloc_default): New function, which handles + empty locations more accurately. + (YYLLOC_DEFAULT): Use it. + (%token COLON): Remove. + (%token ID_COLON): New token. + (rules): Use it. + (declarations, rules): Remove trailing semicolon. + (declaration, rules_or_grammar_declaration): + Allow empty (";") declaration. + (symbol_def): Remove empty actions; no longer needed. + (rules_or_grammar_declaration): Remove trailing semicolon. + (semi_colon.opt): Remove. + * src/reader.h: Include location.h. + (scanner_cursor): New decl. + * src/reduce.c (nonterminals_reduce): Use warn_at rather than + rolling our own. + * src/scan-gram.l (YY_USER_INIT): Initialize scanner_cursor instead + of *loc. + (STEP): Remove. No longer needed, now that adjust_location does + the work. All uses removed. + (scanner_cursor): New var. + (adjust_location): Renamed from extend_location. It now sets + *loc and adjusts the scanner cursor. All uses changed. + Don't bother testing for CR. + (handle_syncline): Remove location arg; now updates scanner cursor. + All callers changed. + (unexpected_end_of_file): Now accepts start boundary of token or + comment, not location. All callers changed. Update scanner cursor, + not the location. + (SC_AFTER_IDENTIFIER): New state. + (context_state): Renamed from c_context. All uses changed. + (id_loc, code_start, token_start): New local vars. + (): New initial context. Move all + processing of Yacc white space and equivalents here. + ({id}): Save id_loc. Begin state SC_AFTER_IDENTIFIER + instead of returning ID immediately, since we need to search for + a subsequent colon. + ("'", "\""): Save token_start. + ("%{", "{", "%%"): Save code_start. + (): New state, looking for a colon. + (, , ): + BEGIN context_state at end, not INITIAL. + ("\"", "'", + "}", "%}", <>): + Return correct token start. + (): Save start boundary when + the start of a character, string or multiline comment is found. + * tests/conflicts.at (S/R in initial, Defaulted Conflicted + Reduction): Adjust reported locations to match the more-precise + results now expected. + * tests/input.at (Invalid $n, Invalid @n, Type Clashes): Likewise. + * tests/reduce.at (Useless Rules, Reduced Automaton, + Underivable Rules): Likewise. + * tests/regression.at (Invalid inputs): No longer `expecting ";" + or "|"' now that so many other tokens are allowed by the new grammar. + + * src/complain.h (current_file): Remove duplicate decl; + current_file is now owned by files.h. + * src/complain.c, src/scan-gram.l: Include files.h. + +2002-12-06 Paul Eggert + + * data/glr.c (yy_reduce_print): Don't assume that yyrline[yyrule] + promotes to int; it might be unsigned int. + * data/yacc.c (yy_reduce_print): Likewise. + + * doc/bison.texinfo (Table of Symbols): YYERROR_VERBOSE should + be #defined in the prologue, not in the Bison declarations. + This fixes Debian Bug 102878, reported by Shaul Karl. + +2002-12-02 Paul Eggert + + * configure.ac (AC_REPLACE_FUNCS): Add strtoul. + * lib/strtoul.c: New file, from gnulib. + This fixes a porting bug reported by Peter Klein in + . + +2002-11-30 Paul Eggert + + * src/scan-gram.l (no_cr_read, extend_location): Move to epilogue, + and put only a forward declaration in the prologue. This is for + consistency with the other scanner helper functions. + + Type clashes now generate warnings, not errors, since it + appears that POSIX may allow some grammars with type clashes. + * src/reader.c (grammar_current_rule_check): Warn about + type clashes instead of complaining. + * tests/input.at (Type Clashes): Expect warnings, not complaints. + + Add Yacc library, since POSIX requires it. + * doc/bison.texinfo (Yacc Library): New node. Regenerate top menu. + * lib/Makefile.am (lib_LIBRARIES, liby_a_SOURCES): New macros. + * lib/main.c, lib/yyerror.c: New files. + + gram_error can be static; it need not be extern. + * src/reader.h (gram_error): Remove decl. + * src/parse-gram.y (gram_error): Now static. Add static decl. + (print_token_value): Omit parameter names from forward decl, + for consistency. + +2002-11-29 Paul Eggert + + * doc/bison.texinfo: Emphasize that yylex and yyerror must + be declared before being used. E.g., one should typically + declare them in the prologue. Use GNU coding style in examples. + Put "const" consistently after the type it modifies. Mention + that C99 supports "inline". Mention that yyerror traditionally + returns "int". + + %parse-param and %lex-param now take just one argument, the + declaration; the argument name is deduced from the declaration. + + * doc/bison.texinfo (Parser Function, Pure Calling, Error + Reporting, Table of Symbols): Document this. + * src/parse-gram.y (add_param): New function. + (COMMA): Remove. + (declaration): Implement new rule for %parse-param and %lex-param. + * src/scan-gram.l: "," now elicits a warning, rather than being + a token; this is more compatible with byacc. + * tests/calc.at (Simple LALR Calculator): Adopt new convention. + +2002-11-27 Paul Eggert + + Rename identifiers to avoid real and potential collisions. + + * data/c.m4 (b4_yysymprint_generate): yyout -> yyoutput, + to avoid collision with lex macro described by Bruce Lilly in + . + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise. + * doc/bison.texinfo (Prologue, Tracing): yyprint -> print_token_value. + * src/parse-gram.y (print_token_value): Renamed from yyprint. + All uses changed. + (YYPARSE_PARAM, YYLEX_PARAM, yycontrol): Remove. All uses changed. + The name "yycontrol" violates the name space rules, and this stuff + wasn't being used anyway. + (input): Remove action; this stuff wasn't being used. + (gram_error): Rename local variable yylloc -> loc. + * src/reader.h (struct gram_control_s, gram_control_t): Remove. + (YY_DECL): Don't use "yy" at start of local variables. + All uses changed, e.g., yylloc -> loc. + * src/scan-gram.l (STEP): Renamed from YY_STEP. All uses changed. + (STRING_GROW): Renamed from YY_OBS_GROW. All uses changed. + (STRING_FINISH): Renamed from YY_OBS_FINISH. All uses changed. + (STRING_FREE): Renamed from YY_OBS_FREE. All uses changed. + + * src/parse-gram.y (gram_error): loc is now const *. + * src/reader.h (gram_error): Likewise. + +2002-11-24 Paul Eggert + + Version 1.75c. + + * tests/actions.at (Actions after errors): Use an output format + more similar to that of the Printers and Destructors test. + Test the position of the ';' token too. + (Printers and Destructors): Likewise. + (Printers and Destructors: %glr-parser): Remove for now, to avoid + unnecessarily alarming people when the test fails. + + * data/yacc.c (yyerrlab1): Move this label down, so that the + parser does not discard the lookahead token if the user code + invokes YYERROR. This change is required for POSIX conformance. + + * lib/error.c: Sync with gnulib. + +2002-11-22 Paul Eggert + + * lib/quotearg.c, lib/quotearg.h: Sync with gnulib. + * lib/mbswidth.c, lib/mbswidth.h: Likewise. + * lib/xmalloc.c: Likewise. + +2002-11-20 Paul Eggert + + * lib/argmatch.c, lib/argmatch.h: Sync with gnulib. + +2002-11-20 Paul Eggert + + Avoid use of , as the GNU Coding Standards hint that one + should use `if (! x) abort ();' rather than `assert (x);', and + anyway it's one less thing to worry about configuring. + + * data/glr.c, lib/hash.c, src/system.h: Do not include . + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise, + and replace all instances of assert with abort. + * tests/calc.at (_AT_DATA_CALC_Y): Likewise. + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Likewise. + + * data/glr.c (yydoAction, yyglrReduce, yysplitStack, yyresolveStates, + yyresolveAction, yyprocessOneStack): Use abort rather than assert. + * lib/hash.c (hash_lookup, hash_get_first, hash_get_next, + hash_find_entry, hash_rehash, hash_insert): Likewise. + * src/conflicts.c (resolve_sr_conflict): Likewise. + * src/lalr.c (set_goto_map, map_goto): Likewise. + * src/nullable.c (nullable_compute): Likewise. + * src/output.c (prepare_rules, token_definitions_output): Likewise. + * src/reader.c (packgram, reader): Likewise. + * src/state.c (state_new, state_free, state_transitions_set, + state_reduction_find): Likewise. + * src/symtab.c (symbol_user_token_number_set, symbol_make_alias, + symbol_pack): Likewise. + * src/tables.c (conflict_row, pack_vector): Likewise. + * src/vcg.c (get_color_str, get_textmode_str, get_shape_str, + get_layoutalgorithm_str, get_decision_str, get_orientation_str, + get_node_alignement_str, get_arrow_mode_str, get_crossing_type_str, + get_view_str, get_linestyle_str, get_arrowstyle_str): Likewise. + + * lib/argmatch.h (ARRAY_CARDINALITY): Do not bother to #undef. + (ARGMATCH_CONSTRAINT): New macro. + (ARGMATCH_ASSERT): Use it. + + * src/system.h (verify): New macro. + * src/getargs.c (trace_argmatch, report_argmatch): Use verify + rather than assert. + * src/tables.c (tables_generate): Likewise. + + * src/struniq.c (struniq_assert): Now returns void, and aborts + if the assertion is false. + (struniq_assert_p): Remove. + * src/struniq.h: Likewise. + +2002-11-18 Paul Eggert + + * data/glr.c (yygetLRActions): Replace `yyindex' with + `yytable[yyindex]' to fix typo introduced in my 2002-11-09 patch. + This fixes the regression with Sun ONE Studio 7 cc that I reported in + . + +2002-11-18 Akim Demaille + + * doc/bison.texinfo (Tracing): `yyprint' shouldn't prepend a + space. + From Tim Van Holder. + +2002-11-17 Paul Eggert + + Pacify Sun ONE Studio 7 lint. Also, rename "ParseError" + to "SyntaxError" for consistency with my 2002-11-15 change. + + * data/glr.c (YYDPRINTF, YYDSYMPRINT, YYDSYMPRINTF) [!YYDEBUG]: Do + not define to {}, since this breaks the common use of `YYDPRINTF + ((...));' if a single statement is desired (e.g. before `else'). + Work around GCC warnings by surrounding corresponding calls with + {} if needed. + (yyhasResolvedValue): Remove unused function. + (yymergeOptionSets, yyresolvStack): Use `continue;' for empty + loop body. + (yyreportSyntaxError): Renamed from yyreportParseError. + (yyrecoverSyntaxError): Renamed from yyrecoverParseError. + All uses changed. + * tests/calc.at (_AT_DATA_CALC_Y): Make vars static instead of + extern when possible. Remove unused initializations. + +2002-11-16 Akim Demaille + + Augment the similarity between GLR and LALR traces. + + * data/yacc.c (yy_stack_print, YY_STACK_PRINT, yy_reduce_print) + (YY_REDUCE_PRINT): New. + (yyparse): Use them. + * data/glr.c (yy_reduce_print): Use YYFPRINTF, no need for + YYDPRINT here. + (yyglrReduce, yyrecoverParseError, yyparse): Don't report the + state reached after the reduction/recovery, since... + (yyparse, yyprocessOneStack): Report the state we are entering in. + +2002-11-16 Akim Demaille + + * src/getargs.h, src/getargs.c (trace_e, trace_args, trace_types): + Add support for --trace=skeleton. + * src/scan-skel.l: %option debug. + Scan strings of non-@ or \n instead of character by character. + (scan_skel): Handle trace_skeleton. + (QPUTS): New. + (@output_parser_name@, @output_header_name@): ``Restore'' their + support (used to be M4 macros). + * data/yacc.c: Quote larger chunks, a la glr.c. + * data/lalr1.cc: Likewise. + The header guards are no longer available, so use some other + string than `YYLSP_NEEDED'. + +2002-11-16 Akim Demaille + + Make the ``Printers and Destructors'' test more verbose, taking + `yacc.c''s behavior as (possibly wrong) reference. + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Use printf + instead of fprint on stdout. + Set and report the last_line of the symbols. + Consistently display values and locations. + +2002-11-16 Paul Eggert + + * data/yacc.c: Avoid over-quoting of __line__ and __file__. + +2002-11-15 Paul Eggert + + * tests/actions.at (Actions after errors): New test case. + + * data/glr.c, data/lalr1.cc, data/yacc.cc, doc/bison.texinfo, + src/conflicts.c, src/parse-gram.y, src/tables.c, src/tables.h, + tests/action.at, tests/calc.at, tests/conflicts.at, + tests/cxx-type.at, tests/regression.at: + "parse error" -> "syntax error" for POSIX compatibility. + "parsing stack overflow..." -> "parser stack overflow" so + that code matches Bison documentation. + +2002-11-15 Akim Demaille + + * src/parse-gram.y (declaration): Have %parse-param and %lex-param + take two BRACED_CODE, not two string_content. + Free the scanner's obstack when we are done. + (code_content): New. + * tests/calc.at: Adjust. + * doc/bison.texinfo: Adjust. + Also, make sure to include the `,' for these declarations. + +2002-11-15 Tim Van Holder + + * m4/prereq.m4: Removed the commented jm_PREREQ_HASH + definition; avoids potential autoreconf problems. + +2002-11-15 Akim Demaille + + Always check the value returned by yyparse. + + * tests/calc.at (_AT_DATA_CALC_Y): Have `main' exit with the value + returned by yyparse. + (_AT_CHECK_CALC_ERROR): Take the expected exit value as argument. + Adjust calls. + * tests/glr-regr1.at (glr-regr1.y): Have `main' exit with the value + returned by yyparse. + +2002-11-14 Paul Hilfinger + + * data/glr.c (yyFail): Always set yyerrflag. Corrects regression + on input.at test. + +2002-11-14 Paul Eggert + + * src/output.c (output_skeleton): Call xfopen instead of + duplicating xfopen's body. + + Fix bugs reported by Nelson H. F. Beebe in + . + + * tests/headers.at (AT_TEST_CPP_GUARD_H): Don't assume that + "$CC -E foo.h" is allowed, as this doesn't work with the Portland + Group compiler. Instead, use "$CC -E bar.c". Include the .h + file twice in the grammar, as an extra check. + + * tests/input.at (Torturing the Scanner): Surround the + backslash-newline tests with "#if 0", to make it less likely that + we'll run into compiler bugs. Bring back solitary \ inside + comment, but add a closing comment to work around HP C bug. Don't + test backslash-newline in C character constant. + +2002-11-14 Akim Demaille + + * tests/synclines.at (AT_SYNCLINES_COMPILE): Ignore the exit + status of the compiler. + Calling `exit 1' is no longer needed. + Reported by Nelson H. F. Beebe. + +2002-11-14 Akim Demaille + + * tests/atlocal.in (CPPFLAGS): We have config.h. + * tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR): + New. + * tests/actions.at, tests/calc.at, tests/conflicts.at, + * tests/cxx-type.at, tests/glr-regr1.at, tests/headers.at, + * tests/regression.at, tests/torture.at: Use them for all the + grammars that are to be compiled. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Rename as... + * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): this. + * doc/bison.texinfo (GLR Parsers): Document `inline'. + +2002-11-14 Akim Demaille + + * doc/bison.texinfo: Various formatting changes (alignments in + samples, additional @group/@end group, GCS in samples. + Use @deffn instead of simple @table to define the directives, + macros, variables etc. + +2002-11-13 Paul Eggert + + Fix some bugs reported by Albert Chin-A-Young in + . + + * tests/input.at (Torturing the Scanner): Don't invoke "cc a.c b.c + -o c"; the HP C compiler chatters during compilation. + Instead, invoke "cc -c a.c -o a.o; cc -c b.c -o b.o; cc a.o b.o -o c". + * tests/headers.at (export YYLTYPE): Likewise. + + * tests/input.at (Torturing the Scanner): Remove lines containing + solitary backslashes, as they tickle a bug in the HP C compiler. + + * tests/glr-regr1.at (Badly Collapsed GLR States): Avoid // + comments, since they're not portable. Use GNU coding style. + +2002-11-13 Akim Demaille + + * data/yacc.c: Leave bigger chunks of quoted text. + (YYDSYMPRINTF): New. + Use it to report symbol activities. + * data/glr.c (YYDSYMPRINTF): New. + Use it. + +2002-11-12 Paul Eggert + + Version 1.75b. + + * data/glr.c (yydoAction): Return YYRESULTTAG, not int. + (yyglrReduce): Return yyok, not 0. + This should avoid the enumerated-type warnings reported + by Nelson H. F. Beebe in + . + + * lib/bbitset.h (BITSET_INLINE): Remove. + * lib/bitset.h [! BITSET_INLINE]: Remove. + (bitset_set, bitset_reset, bitset_test): Rename local vars + to avoid shadowing warnings by GCC. + + * data/glr.c (inline): Remove #define. It's the user's + responsibility to #define it away, just like 'const'. + This fixes one of the bugs reported by Nelson H. F. Beebe in + . + + * Makefile.maint (po-check): Scan .l and .y files instead of the + .c and the .h files that they generate. This fixes the bug + reported by Tim Van Holder in: + + Look for N_ as well as for _. Try to avoid matching #define for + N_ and _. + * po/POTFILES.in: Remove src/parse-gram.c, src/scan-gram.c, + src/system.h. Add src/parse-gram.y, src/scan-gram.l. + * src/scan-gram.l: Revamp regular expressions so that " and ' + do not confuse xgettext. + + * src/struniq.h (struniq_new): Do not declare the return type + to be 'const'; this violates the C standard. + * src/struniq.c (struniq_new): Likewise. + +2002-11-12 Albert Chin-A-Young + + * src/Makefile.am (LDADD): Link $(LIBINTL) last to avoid the + duplicate definition of optind on Tru64 UNIX 4.0D with the Compaq + linker. + +2002-11-12 Akim Demaille + + * Makefile.maint: Sync with Autoconf: + (local_updates): New. + +2002-11-12 Akim Demaille + + * po/POTFILES.in (src/lalr.c, src/state.c): Remove + +2002-11-12 Akim Demaille + + * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Display the + locations. + +2002-11-12 Akim Demaille + + * data/c.m4 (b4_yysymprint_generate): Pass *yyvaluep to YYPRINT, + not yyvalue. + +2002-11-12 Akim Demaille + + * tests/actions.at (AT_CHECK_PRINTER_AND_DESTRUCTOR): New. + Use it to test the GLR parser. + +2002-11-12 Akim Demaille + + * tests/regression.at (input.y): s/YYEOF/MYEOF/, as the skeleton + defines it. + * data/glr.c (yystos): New. + (b4_yysymprint_generate, b4_yydestruct_generate): Invoke. + (YYDSYMPRINT): New. + (yyval): Don't define it, it is handled via M4. + (yyrecoverParseError): Free verbosely the discarded symbols. + * data/yacc.c (yysymprint): Remove, rather... + (b4_yysymprint_generate): invoke. + * data/c.m4 (b4_yysymprint_generate): New. + Accept pointers as arguments, as opposed to the version from + yacc.c. + (b4_yydestruct_generate): Likewise. + * tests/cations.at (Printers and Destructors): Use Bison directives + instead of CPP macros. + Don't rely on internal details. + +2002-11-12 Akim Demaille + + * data/c.m4 (b4_yydestruct_generate, b4_symbol_actions): New. + * data/yacc.c: Rename yychar1 as yytoken, as in glr.c. + Don't work on yychar (i.e., do set it to YYEMPTY, don't match + it against YYEMPTY and so forth), work on yytoken (i.e., set + it to YYEMPTY etc.). + (yydestruct): Replace with a b4_yydestruct_generate invocation. + (b4_symbol_actions): Remove. + * data/glr.c (YYTRANSLATE): As for yacc.c, if negative, it stands + for 0, end-of-input. + +2002-11-12 Akim Demaille + + * doc/bison.texinfo (Destructor Decl): New. + +2002-11-12 Akim Demaille + + * src/tables.c (tables_generate): Use free for pointers that + cannot be NULL, not XFREE. + (pack_vector): Use assert, not fatal, for bound violations. + * src/state.c (state_new): Likewise. + * src/reader.c (reader): Likewise. + * src/lalr.c (set_goto_map): Likewise. + * src/location.h (LOCATION_PRINT): If first_line is 0, just issue + the file name. + +2002-11-12 Akim Demaille + + * src/scan-gram.l, src/reader.h (scanner_last_string_free): + Restore. + * src/scan-gram.l (last_string): Is global to the file, not to + yylex. + * src/parse-gram.y (input): Don't append the epilogue here, + (epilogue.opt): do it here, and free the scanner's obstack. + * src/reader.c (epilogue_set): Rename as... + (epilogue_augment): this. + * data/c.m4 (b4_epilogue): Defaults to empty. + +2002-11-12 Akim Demaille + + * src/getargs.c (long_options): Remove duplicates. + * src/vmsgetargs.c, src/build.com, src/bison.cld, src/vmshlp.mar: + Remove. + * doc/bison.rnh: Remove. + * doc/bison.texinfo (VMS Invocation): Remove. + +2002-11-12 Akim Demaille + + * src/struniq.h, src/struniq.c (struniq_t): Is const. + (STRUNIQ_EQ, struniq_assert, struniq_assert_p): New. + + Use struniq for symbols. + + * src/symtab.h (symbol_t): The tag member is a struniq. + (symbol_type_set): Adjust. + * src/symtab.c (symbol_new): Takes a struniq. + (symbol_free): Don't free the tag member. + (hash_compare_symbol_t, hash_symbol_t): Rename as... + (hash_compare_symbol, hash_symbol): these. + Use the fact that tags as struniqs. + (symbol_get): Use struniq_new. + * src/symlist.h, src/symlist.c (symbol_list_n_type_name_get): + Returns a strniq. + * src/reader.h (merger_list, grammar_currentmerge_set): The name + and type members are struniqs. + * src/reader.c (get_merge_function) + (grammar_current_rule_merge_set): Adjust. + (TYPE, current_type): Are struniq. + + Use struniq for file names. + + * src/files.h, src/files.c (infile): Split into... + (grammar_file, current_file): these. + * src/scan-gram.c (YY_USER_INIT, handle_syncline): Adjust. + * src/reduce.c (reduce_print): Likewise. + * src/getargs.c (getargs): Likewise. + * src/complain.h, src/complain.c: Likewise. + * src/main.c (main): Call struniqs_new early enough to use it for + file names. + Don't free the input file name. + +2002-11-12 Akim Demaille + + * src/symtab.c (symbol_free): Remove dead deactivated code: + type_name are properly removed. + Don't use XFREE to free items that cannot be NULL. + * src/struniq.h, src/struniq.c: New. + * src/main.c (main): Initialize/free struniqs. + * src/parse-gram.y (%union): Add astruniq member. + (yyprint): Adjust. + * src/scan-gram.l (<{tag}>): Return a struniq. + Free the obstack bit that used to store it. + * src/symtab.h (symbol_t): The 'type_name' member is a struniq. + +2002-11-11 Paul Eggert + + Revamp to fix many (but not all) of the C- and M4-related quoting + problems. Among other things, this fixes the Bison bug reported + by Jan Hubicka when processing the Bash grammar; see: + + + Use new @ escapes consistently. Represent brackets with @{ and @} + rather than @<:@ and @:>@, since this works a bit better with dumb + editors like vi. Represent @ with @@, since @ is now consistently + an escape. Use @oline@ and @ofile@ rather than __oline__ and + __ofile__, to avoid unexpected expansions. Similarly, use @output + rather than #output. + + * data/c.m4 (b4_copyright): Omit file name from comment, since + the file name could contain "*/". + (b4_synclines_flag): Don't quote the 2nd argument; it should already + be quoted. All uses changed. + + * data/glr.c: Use new @ escapes consistently. + (b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name, + b4_output_header_suffix, b4_output_header_name, b4_header_guard): + Remove, since they couldn't handle arbitrary characters in file + names. + * data/lalr1.cc: Likewise. + * data/yacc.c: Likewise. + + * src/files.c (output_infix): Remove; all uses removed. + * src/files.h: Likewise. + + * data/glr.c: Remove use of "#ifdef b4_header_guard", since it + mishandled funny characters in file names, and anyway it isn't + needed any more. + * data/yacc.c: Likewise. + * data/lalr1.cc: Use YYSLP_NEEDED instead of b4_header_guard. + + * data/glr.c (YYSTYPE_IS_TRIVIAL): Define when the .h file would. + * data/yacc.c: Likewise. + + * src/muscle_tab.c: Include quotearg.h, since we need to quote C + strings now. + (muscle_init): Quote filename as a C string. + * src/muscle_tab.h (MUSCLE_GROW_STRING_PAIR): Remove; unused. + (MUSCLE_OBSTACK_SGROW, MUSCLE_INSERT_C_STRING): New macros. + * src/output.c (escaped_file_name_output): New function. + (prepare_symbols): Quote tokens for M4. + (prepare): Don't insert output_infix, output_prefix, + output_parser_name, output_header_name; this is now down by scan-skel. + Insert skeleton as a C string. + + * src/output.c (user_actions_output, symbol_destructors_output, + symbol_printers_output): Quote filenames for C and M4. + * src/reader.c (prologue_augment, epilogue_set): Likewise. + + * src/scan-gram.l (): Don't worry about any backslash + escapes other than \\ and \'; this simplifies the code. + (): Likewise, for \\ and \". + (): Escape $ and @, too. + Use new escapes @{ and @} for [ and ]. + + * src/scan-skel.l (yylineno, yyoutname): Remove static vars, replacing + them with auto vars. + Switch to new escape scheme, where @ is the escape character uniformly. + Abort if a stray escape character is found. Avoid unbounded input + buffer when parsing non-escaped text. + + * tests/input.at (Torturing the Scanner): Add tests that @oline@, + __oline__, #output, $@, and @{ do not have unintended meanings. + +2002-11-09 Paul Eggert + + Fix the test failure due to GCC warnings described in + . + * data/glr.c (yyis_pact_ninf, yyis_table_ninf): New macros, which + evaluate to 0 if it's impossible for NINF to be in the respective + table. + (yygetLRActions, yyrecoverParseError): Use them. + + * src/scan-gram.l (unexpected_end_of_file): Fix bug: columns were + counted in the token inserted at end of file. Now takes + location_t *, not location_t, so that the location can be + adjusted. All uses changed. + + * tests/regression.at (Invalid inputs): Adjust wording in + diagnostic to match the new behavior. + + * tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR, + AT_DATA_HORIZONTAL_GRAMMAR, AT_DATA_LOOKAHEADS_GRAMMAR, + AT_DATA_STACK_TORTURE): Replace `assert (x);' with `if (! (x)) + abort ();'. This reduces the runtime of the "Many lookaheads" + test from 27.6 to 2.7 minutes on a 440 MHz Ultrasparc III running + GCC 3.2. + +2002-11-07 Paul Eggert + + * src/parse-gram.y (CHARACTER): Remove unused token. + All uses removed. + + * src/scan-gram.l: Remove stack option. We no longer use the + stack, since the stack was never deeper than 1; instead, use the + new auto var c_context to record the stacked value. + + Remove nounput option. At an unexpected end of file, we now unput + the minimal input necessary to end cleanly; this simplifies the + code. + + Avoid unbounded token sizes where this is easy. + + (unexpected_end_of_file): New function. + Use it to systematize the error message on unexpected EOF. + (last-string): Now auto, not static. + (YY_OBS_FREE): Remove unnecessary do while (0) wrapper. + (scanner_last_string_free): Remove; not used. + (percent_percent_count): Move decl to just before use. + (SC_ESCAPED_CHARACTER): Return ID at unexpected end of file, + not the (never otherwised-used) CHARACTER. + +2002-11-07 Akim Demaille + + Let yyerror always receive the msg as last argument, so that + yyerror can be variadic. + + * data/yacc.c (b4_yyerror_args): New. + Use it when calling yyerror. + * data/glr.c (b4_yyerror_args, b4_lyyerror_args): New. + Use it when calling yyerror. + * doc/bison.texinfo (Error Reporting): Adjust. + * tests/calc.at (_AT_DATA_CALC_Y): Adjust. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Adjust. + +2002-11-06 Akim Demaille + + #line should have quoted strings. + Ideally, this should be done by m4_quotearg. + + * src/scan-skel.l: Include quotearg.h. + Quote __ofile__. + * src/output.c (symbol_printers_output) + (symbol_destructors_output): Quote the file name. + +2002-11-06 Akim Demaille + + * tests/regression.at (Invalid inputs): Adjust to the recent + messages. + +2002-11-06 Akim Demaille + + Restore --no-lines. + Reported by Jim Kent. + + * data/c.m4 (b4_syncline): New. + * data/glr.c, data/yacc.c, data/lalr1.cc: Use it. + * src/reader.c (prologue_augment, epilogue_set): Use b4_syncline. + * src/output.c (user_actions_output): Likewise. + (prepare): Define 'b4_synclines_flag'. + * src/muscle_tab.c (muscle_init): Don't define b4_linef. + +2002-11-06 Akim Demaille + + * src/main.c (main): Free `infile'. + * src/scan-gram.l (handle_syncline): New. + Recognize `#line'. + * src/output.c (user_actions_output, symbol_destructors_output) + (symbol_printers_output): Use the location's file name, not + infile. + * src/reader.c (prologue_augment, epilogue_set): Likewise. + +2002-11-05 Paul Hilfinger + + * src/tables.c (matching_state): Don't allow states to match if + either has GLR conflict entries. + +2002-11-05 Paul Eggert + + * src/scan-gram.l: Use more accurate diagnostics, e.g. + "integer out of range" rather than "invalid value". + * tests/input.at (Invalid $n, Invalid @n): Change expected wording + accordingly. + + Scan <% and %> digraphs in C code as POSIX 1003.1-2001 requires. + Also, remove one static variable in the scanner. + + * src/scan-gram.l (braces_level): Now auto, not static. + Initialize to zero if the compiler is being picky. + (INITIAL): Clear braces_level instead of incrementing it. + (SC_BRACED_CODE): Treat <% and %> as { and } when inside C code, + as POSIX 1003.1-2001 requires. + * src/system.h (IF_LINT): New macro, taken from coreutils. + * configure.ac: Define "lint" if --enable-gcc-warnings. + +2002-11-05 Akim Demaille + + * src/scan-gram.l: When it starts with `%', complain about the + whole directive, not just that `invalid character: %'. + +2002-11-04 Akim Demaille + + * Makefile.maint: Update from Autoconf. + (update, cvs-update, po-update, do-po-update): New. + +2002-11-04 Akim Demaille + + * tests/glr-regr1.at (Badly Collapsed GLR States): Prototype yylex + and yyerror. + Have yyerror `use' its arguments. + * tests/calc.at (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF + returns true when location & yacc & pure & parse-param. + (_AT_DATA_CALC_Y): Let yyerror ``use'' its arguments. + +2002-11-04 Akim Demaille + + * src/location.h (LOCATION_PRINT): Use quotearg slot 3 to avoid + clashes. + * src/scan-gram.l: Use [\'] instead of ['] to pacify + font-lock-mode. + Use complain_at. + Use quote, not quote_n since LOCATION_PRINT no longer uses the + slot 0. + +2002-11-03 Paul Eggert + + * src/reader.c (get_merge_function, grammar_current_rule_check): + Use consistent diagnostics for reporting type name clashes. + Quote the types with <>, for consistency with Yacc. + * tests/input.at (Type Clashes): Adjust to diagnostic changes. + +2002-11-03 Akim Demaille + + * data/c.m4 (b4_identification, b4_user_args, b4_parse_param): + New. + * data/yacc.m4 (b4_pure_args, b4_Pure_args): New. + (b4_parse_param): Remove. + Use b4_identification. + Propagate b4_pure_args where needed to pass them to yyerror. + * data/glr.m4 (b4_parse_param): Remove. + (b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args) + (b4_lpure_formals): New. + Use b4_identification. + (YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by + b4_user_formals and b4_user_args. + (yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer) + (yyreportAmbiguity): When using a pure parser, also need + the location, and the parse-params. + Adjust callers. + (yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError): + When using a pure parser, also need the parse-params. + Adjust callers. + * tests/calc.at: Test pure (%pure-parser) and absolutely pure + (%pure-parser + %parse-param) LALR and GLR parsers. + (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF, + AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF, + AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF. + (_AT_DATA_CALC_Y): Equip for purity of yyerror. + (_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity. + * doc/bison.texinfo: Untabify the whole file. + (Parser Function): Document %parse-param, deprecate YYPARSE_PARAM. + (Pure Calling): Document %lex-param, deprecate YYLEX_PARAM. + (Error Reporting): Adjust to these new directives. + Document %error-verbose, deprecate YYERROR_VERBOSE. + +2002-11-03 Akim Demaille + + * tests/calc.at: Change all the AT_CHECK_CALC_LALR and + AT_CHECK_CALC_GLR invocations to use % directives, instead of + command line options. + * tests/cxx-type.at: Formatting changes. + +2002-11-03 Paul Eggert + + * src/scan-gram.l: Revamp to fix POSIX incompatibilities, + to count columns correctly, and to check for invalid inputs. + + Use mbsnwidth to count columns correctly. Account for tabs, too. + Include mbswidth.h. + (YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS. + (extend_location): New function. + (YY_LINES): Remove. + + Handle CRLF in C code rather than in Lex code. + (YY_INPUT): New macro. + (no_cr_read): New function. + + Scan UCNs, even though we don't fully handle them yet. + (convert_ucn_to_byte): New function. + + Handle backslash-newline correctly in C code. + (SC_LINE_COMMENT, SC_YACC_COMMENT): New states. + (eols, blanks): Remove. YY_USER_ACTION now counts newlines etc.; + all uses changed. + (tag, splice): New EREs. Do not allow NUL or newline in tags. + Use {splice} wherever C allows backslash-newline. + YY_STEP after space, newline, vertical-tab. + ("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT). + + (letter, id): Don't assume ASCII; e.g., spell out a-z. + + ({int}, handle_action_dollar, handle_action_at): Check for integer + overflow. + + (YY_STEP): Omit trailing semicolon, so that it's more like C. + + (): Allow \0 and \00 + as well as \000. Check for UCHAR_MAX, not 255. + Allow \x with an arbitrary positive number of digits, as in C. + Check for overflow here. + Allow \? and UCNs, for compatibility with C. + + (handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision + with quote slot used by complain_at. + + * tests/input.at: Add tests for backslash-newline, m4 quotes + in symbols, long literals, and funny escapes in strings. + + * configure.ac (jm_PREREQ_MBSWIDTH): Add. + * lib/Makefile.am (libbison_a_SOURCES): Add mbswidth.h, mbswidth.c. + * lib/mbswidth.h, lib/mbswidth.c: New files, from GNU gettext. + * m4/Makefile.am (EXTRA_DIST): Add mbswidth.m4. + * m4/mbswidth.m4: New file, from GNU coreutils. + + * doc/bison.texinfo (Grammar Outline): Document // comments. + (Symbols): Document that trigraphs have no special meaning in Bison, + nor is backslash-newline allowed. + (Actions): Document that trigraphs have no special meaning. + + * src/location.h (LOCATION_COLUMNS, LOCATION_LINES): Remove; + no longer used. + +2002-11-02 Paul Eggert + + * src/reader.c: Don't include quote.h; not needed. + (get_merge_function): Reword warning to be consistent with + type clash diagnostic in grammar_current_rule_check. + + * lib/quotearg.c (quotearg_buffer_restyled): Fix off-by-two + bug in trigraph handling. + + * src/output.c (prepare_symbols): When printing token names, + escape "[" as "@<:@" and likewise for "]". + + * src/system.h (errno): Remove declaration, as we are now + assuming C89 or better, and C89 guarantees errno. + +2002-10-30 Paul Eggert + + * lib/bitset_stats.c (bitset_stats_read, bitset_stats_write): + Check for close failures. + * src/files.h (xfclose): Return void, not int, since it always + returned zero. + * src/files.c (xfclose): Likewise. Report I/O error if ferror + indicates one. + * src/output.c (output_skeleton): Use xfclose rather than fclose + and ferror. xfclose now checks ferror. + + * data/glr.c (YYLEFTMOST_STATE): Remove. + (yyreportTree): Use a stack-based leftmost state. This avoids + our continuing battles with bogus warnings about initializers. + +2002-10-30 Akim Demaille + + * src/system.h: Don't use #ifdef/#ifndef on HAVE_ values, only + #if. + +2002-10-29 Paul Hilfinger + + * tests/glr-regr1.at: New test for reported regressions. + * tests/testsuite.at: Add glr-regr1.at test. + * tests/Makefile.am: Add glr-regr1.at test. + +2002-10-24 Paul Eggert + + Version 1.75a. + + * tests/calc.at (_AT_DATA_CALC_Y): Remove unused strcat declaration. + * tests/cxx-type.at (_AT_TEST_GLR_CALC): Include stdlib.h, since + we use malloc. Don't assume 'A' through 'Z' are contiguous. + Don't assume strdup exists; POSIX says its an XSI extension. + Check for buffer overflow on input. + +2002-10-24 Akim Demaille + + * src/output.c (output_skeleton): Don't disable M4sugar comments + too soon: it results in comments being expanded. + * data/yacc.c, data/glr.c, data/lalr1.cc: Do it right before the + first output. + +2002-10-24 Akim Demaille + + * data/yacc.c (m4_int_type): New. + * data/c.m4 (m4_int_type): Don't use yysigned_char, but `signed + char' as only yacc.c wants K&R portability. + * data/glr.c (yysigned_char): Remove. + * data/lalr1.cc: Rename the trailing b4_name as b4_parser_class_name. + Reported by Quoc Peyrot. + +2002-10-23 Paul Eggert + + * src/main.c (main): With --trace=time, report times even if a + non-fatal error occurs. Formerly, the times were reported in some + such cases but not in others. + * src/reader.c (reader): Just return if a complaint has been issued, + instead of exiting, so that 'main' can report times. + +2002-10-22 Akim Demaille + + * src/system.h: Include sys/types. + Reported by Bert Deknuydt. + +2002-10-23 Paul Eggert + + * configure.ac (AC_PROG_LEX): Use instead of AM_PROG_LEX. + Suggested by Art Haas. + +2002-10-22 Paul Eggert + + * src/complain.c (exit) [! (STDC_HEADERS || _LIBC)]: Remove exit + decl; not needed any more. + * src/main.c (main): Use return to exit, undoing yesterday's change. + The last OS that we could find where this wouldn't work is + SunOS 3.5, and that's too old to worry about now. + + * data/glr.c (struct yyltype): Define members even when not + doing locations. This is more consistent with yacc.c, and it + works around the following bug reports: + http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00106.html + http://lists.gnu.org/archive/html/bug-bison/2002-10/msg00111.html + + * doc/bison.texinfo: Minor spelling and typographical fixes. Use + @acronym consistently. Standardize on "Yacc" instead of "YACC", + "Algol" instead of "ALGOL". Give a bit more history about BNF. + +2002-10-22 Akim Demaille + + * data/README: New. + +2002-10-21 Paul Eggert + + Be consistent about 'bool'; the old code used an enum in one + module and an int in another, and this violates the C standard. + * m4/stdbool.m4: New file, from coreutils 4.5.3. + * configure.ac (AC_HEADER_STDBOOL): Add. + * m4/Makefile.am (EXTRA_DIST): Add stdbool.m4. + * src/muscle_tab.c (hash_compare_muscles): (a ? FALSE : TRUE) -> (! a) + * src/symtab.c (hash_compare_symbol_t): Likewise. + * src/system.h (bool, false, true): Use a definition consistent + with ../lib/hash.c. All uses changed. + + * src/complain.c (warning_issued): Renamed from warn_message_count, + so that we needn't worry about integer overflow (!). + Now of type bool. All uses changed. + (complaint_issued): Renamed from complain_message_count; likewise. + + * src/main.c (main): Use exit to exit with failure. + + * src/complain.c (fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS + rather than 1 and 0. + * src/main.c (main): Likewise. + * src/getargs.c (getargs): Likewise. + * src/reader.c (reader): Likewise. + + * src/getarg.c (getargs): Remove duplicate code for + "Try `bison --help'". + + * src/files.c (xfopen, xfclose): Use EXIT_FAILURE rather than 2. + What was that "2" for? + + * src/complain.h (fatal, fatal_at): Add __attribute__((__noreturn__)). + * src/getargs.c (usage): Likewise. + + * src/getargs.c (getargs): When there are too few operands, report + the last one. When there are too many, report the first extra + one. This is how diffutils does it. + +2002-10-20 Paul Eggert + + Remove K&R vestiges. + * configure.ac (AC_C_CONST, AM_C_PROTOTYPES): Remove. + * src/complain.c (VA_START): Remove. Assume prototypes. + (vfprintf) [! (HAVE_VPRINTF || defined vfprintf)]: New macro. + (private_strerror, warn_at, warn, complain_at, complain, fatal_at, + fatal): Assume prototypes. + * src/complain.h: Assume prototypes. + * src/system.h (PARAMS): Remove. + Include unconditionally, since it's guaranteeed even + for a freestanding C89 compiler. + (SHRT_MIN, SHRT_MAX): Remove, since C89 guarantees them. + * src/vmsgetargs.c (getargs, cli_present, cli_get_value): Prototype. + +2002-10-20 Akim Demaille + + * src/muscle_tab.c (muscle_grow): Remove trailing debugging code. + * data/glr.c (YY_USER_FORMALS, YY_USER_ARGS): New. + (yyuserAction, yydoAction, yyglrReduce, yyresolveValue) + (yyresolveStates, yyresolveAction, yyresolveStack) + (yyprocessOneStack): Use them. + (yy_reduce_print): New. + * tests/calc.at (_AT_DATA_CALC_Y): Exercise %parse-param. + +2002-10-20 Akim Demaille + + * data/c.m4 (b4_c_ansi_args): Recognize functions with no + arguments and output `void'. + (b4_c_function): Rename as... + (b4_c_function_def): this. + (b4_c_function_decl, b4_c_ansi_function_def) + (b4_c_ansi_function_decl): New. + Change the interpretation of the arguments: before `int, foo', now + `int foo, foo'. + * data/yacc.c (yyparse): Prototype and define thanks to these. + Adjust b4_c_function_def uses. + * data/glr.c (yyparse): Likewise, but ANSI only. + +2002-10-20 Akim Demaille + + * src/output.c (prepare): Move the definition of `tokens_number', + `nterms_number', `undef_token_number', `user_token_number_max' + to... + (prepare_tokens): Here. + (prepare_tokens): Rename as... + (prepare_symbols): this. + (prepare): Move the definition of `rules_number' to... + (prepare_rules): here. + (prepare): Move the definition of `last', `final_state_number', + `states_number' to... + (prepare_states): here. + * data/yacc.c, data/lalr1.cc, data/glr.c: Normalize `>' into `<'. + +2002-10-20 Akim Demaille + + * src/tables.h, src/tables.c, src/output.c: Comment changes. + +2002-10-20 Akim Demaille + + * data/yacc.c, data/yacc.c (b4_location_if, b4_pure_if): Move to... + * data/c.m4: here. + +2002-10-20 Akim Demaille + + * src/output.c (prepare): Use MUSCLE_INSERT_STRING. + * src/muscle_tab.c (muscle_pair_list_grow): Rename `val as + `pair'. + (muscle_init): Move the `b4_ltype', `b4_maxdepth', `b4_initdepth', + `name' to... + * data/glr.c, data/lalr1.cc, data/yacc.c (b4_location_type) + (b4_stack_depth_init, b4_stack_depth_max, b4_parser_class_name): + These. + +2002-10-19 Paul Eggert + + Do not create a temporary file, as that involves security and + cleanup headaches. Instead, use a pair of pipes. + Derived from a suggestion by Florian Krohm. + * lib/subpipe.c, lib/subpipe.h, m4/subpipe.m4: New files. + * lib/mkstemp.c, lib/readpipe.c, lib/tempname.c, m4/mkstemp.m4: Remove. + * configure.ac (UTILS_FUNC_MKSTEMP, jm_PREREQ_TEMPNAME): Remove. + (BISON_PREREQ_SUBPIPE): Add. + * lib/Makefile.am (libbison_a_SOURCES): Remove readpipe.c. + Add subpipe.h, subpipe.c. + * m4/Makefile.am (EXTRA_DIST): Remove mkstemp.m4. Add subpipe.m4. + * po/POTFILES.in: Add lib/subpipe.c. + * src/output.c: Include "subpipe.h". + (m4_invoke): Remove decl. + (scan_skel): New decl. + (output_skeleton): Use pipe rather than temporary file for m4 input. + Check that m4sugar.m4 is readable, to avoid deadlock. + Check for pipe I/O error. + * src/scan-skel.l (readpipe): Remove decl. + (scan_skel): New function, to be used in place of m4_invoke. + Read from stream rather than file. + + * lib/timevar.c (TICKS_TO_MSEC, CLOCKS_TO_MSEC): Do not cast to + float, as this generates a warning on Solaris 8 + GCC 3.2 with + --enable-gcc-warnings. Instead, divide into 1.0 rather than 1; + this generates a more-accurate value anyway. + + * lib/timevar.c (timervar_accumulate): Rename locals to + avoid confusion with similarly-named more-global. + * src/muscle_tab.c (muscle_pair_list_grow): Likewise. + + * src/output.c (prepare): Use xstrdup to convert char const * + to char *, to avoid GCC warning. + +2002-10-19 Akim Demaille + + * tests/calc.at (_AT_DATA_CALC_Y): Define VAL, LOC, LEX_FORMALS, + LEX_PRE_FORMALS, LEX_ARGS, LEX_PRE_ARGS, USE_LEX_ARGS. + Use them to have `calc.y' ready for %pure-parser. + * data/yacc.c (YYLEX): Pass a yylex return type to + b4_c_function_call. + +2002-10-19 Akim Demaille + + Prototype support of %lex-param and %parse-param. + + * src/parse-gram.y: Add the definition of the %lex-param and + %parse-param tokens, plus their rules. + Drop the `_' version of %glr-parser. + Add the "," token. + * src/scan-gram.l (INITIAL): Scan them. + * src/muscle_tab.c: Comment changes. + (muscle_insert, muscle_find): Rename `pair' as `probe'. + * src/muscle_tab.h (MUSCLE_INSERT_PREFIX): Remove unused. + (muscle_entry_s): The `value' member is no longer const. + Adjust all dependencies. + * src/muscle_tab.c (muscle_init): Adjust: use + MUSCLE_INSERT_STRING. + Initialize the obstack earlier. + * src/muscle_tab.h, src/muscle_tab.c (muscle_grow) + (muscle_pair_list_grow): New. + * data/c.m4 (b4_c_function_call, b4_c_args): New. + * data/yacc.c (YYLEX): Use b4_c_function_call to honor %lex-param. + * tests/calc.at: Use %locations, not --locations. + (AT_CHECK_CALC_GLR): Use %glr-parser, not %glr_parser. + +2002-10-19 Akim Demaille + + * src/getargs.c (usage): Take status as argument and exit + accordingly. + Report the traditional `Try ... --help' message when status != 0. + (usage, version): Don't take a FILE * as arg, it is pointless. + (getargs): When there is an incorrect number of arguments, make it + an error, and report it GNUlically thanks to `usage ()'. + +2002-10-18 Paul Eggert + + * data/glr.c (yyreportParseError): Don't assume that sprintf + yields the length of the printed string, as this is not true + on SunOS 4.1.4. Reported by Peter Klein. + + * tests/calc.at (_AT_DATA_CALC_Y): #undef memcmp and realloc. + * tests/conflicts.at (%nonassoc and eof): Likewise. + Fixes SunOS 4.1.4 test failure reported by Peter Klein. + +2002-10-17 Akim Demaille + + * src/getargs.h (trace_e): Add trace_scan, and trace_parse. + * src/getargs.c (trace_types, trace_args): Adjust. + * src/reader.c (grammar_current_rule_prec_set) + (grammar_current_rule_dprec_set, grammar_current_rule_merge_set): + Standardize error messages. + And s/@prec/%prec/! + (reader): Use trace_flag to enable scanner/parser debugging, + instead of an adhoc scheme. + * src/scan-gram.l: Remove trailing debugging code. + +2002-10-16 Paul Eggert + + * src/muscle_tab.h (MUSCLE_TAB_H_): Was misspelled as + MUSCLE_TAB_H. + + * NEWS: Officially drop support for building Bison with K&R C, + since it didn't work anyway and it's not worth worrying about. + * Makefile.maint (wget_files): Remove ansi2knr.c. + (ansi2knr.c-url_prefix): Remove. + * lib/.cvsignore: Remove ansi2knr, ansi2knr.*. + * lib/Makefile.am (AUTOMAKE_OPTIONS): Remove. + * src/Makefile.am (AUTOMAKE_OPTIONS): Remove. + +2002-10-15 Paul Eggert + + Stop using the "enum_" trick for K&R-style function definitions; + it confused me, and I was the author! Instead, assume that people + who want to use K&R C compilers (when using these modules in GCC, + perhaps?) will run ansi2knr. + + * lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): Remove. + All uses of "enum_" changed to "enum ". + * lib/ebitset.c (enum_ebitset_find_mode): Likewise. + * lib/lbitset.c (enum_lbitset_find_mode): Likewise. + + * lib/abitset.c (abitset_and, abitset_and_cmp, abitset_and_or, + abitset_and_or_cmp, abitset_andn, abitset_andn_cmp, + abitset_andn_or, abitset_andn_or_cmp, abitset_bytes, abitset_copy, + abitset_copy1, abitset_disjoint_p, abitset_empty_p, + abitset_equal_p, abitset_init, abitset_list, abitset_list_reverse, + abitset_not, abitset_ones, abitset_or, abitset_or_and, + abitset_or_and_cmp, abitset_or_cmp, abitset_reset, abitset_set, + abitset_size, abitset_small_list, abitset_subset_p, abitset_test, + abitset_unused_clear, abitset_xor, abitset_xor_cmp, abitset_zero): + Use function prototypes; this removes the need for declaring + static functions simply to provide their prototypes. + * lib/bitset.c (bitset_alloc, bitset_and_or_, bitset_and_or_cmp_, + bitset_andn_or_, bitset_andn_or_cmp_, bitset_bytes, bitset_copy_, + bitset_count_, bitset_create, bitset_dump, bitset_first, + bitset_free, bitset_init, bitset_last, bitset_next, + bitset_obstack_alloc, bitset_obstack_free, bitset_only_set_p, + bitset_op4_cmp, bitset_or_and_, bitset_or_and_cmp_, bitset_prev, + bitset_print, bitset_release_memory, bitset_toggle_, + bitset_type_choose, bitset_type_get, bitset_type_name_get, + debug_bitset): Likewise. + * lib/bitset.h (bitset_set, bitset_reset, bitset_test): Likewise. + * lib/bitset_stats.c (bitset_log_histogram_print, + bitset_percent_histogram_print, bitset_stats_and, + bitset_stats_and_cmp, bitset_stats_and_or, + bitset_stats_and_or_cmp, bitset_stats_andn, bitset_stats_andn_cmp, + bitset_stats_andn_or, bitset_stats_andn_or_cmp, bitset_stats_copy, + bitset_stats_count, bitset_stats_disable, bitset_stats_disjoint_p, + bitset_stats_dump, bitset_stats_empty_p, bitset_stats_enable, + bitset_stats_equal_p, bitset_stats_free, bitset_stats_init, + bitset_stats_list, bitset_stats_list_reverse, bitset_stats_not, + bitset_stats_ones, bitset_stats_or, bitset_stats_or_and, + bitset_stats_or_and_cmp, bitset_stats_or_cmp, bitset_stats_print, + bitset_stats_print_1, bitset_stats_read, bitset_stats_reset, + bitset_stats_set, bitset_stats_size, bitset_stats_subset_p, + bitset_stats_test, bitset_stats_toggle, bitset_stats_type_get, + bitset_stats_write, bitset_stats_xor, bitset_stats_xor_cmp, + bitset_stats_zero): Likewise. + * lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free, + bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure, + bitsetv_dump, debug_bitsetv): Likewise. + * lib/ebitset.c (ebitset_and, ebitset_and_cmp, ebitset_andn, + ebitset_andn_cmp, ebitset_bytes, ebitset_copy, ebitset_copy_, + ebitset_copy_cmp, ebitset_disjoint_p, ebitset_elt_add, + ebitset_elt_alloc, ebitset_elt_calloc, ebitset_elt_find, + ebitset_elt_free, ebitset_elt_last, ebitset_elt_remove, + ebitset_elt_zero_p, ebitset_elts_grow, ebitset_empty_p, + ebitset_equal_p, ebitset_free, ebitset_init, ebitset_list, + ebitset_list_reverse, ebitset_not, ebitset_ones, ebitset_op3_cmp, + ebitset_or, ebitset_or_cmp, ebitset_release_memory, ebitset_reset, + ebitset_set, ebitset_size, ebitset_subset_p, ebitset_test, + ebitset_weed, ebitset_xor, ebitset_xor_cmp, ebitset_zero): + Likewise. + * lib/lbitset.c (debug_lbitset, lbitset_and, lbitset_and_cmp, + lbitset_andn, lbitset_andn_cmp, lbitset_bytes, lbitset_copy, + lbitset_copy_cmp, lbitset_disjoint_p, lbitset_elt_alloc, + lbitset_elt_calloc, lbitset_elt_find, lbitset_elt_free, + lbitset_elt_link, lbitset_elt_unlink, lbitset_elt_zero_p, + lbitset_empty_p, lbitset_equal_p, lbitset_free, lbitset_init, + lbitset_list, lbitset_list_reverse, lbitset_not, lbitset_ones, + lbitset_op3_cmp, lbitset_or, lbitset_or_cmp, lbitset_prune, + lbitset_release_memory, lbitset_reset, lbitset_set, lbitset_size, + lbitset_subset_p, lbitset_test, lbitset_weed, lbitset_xor, + lbitset_xor_cmp, lbitset_zero): Likewise. + +2002-10-14 Akim Demaille + + Version 1.75. + +2002-10-14 Akim Demaille + + * tests/Makefile.am (maintainer-check-posix): New. + +2002-10-14 Akim Demaille + + * data/glr.c [YYDEBUG] (YYLEFTMOST_STATE): Initialize the yyloc + member. + +2002-10-14 Akim Demaille + + * src/tables.c (table_ninf_remap): base -> tab. + Reported by Matt Rosing. + +2002-10-14 Paul Eggert + + * tests/action.at, tests/calc.at, tests/conflicts.at, + tests/cxx-type.at, tests/headers.at, tests/input.at, + tests/regression.at, tests/synclines.at, tests/torture.at: + Say "bison -o foo.c foo.y", not "bison foo.y -o foo.c", + so that the tests still work even if POSIXLY_CORRECT is set. + * doc/bison.texinfo (Rpcalc Compile, Invocation): Likewise. + + * data/c.m4 (b4_int_type): Use yysigned_char instead of signed char, + for portability to K&R hosts. Fix typo: signed char is guaranteed + only to 127, not to 128. + * data/glr.c (yysigned_char): New type. + * data/yacc.c (yysigned_char): Likewise. + * tests/regression.at (Web2c Actions): signed char -> yysigned_char. + +2002-10-13 Paul Eggert + + * data/yacc.c (yyparse): Rewrite to avoid "comparison is always + true due to limited range of data type" warning from GCC. + + * data/c.m4 (b4_token_defines): Protect against double-inclusion + by wrapping enum yytokentype's definition inside #ifndef + YYTOKENTYPE. This undoes a bug I introduced on 2002-10-12. + +2002-10-13 Akim Demaille + + * data/glr.c (yyglrShiftDefer, yyaddDeferredAction, yydoAction): + Un yy- yyrhs to avoid the name clash with the global YYRHS. + +2002-10-13 Akim Demaille + + * Makefile.maint: Update from Autoconf 2.54. + * m4/strerror_r.m4 (AC_FUNC_STRERROR_R): Remove, shipped with 2.54. + +2002-10-13 Akim Demaille + + * src/print.c (print_state): Separate the list of solved conflicts + from the other items. + * tests/conflicts.at (Resolved SR Conflicts): Adjust. + +2002-10-13 Akim Demaille + + Let nondeterministic skeletons be usable with deterministic + tables. + + With the patch, GAWK compiled by GCC without -O2 passes its test + suite using a GLR parser driven by LALR tables. It fails with -O2 + because `struct stat' gives two different answers on my machine: + 88 (definition of an auto var) and later 96 (memset on this var). + Hence the stack is badly corrumpted. The headers inclusion is to + blame: if I move the awk.h inclusion before GLR's system header + inclusion, the two struct stat have the same size. + + * src/tables.c (pack_table): Always create conflict_table. + (token_actions): Always create conflict_list. + * data/glr.c (YYFLAG): Remove, unused. + +2002-10-13 Akim Demaille + + * configure.ac (AC_GNU_SOURCE): Use it instead of hand written code. + (O0FLAGS): New. + (VALGRIND, GXX): New. + * tests/atlocal.in (CFLAGS): Use O0FLAGS. + * tests/bison.in: Run $PREBISON a pre-command. + * tests/Makefile.am (maintainer-check, maintainer-check-valgrind) + (maintainer-check-g++): New. + * Makefile.am (maintainer-check): New. + +2002-10-13 Akim Demaille + + * data/glr.c: Formatting changes. + Tweak some trace messages to match yacc.c's. + +2002-10-13 Akim Demaille + + GLR parsers sometimes raise parse errors instead of performing the + default reduction. + Reported by Charles-Henry de Boysson. + + * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Don't + check the length of the traces when %glr. + (_AT_CHECK_CALC_ERROR): Also skip `^Stack' lines, coming from + GLR's traces. + (AT_CHECK_CALC_LALR, AT_CHECK_CALC_GLR): New. + Test GLR parsers. + * data/glr.c (YYLEFTMOST_STATE): Fix its value. + (yyltype): Remove the yy prefix from the member names. + (yytable): Complete its comment. + (yygetLRActions): Map error action number from YYTABLE from + YYTABLE_NINF to 0. + (yyisErrorAction): No longer compare YYACTION to YYPACT_NINF + (which was a bug: it should have been YYTABEL_NINF, and yet it was + not satisfying as we could compare an YYACTION computed from + YYDEFACT to YYTABLE_NINF although they are unrelated): 0 is the + only value for error actions. + (yyreportParseError): In verbose parse error messages, don't issue + `error' in the list of expected tokens. + * data/yacc.c (yyparse) : Rewrite the decoding of the + next action to perform to match glr.c's decoding. + (yytable): Complete its comment. + +2002-10-13 Paul Eggert + + Fix problem reported by Henrik Grubbstroem in + : + "nonterm: { $$ = 123; } { $$ = $1; };" was wrongly rejected, + because the Bison parser reads the second action before reducing + the first one. + * src/scan-gram.l (rule_length): New static var. + Use it to keep track of the rule length in the scanner, since + we can't expect the parser to be in lock-step sync with the scanner. + (handle_action_dollar, handle_action_at): Use this var. + * tests/actions.at (Exotic Dollars): Test for the problem. + +2002-10-12 Paul Eggert + + * lib/timevar.c [! IN_GCC && HAVE_SYS_TIME_H]: Include . + * m4/timevar.m4 (BISON_PREREQ_TIMEVAR): Check for . + Include when checking for clock_t and struct tms. + Use same include order as source. + This is for the SunOS 4.1.4 porting bug reported by Peter Klein in + . + + * lib/timevar.c: Update copyright date and clarify comments. + (get_time) [IN_GCC]: Keep the GCC version for reference. + + * lib/timevar.c, lib/timevar.h, lib/timevar.def: Import + GCC version as of today, then merge Bison's changes. + Change "GCC" to "Bison" in copyright notice. timevar.def's + author is Akim, so change that too. + + * src/reader.c (grammar_current_rule_check): + Don't worry about the default action if $$ is untyped. + Prevents bogus warnings reported by Jim Gifford in + . + + * data/c.m4 (b4_token_enum): Do not define YYTOKENTYPE. + * data/glr.c, data/lalr1.cc, data/yacc.c: + Output token definitions before the first part of user declarations. + Fixes compatibility problem reported by Jim Gifford for kbd in + . + +2002-10-11 Paul Eggert + + * data/yacc.c (yyreport_parse_error): Remove, putting its body into... + (yyparse): here. This undoes some of the 2002-07-25 change. + Compatibility problem reported by Ralf S. Engelschall with + OSSP cfg . + +2002-10-11 Akim Demaille + + * tests/regression.at Characters Escapes): New. + * src/scan-gram.l (SC_ESCAPED_CHARACTER): Accept \' in strings and + characters. + Reported by Jan Nieuwenhuizen. + +2002-10-11 Akim Demaille + + * po/id.po: New. + +2002-10-10 Paul Eggert + + Portability fixes for bitsets; this also avoids several GCC + warnings. + + * lib/abitset.c: Include , for offsetof. + * lib/lbitset.c: Likewise. + + * lib/abitset.c (abitset_bytes): Return a size that is aligned + properly for vectors of objects. Do not assume that adding a + header size to a multiple of a word size yields a value that is + properly aligned for the whole union. + * lib/bitsetv.c (bitsetv_alloc): Likewise. + + * lib/bitset_stats.c (bitset_stats_bytes): Adjust to new, + unique names for structures. + * lib/ebitset.c (ebitset_bytes): Likewise. + * lib/lbitset.c (lbitset_bytes): Likewise. + + * lib/abitset.c (abitset_ones, abitset_zero, abitset_empty_p, + abitset_copy1, abitset_not, abitset_equal_p, abitset_subset_p, + abitset_disjoint_p, abitset_and, abitset_and_cmp, abitset_andn, + abitset_andn_cmp, abitset_or, abitset_or_cmp, abitset_xor, + abitset_xor_cmp, abitset_and_or, abitset_and_or_cmp, + abitset_andn_or, abitset_andn_or_cmp, abitset_or_and, + abitset_or_and_cmp, abitset_copy): Supply prototype decls, + to improve the type-checking that GCC can do. + * lib/bitset.c (bitset_op4_cmp): Likewise. + * lib/bitset_stats.c (bitset_stats_count, + bitset_stats_empty_p, bitset_stats_ones, bitset_stats_zero, + bitset_stats_copy, bitset_stats_disjoint_p, + bitset_stats_equal_p, bitset_stats_not, bitset_stats_subset_p, + bitset_stats_and, bitset_stats_and_cmp, bitset_stats_andn, + bitset_stats_andn_cmp, bitset_stats_or, bitset_stats_or_cmp, + bitset_stats_xor, bitset_stats_xor_cmp, bitset_stats_and_or, + bitset_stats_and_or_cmp, bitset_stats_andn_or, + bitset_stats_andn_or_cmp, bitset_stats_or_and, + bitset_stats_or_and_cmp): Likewise. + * lib/lbitset.c (lbitset_and, lbitset_and_cmp, lbitset_andn, + lbitset_andn_cmp, lbitset_or, lbitset_or_cmp, lbitset_xor, + lbitset_xor_cmp, lbitset_empty_p, lbitset_ones, lbitset_not, + lbitset_subset_p, lbitset_disjoint_p, debug_lbitset): Likewise. + + * lib/abitset.h: Include bitset.h, not bbitset.h. + * lib/ebitset.h: Likewise. + * lib/lbitset.h: Likewise. + + * lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): New types. + All instances of parameters of type enum bitset_opts are now of + type enum_bitset_opts, to conform to the C Standard, and similarly + for enum_bitset_type. + * lib/ebitset.c (enum_ebitset_find_mode): Likewise. + * lib/lbitset.c (enum_lbitset_find_mode): Likewise. + + Do not use "struct bitset_struct" to mean different things in + different modules. Not only is this confusing, it violates + the C Standard, which requires that structure types in different + modules must be compatible if one is to be passed to the other. + * lib/bbitset.h (bitset): Now points to a union, not to a struct. + All instances of "struct bitset_struct *" replaced with "bitset". + * lib/bitset.h (struct bitset_struct): Remove, replacing with.... + (union bitset_union, struct abitset_struct, struct ebitset_struct, + struct lbitset_struct, struct bitset_stats_struct): New types. + All uses of struct bitset_struct changed to union bitset_union, + etc. + * lib/abitset.c (struct abitset_struct, abitset, + struct bitset_struct): Remove. + * lib/bitset_stats.c (struct bitset_stats_struct, bitset_stats, + struct bitset_struct): Remove. + * lib/ebitset.c (struct ebitset_struct, ebitset, struct + bitset_struct): Remove. + * lib/lbitset.c (struct lbitset_struct, lbitset, bitset_struct): + Likewise. + + Do not call a function of type T using a call that assumes the + function is of a different type U. Standard C requires that a + function must be called with a type that is compatible with its + definition. + * lib/bbitset.h (bitset_and_or_, bitset_andn_or_, bitset_or_and_): + New decls. + * lib/bitset.c (bitset_and_or_, bitset_andn_or_, bitset_or_and_): + New functions. + * lib/ebitset.c (PFV): Remove. + * lib/lbitset.c (PFV): Likewise. + * lib/ebitset.c (ebitset_and, ebitset_andn, ebitset_or, + ebitset_xor, ebitset_copy, ebitset_ones, ebitset_empty_p): New + decls. + (ebitset_and, ebitset_andn, ebitset_or, ebitset_xor): New functions. + (ebitset_vtable): Use them. + * lib/lbitset.c (lbitset_and, lbitset_andn, lbitset_or, + lbitset_xor): New functions. + (lbitset_vtable): Use them. + + * lib/bitset.h (bitset_next, bitset_prev, bitset_only_set_p): + Declare. + + * lib/bitsetv.c (bitsetv_alloc): Add a cast to (void *) to avoid a + GCC warning. + * lib/lbitset.c (LBITSET_CURRENT1): Likewise. + Use offsetof, for simplicity. + +2002-10-06 Paul Eggert + + * lib/bitset.h (bitset_reset): Do not assume that bitset_word is + the same width as int. This reapplies a hunk of the 2002-08-12 patch + , + which was inadvertently undone by the 2002-09-30 patch. + * lib/lbitset.c (debug_lbitset): Do not assume that bitset_word is + the same width as int. + +2002-10-04 Paul Eggert + + Version 1.50. + + * configure.ac (AC_INIT), NEWS: Increment version number. + + * doc/bison.texinfo: Minor spelling, grammar, and white space + fixes. + (Symbols): Mention that any negative value returned from yylex + signifies end-of-input. Warn about negative chars. Mention + the portable Standard C character set. + + The GNU coding standard says CFLAGS and YFLAGS are reserved + for the installer to set. + * lib/Makefile.am (AM_CFLAGS): Renamed from CFLAGS. + * src/Makefile.am (AM_CFLAGS): Likewise. + (AM_YFLAGS): Renamed from YFLAGS. + + Fix some MAX and MIN problems. + * src/gram.h (ITEM_NUMBER_MIN): MIN_MAX -> INT_MIN. + * src/lalr.h (GOTO_NUMBER_MAX): INT_MAX -> SHRT_MAX. + * src/symtab.h (SYMBOL_NUMBER_MAX): New macro. + * src/reader.c (reader): Use it. + + * tests/regression.at (Braces parsing): Use grep, not fgrep, as + POSIX 1003.1-2001 has removed fgrep. + +2002-10-04 Michael Hayes + + * lib/bbitset.h (BITSET_WINDEX_MAX): Redefine so that it cannot be + interpreted as signed. + * lib/ebitset.c (ebitset_list): Fix bug. + +2002-10-01 Paul Eggert + + More fixes for 64-bit hosts and large bitsets. + + * lib/abitset.c (struct abitset_struct.n_bits, abitset_small_list, + abitset_size, abitset_list, abitset_list_reverse, abitset_list): + Use bitset_bindex, not int or unsigned int or size_t, to count bits. + * lib/bbitset.h (struct bitset_vtable.size, struct bitset_vtable.count, + struct bitset_vtable.list, struct bitset_vtable.list_reverse, + bitset_count_, bitset_next, bitset_prev, bitset_first, bitset_last, + bitset_count_): Likewise. + * lib/bitset.h (bitset_iterator.num, bitset_iterator.i, + bitset_first, bitset_last): Likewise. + * lib/bitset_stats.c (bitset_stats_size, bitset_stats_list, + bitset_stats_list_reverse, bitset_stats_size, + bitset_stats_count, bitset_stats_list, bitset_stat_list_reverse): + Likewise. + * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise. + * lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free, + bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure, + bitsetv_reflexive_transitive_closure): Likewise. + * lib/bitsetv.h (bitsetv_alloc, bitsetv_create): Likewise. + * lib/ebitset.c (ebitset_size, ebitset_list, ebitset_list_reverse): + Likewise. + * lib/lbitset.c (lbitset_size, lbitset_list, lbitset_list_merge): + Likewise. + + * lib/abitset.c (abitset_ones, abitset_zero, abitset_bytes): + Use size_t, not unsigned int, to count bytes. + * lib/abitset.h (abitset_bytes): Likewise. + * lib/bitset.c (bitset_bytes, bitset_alloc, bitset_obstack_alloc): + Likewise. + * lib/bitset.h (bitset_bytes): Likewise. + * lib/bitset_stats.c (bitset_stats_bytes, bitset_stats_init): Likewise. + * lib/bitset_stats.h (bitset_stats_bytes): Likewise. + * lib/bitsetv.c (bitsetv_alloc): Likewise. + * lib/ebitset.c (ebitset_bytes): Likewise. + * lib/ebitset.h (ebitset_bytes): Likewise. + * lib/lbitset.c (lbitset_bytes): Likewise. + * lib/lbitset.h (lbitset_bytes): Likewise. + + * lib/abitset.c (abitset_empty_p, abitset_not, abitset_equal_p, + abitset_subset_p, abitset_disjoint_p, abitset_and, + abitset_and_cmp, abitset_andn, abitset_andn_cmp, abitset_or, + abitset_or_cmp, abitset_xor, abitset_xor_cmp, abitset_and_or, + abitset_and_or_cmp, abitset_andn_or, abitset_andn_or_cmp, + abitset_or_and, abitset_or_and_cmp): + Use bitset_windex instead of unsigned int. + * lib/bitsetv.c (bitsetv_dump, debug_bitsetv): Likewise. + * lib/ebitset.c (struct ebitset_struct.size, ebitset_elts_grow, + ebitset_elt_add, ebitset_elt_remove, ebitset_weed, + ebitset_elt_find, ebitset_list_reverse, ebitset_list, ebitset_init): + Likewise. + * lib/lbitset.c (lbitset_ones, lbitset_not): Likewise. + + * lib/bitset.c (bitset_print): + Use proper printf formats for widths of integer types. + * lib/bitset_stats.c (bitset_percent_histogram_print, + bitset_log_histogram_print, bitset_stats_print_1): Likewise. + * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise. + * lib/bitsetv.c (bitsetv_dump, debug_bitsetv): Likewise. + * lib/lbitset.c (lbitset_bytes): Likewise. + + * lib/bbitset.h (BITSET_BINDEX_MAX, BITSET_WINDEX_MAX, + BITSET_SIZE_MAX): New macros. + (BITSET_INDEX_MAX): Remove. It wasn't right, since it assumed that + sizeof (bitset_word) == sizeof (bitset_windex). All uses changed + to BITSET_WINDEX_MAX. + + * lib/bitset.c (bitset_next, bitset_prev, bitset_first, + bitset_last): Return BITSET_BINDEX_MAX (not -1) for no value, + since we now return the bitset_bindex type (not int). + + * lib/bitsetv.c (bitsetv_alloc): Check for arithmetic overflow + when computing sizes. + * lib/ebitset.c (ebitset_elts_grow): Likewise. + + * lib/lbitset.c (lbitset_elt_find): Simplify windex calculation + and avoid cast to unsigned. + +2002-09-30 Akim Demaille + + * lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h, + * lib/bitset_stats.c, lib/bitsetv.c, lib/ebitset.c, lib/lbitset.c: + Updates from Michael Hayes. + +2002-09-30 Art Haas + + * configure.ac: Update AC_OUTPUT and AM_CONFIG_HEADER + invocations. + * tests/cxx-type.at (declarator): Don't rely on NDEBUG being not + defined. + +2002-09-27 Akim Demaille + + Version 1.49c. + +2002-09-27 Akim Demaille + + * configure.ac (AM_INIT_AUTOMAKE): We _need_ 1.7. + (Because of AC_LIBSOURCE). + +2002-09-27 Akim Demaille + + Playing with Autoscan. + + * configure.ac: Remove the old LIBOBJ tweaks. + (AC_REPLACE_FUNCS): Add strrchr and strtol. + * lib/strrchr.c: New. + * lib/strtol.c: New, from the Coreutils 4.5.1. + +2002-09-27 Akim Demaille + + Playing with Autoscan. + + * m4/prereq.m4 (jm_PREREQ_ARGMATCH, jm_FUNC_ARGMATCH): New. + * lib/Makefile.am (libbison_a_SOURCES): No longer include + argmatch.c and argmatch.h, since they are AC_LIBSOURCE'd. + * lib/strcasecmp.c, lib/strncasecmp.c, lib/memcmp.c: New, from the + Coreutils 4.5.1. + +2002-09-24 Akim Demaille + + * doc/bison.texinfo (Stack Overflow): xref to Recursion. + (Frequently Asked Questions, Parser Stack Overflow): New. + +2002-09-13 Akim Demaille + + Playing with autoscan. + + * src/reader.c (get_merge_function): Use xstrdup, not strdup. + * src/files.c (skeleton_find): Remove, unused. + * m4/memcmp.m4: New, from the Coreutils 4.5.1. + * m4/prereq.m4 (jm_PREREQ_QUOTEARG): Run jm_FUNC_MEMCMP. + +2002-09-13 Akim Demaille + + * configure.ac (AM_INIT_AUTOMAKE): Require Automake 1.6.3. + * Makefile.am (AUTOMAKE_OPTIONS): Don't. + +2002-09-13 Akim Demaille + + * configure.ac: Require 2.54. + s/jm_FUNC_MALLOC/AC_FUNC_MALLOC/. + s/jm_FUNC_REALLOC/AC_FUNC_REALLOC/. + * m4/c-bs-a.m4, m4/malloc.m4, m4/mbstate_t.m4, m4/realloc.m4: + Remove, provided by Autoconf macros. + +2002-09-12 Akim Demaille + + * m4/prereq.m4: Update, from Coreutils 4.5.1. + +2002-09-12 Akim Demaille + + * m4/prereq.m4: Update, from Fileutils 4.1.5. + * configure.ac (jm_PREREQ_TEMPNAME): Invoke it. + Reported by Martin Mokrejs. + +2002-09-10 Akim Demaille + + * src/parse-gram.y: Associate a human readable string to each + token type. + * tests/regression.at (Invalid inputs): Adjust. + +2002-09-10 Gary V. Vaughan + + * tests/Makefile.am ($(srcdir)/package.m4): Bison now ships + with an Autoconf-2.5x style configure.ac. + +2002-09-06 Paul Eggert + + * doc/bison.texinfo (Conditions): Make explicit that the GPL + exception applies only to yacc.c. This is a modification of a + patch originally suggested by Akim Demaille. + +2002-09-06 Akim Demaille + + * data/c.m4 (b4_copyright): Move the GPL exception comment from + here to... + * data/yacc.c: here. + + * data/lalr1.cc (struct yyltype): Don't define it, since we use + LocationType. + (b4_ltype): Default to yy::Location from location.hh. + +2002-09-04 Jim Meyering + + * data/yacc.c: Guard the declaration of yytoknum also with + `#ifdef YYPRINT', so it is declared only when used. + +2002-09-04 Akim Demaille + + * configure.in: Rename as... + * configure.ac: this. + Bump to 1.49c. + +2002-09-04 Akim Demaille + + * src/assoc.c, src/closure.c, src/gram.c, src/injections.c, + * src/lalr.c, src/LR0.c, src/relation.c, src/tables.c: Don't + translate maintainer only messages. + +2002-08-12 Paul Eggert + + Version 1.49b. + + * Makefile.am (SUBDIRS): Remove intl. + (DISTCLEANFILES): Remove. + * NEWS: Mention that GNU M4 is now required. Clarify what is + meant by "larger grammars". Mention the pt_BR translation. + * configure.in (AC_CHECK_DECLS): Add getenv, getopt. + (AM_GNU_GETTEXT_VERSION): New macro, replacing GETTEXT_VERSION var. + Bump version from 0.11.2 to 0.11.5. + (BISON_PREREQ_STAGE): Remove. + (AM_GNU_GETTEXT): Use external gettext. + (AC_OUTPUT): Remove intl/Makefile. + + * config/depcomp, config/install-sh: Sync with Automake 1.6.3. + + * data/glr.c: Include string.h, for strlen. + (yyreportParseError): Use size_t for yysize. + (yy_yypstack): No longer nested inside yypstates, as nested + functions are not portable. Do not assume size_t is the + same width as int. + (yypstates): Do not assume that ptrdiff_t is the same width + as int, and similarly for yyposn and YYINDEX. + + * data/yacc.c: Fix comment about `$$ = $1': it can copy garbage. + + * lib/Makefile.am (INCLUDES): Do not include from the intl + directory, which has been removed. + * src/Makefile.am (INCLUDES): Likewise. + + * lib/Makefile.am (libbison_a_SOURCES): Add unlocked-io.h. + (bitsets_sources, additional_bitsets_sources, timevars_sources): + New vars. + + * lib/Makefile.am (libbison_a_SOURCES): Avoid +=, a GNU make extension. + * tests/Makefile.am (EXTRA_DIST): Likewise. + + * lib/abitset.c (abitset_reverse_list, ebitset_reverse_list): + Do not assume that bitset_windex is the same width as unsigned. + + * lib/abitset.c (abitset_unused_clear): Do not assume that + bitset_word is the same width as int. + * lib/bbitset.h (BITSET_INDEX_MAX, BITSET_MSB): Likewise. + * lib/bitset.h (bitset_set, bitset_reset): Likewise. + * lib/bitset_stats.c (bitset_stats_set, bitset_stats_reset): Likewise. + * lib/ebitset.c (ebitset_set, ebitset_reset): Likewise. + * lib/lbitset.c (lbitset_set, lbitset_reset): Likewise. + + * lib/abitset.c (abitset_op1): Use -1, not ~0, as memset arg (for + portability to one's complement hosts!). + * lib/ebitset.c (ebitset_op1): Likewise. + * lib/lbitset.c (lbitset_op1): Likewise. + + * lib/argmatch.c, lib/quotearg.c, quotearg.h: Sync with GNU tar. + * lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h, + lib/hash.c, lib/hash.h, lib/strnlen.c, lib/xmalloc.c: + Sync with fileutils. + * lib/error.c, lib/getopt.c, lib/getopt.h, lib/getopt1.c, + lib/gettext.h: Sync with diffutils. + + * lib/memrchr.c, lib/mkstemp.c, lib/strchr.c, lib/strnlen.c, + lib/strspn.c, lib/tempname.c: Use GPL, not LGPL. + + * lib/obstack.c, lib/obstack.h: Sync with fileutils, except use + PROTOTYPES to check for prototypes, and "defined __STDC__" to + check for void *. + + * lib/bbitset.h (BITSET_WORD_BITS): Now of type unsigned, not + size_t; the old version tried to do this but casted improperly. + (bitset_bindex, bitset_windex): Now size_t, not unsigned long. + (bitset_test): Now returns int, not unsigned long. + + * lib/bitset_stats.c: Include "gettext.h". + (_): New macro. + (bitset_stats_set, bitset_stats_reset, bitset_stats_test): Don't + name locals "index", as it generates unnecessary warnings on some + hosts that have an "index" function. + + * lib/bitset_stats.c (bitset_stats_print_1, bitset_stats_print, + bitset_stats_read, bitset_stats_write): Wrap strings in _() if + they need translation. + * src/LR0.c (state_list_append, new_itemsets, get_state, + append_states, generate_states): Likewise. + * src/assoc.c (assoc_to_string): Likewise. + * src/closure.c (print_closure, set_firsts, closure): Likewise. + * src/gram.c (grammar_dump): Likewise. + * src/injections.c (injections_compute): Likewise. + * src/lalr.c (lookaheads_print): Likewise. + * src/relation.c (relation_transpose): Likewise. + * src/scan-gram.l: Likewise. + * src/tables.c (table_grow, pack_vector): Likewise. + + * m4/Makefile.am (EXTRA_DIST): Remove codeset.m4, + glibc21.m4, isc-posix.m4 lcmessage.m4, stage.m4. + * m4/malloc.m4, m4/realloc.m4: Sync with diffutils. + * m4/mbstate_t.m4: Sync with fileutils. + * m4/prereq.m4 (jm_PREREQ_QUOTEARG): AC_MBSTATE_T -> AC_TYPE_MBSTATE_T. + + * po/LINGUAS: Add pt_BR. + * po/POTFILES.in: Add src/assoc.c, src/closure.c, src/gram.c, + src/main.c, src/relation.c, src/state.c, lib/bitset_stats.c, + lib/timevar.c. + Use src/parse-gram.y instead of src/parse-gram.c, as the gettext + manual recommends. + Similarly, use src/scan-gram.l instead of src/scan-gram.c. + + * src/complain.c (strerror_r): Remove decl; not needed. + (strerror): Use same pattern as ../lib/error.c. + + * src/files.c, src/files.h (compute_header_macro): Remove; unused. + + * src/gram.c (grammar_dump): Do not assume ptrdiff_t fits in int. + + * src/main.c (main): Cast result of bindtextdomain and textdomain + to void, to avoid a GCC warning when --disable-nls is in effect. + + * src/scan-gram.l: Use strings rather than escapes when possible, + to minimize the number of warnings from xgettext. + (handle_action_dollar, handle_action_at): Don't use isdigit, + as it mishandles negative chars and it may not work as expected + outside the C locale. + + * src/symtab.c (symbol_get): Don't cast LHS of an assignment; + this is a GCC extension and is not portable to other compilers. + + * src/system.h (alloca): Use same pattern as ../lib/error.c. + Do not include ; no longer needed. + Do not include ; no longer needed (and generates + warnings on OpenBSD 3.0). + + * tests/cxx-type.at (yylex): Do not pass signed char to isupper; + it's not portable. + + * tests/regression.at: Do not use 'cc -c input.c -o input'; + Sun C rejects this. Instead, use 'cc -c input.c -o input.o'. + + * tests/synclines.at (AC_SYNCLINES_COMPILE): Accept any nonzero + exit status as failure, not just exit status 1. Sun C exits + with status 2 sometimes. + + * tests/torture.at (AT_INCREASE_DATA_SIZE): New macro. + Use it for the two large tests. + +2002-08-02 Akim Demaille + + * src/conflicts.c (conflicts_output): Don't output rules never + reduced here, since anyway that computation doesn't work. + * src/gram.h, src/gram.h (rule_filter_t, rule_useful_p) + (rule_useless_p, rule_never_reduced_p): New. + (grammar_rules_partial_print): Use a filter instead of a range. + Display the title only if needed. + (grammar_rules_print): Adjust. + (grammar_rules_never_reduced_report): New. + * src/tables.c (action_row): Move the computation of rules never + reduced to... + (token_actions): here. + * src/main.c (main): Make the parser before making the report, so + that rules never reduced are computed. + Call grammar_rules_never_reduced_report. + * src/print.c (print_results): Report rules never reduced. + * tests/conflicts.at, tests/reduce.at: Adjust. + +2002-08-01 Akim Demaille + + Instead of attaching lookaheads and duplicating the rules being + reduced by a state, attach the lookaheads to the reductions. + + * src/state.h (state_t): Remove the `lookaheads', + `lookaheads_rule' member. + (reductions_t): Add a `lookaheads' member. + Use a regular array for the `rules'. + * src/state.c (reductions_new): Initialize the lookaheads member + to 0. + (state_rule_lookaheads_print): Adjust. + * src/state.h, src/state.c (state_reductions_find): New. + * src/conflicts.c (resolve_sr_conflict, set_conflicts) + (count_rr_conflicts): Adjust. + * src/lalr.c (LArule): Remove. + (add_lookback_edge): Adjust. + (state_lookaheads_count): New. + (states_lookaheads_initialize): Merge into... + (initialize_LA): this. + (lalr_free): Adjust. + * src/main.c (main): Don't free nullable and derives too early: it + is used by --verbose. + * src/print.c, src/print_graph.c, src/tables.c: Adjust. + +2002-08-01 Akim Demaille + + * src/derives.h, src/derives.c (derives): A `rule_t***' instead of + `rule_number_t**'. + (set_derives, free_derives): Rename as... + (derives_compute, derives_free): this. + Adjust all dependencies. + * src/nullable.c (set_nullable, free_nullable): Rename as... + (nullable_compute, nullable_free): these. + (rule_list_t): Store rule_t *, not rule_number_t. + * src/state.c (state_rule_lookaheads_print): Directly compare rule + pointers, instead of their numbers. + * src/main.c (main): Call nullable_free, and derives_free earlier, + as they were lo longer used. + +2002-08-01 Akim Demaille + + * lib/timevar.c (get_time): Include children time. + * src/lalr.h (LA, LArule): Don't export them: used with the + state_t. + * src/lalr.c (LA, LArule): Static. + * src/lalr.h, src/lalr.c (lalr_free): New. + * src/main.c (main): Call it. + * src/tables.c (pack_vector): Check whether loc is >= to the + table_size, not >. + (pack_tables): Don't free froms, tos, conflict_tos, and pos... + (tables_generate): do it, since that's also it which allocates + them. + Don't free LA and LArule, main does. + +2002-07-31 Akim Demaille + + Separate parser tables computation and output. + + * src/output.c (nvectors, base_t, base, base_ninf, conflict_table) + (conflict_list, conflict_list_cnt, table, check, table_ninf) + (yydefgoto, yydefact, high): Move to... + * src/tables.h, src/tables.c: here. + * src/output.c (vector_number_t, VECTOR_NUMBER_MAX) + (VECTOR_NUMBER_MIN, state_number_to_vector_number) + (symbol_number_to_vector_number, nvectors, BASE_MAX, BASE_MIN) + (froms, tos, conflict_tos, tally, width, action_t, ACTION_MAX) + (ACTION_MIN, actrow, order, nentries, pos, conflrow) + (conflict_list_free, table_size, lowzero, table_grow, conflict_row) + (action_row, save_row, token_actions, save_column, default_goto) + (goto_actions, sort_actions, matching_state, pack_vector) + (table_ninf_remap, pack_table, prepare_actions): Move to... + * src/tables.c: here. + * src/tables.h, src/tables.c(tables_generate, tables_free): New. + * src/output.c (token_actions, output_base, output_conflicts) + (output_check): Merge into... + (prepare_actions): this. + (actions_output): Rename as... + (user_actions_output): this. + * src/main.c (main): Call tables_generate and tables_free. + +2002-07-31 Akim Demaille + + Steal GCC's --time-report support. + + * lib/timevar.c, lib/timevar.h, lib/timevar.def: New, + stolen/adjusted from GCC. + * m4/stage.m4: Remove time related checks. + * m4/timevar.m4: New. + * configure.in: Adjust. + * src/system.h: Adjust to using timevar.h. + * src/getargs.h, src/getargs.c: Support trace_time for + --trace=time. + * src/main.c (stage): Remove. + (main): Replace `stage' invocations with timevar calls. + * src/output.c: Insert pertinent timevar calls. + +2002-07-31 Akim Demaille + + Let --trace have arguments. + + * src/getargs.h (enum trace_e): New. + * src/getargs.c (trace_args, trace_types, trace_argmatch): New. + (long_options, short_options): --trace/-T takes an optional + argument. + Change all the uses of trace_flag to reflect the new flags. + * tests/sets.at (Firsts, Nullable, Broken Closure): Use --trace=sets. + + Strengthen `stage' portability. + + * m4/stage.m4 (BISON_PREREQ_STAGE): New. + * configure.in: Use it. + Don't check for malloc.h and sys/times.h. + * src/system.h: Include them when appropriate. + * src/main.c (stage): Compile only when mallinfo, struct mallinfo, + times and struct tms are available. + +2002-07-30 Akim Demaille + + In verbose parse error message, don't report `error' as an + expected token. + * tests/actions.at (Printers and Destructors): Adjust. + * tests/calc.at (Calculator $1): Adjust. + * data/yacc.c, data/glr.c, data/lalr1.c: When making the verbose + error message, do not report the parser accepts the error token in + that state. + +2002-07-30 Akim Demaille + + Normalize conflict related messages. + + * src/complain.h, src/complain.c (warn, complain): New. + * src/conflicts.c (conflicts_print): Use them. + (conflict_report_yacc): New, extracted from... + (conflicts_print): here. + * tests/conflicts.at, tests/existing.at: Adjust. + +2002-07-30 Akim Demaille + + Report rules which are never reduced by the parser: those hidden + by conflicts. + + * src/LR0.c (save_reductions): Don't make the final state too + different: save its reduction (accept) instead of having a state + without any action (no shift or goto, no reduce). + Note: the final state is now a ``regular'' state, i.e., the + parsers now contain `reduce 0' as default reduction. + Nevertheless, since they decide to `accept' when yystate = + final_state, they still will not reduce rule 0. + * src/print.c (print_actions, print_reduction): Adjust. + * src/output.c (action_row): Track reduced rules. + (token_actions): Report rules never reduced. + * tests/conflicts.at, tests/regression.at: Adjust. + +2002-07-30 Akim Demaille + + `stage' was accidently included in a previous patch. + Initiate its autoconfiscation. + + * configure.in: Look for malloc.h and sys/times.h. + * src/main.c (stage): Adjust. + Report only when trace_flag. + +2002-07-29 Akim Demaille + + * src/state.h, src/state.c (transitions_t): Holds state_t*'s, not + state_number_t. + (errs_t): symbol_t*, not symbol_number_t. + (reductions_t): rule_t*, not rule_number_t. + (FOR_EACH_SHIFT): New. + * src/LR0.c, src/conflicts.c, src/lalr.c, src/output.c + * src/print.c, src/print_graph.c: Adjust. + +2002-07-29 Akim Demaille + + Use $accept and $end, as BYacc and BTYacc do, instead of $axiom and $. + + * src/symtab.h, src/symtab.c (eoftoken, axiom): Rename as... + (endtoken, accept): these. + * src/reader.c (reader): Set endtoken's default tag to "$end". + Set undeftoken's tag to "$undefined" instead of "$undefined.". + * doc/bison.texinfo (Table of Symbols): Mention $accept and $end. + Adjust. + +2002-07-29 Akim Demaille + + * src/reduce.c (reduce_grammar): When the language is empty, + complain about the start symbol, not the axiom. + Use its location. + * tests/reduce.at (Empty Language): New. + +2002-07-26 Akim Demaille + + * src/reader.h, src/reader.c (gram_error): ... can't get + yycontrol without making too strong assumptions on the parser + itself. + * src/output.c (prepare_tokens): Use the real 0th value of + token_translations instead of `0'. + * src/parse-gram.y (yyerror): Don't rely on yycontrol being + visible here. + * data/yacc.c (yyreport_parse_error): Rename yylocation as yylloc + for the time being: %locations ought to provide it to yyerror. + +2002-07-25 Akim Demaille + + * src/output.c (prepare_tokens): Go up to ntokens, not ntokens + 1. + * doc/bison.texinfo (Decl Summary): s/$illegal/$undefined./. + * tests/regression.at (Web2c Actions): Adjust. + +2002-07-25 Akim Demaille + + Stop storing rules from 1 to nrules + 1. + + * src/LR0.c, src/closure.c, src/derives.c, src/gram.c, src/lalr.c + * src/nullable.c, src/output.c, src/print.c, src/reader.c + * src/reduce.c: Allocate and free from &rules[0], not &rules[1]. + Iterate from 0 to nrules. + Use rule_number_as_item_number and item_number_as_rule_number. + Adjust to `derive' now containing possibly 0. + * src/gram.h (rule_number_as_item_number, item_number_as_rule_number): + Handle the `- 1' part in rule numbers from/to item numbers. + * src/conflicts.c (log_resolution): Fix the message which reversed + shift and reduce. + * src/output.c (action_row): Initialize default_rule to -1. + (token_actions): Adjust. + * tests/sets.at (Nullable, Firsts): Fix the previously bogus + expected output. + * tests/conflicts.at (Resolved SR Conflicts): Likewise. + +2002-07-25 Akim Demaille + + * data/c.m4 (b4_c_function, b4_c_ansi_args, b4_c_ansi_arg) + (b4_c_knr_arg_names, b4_c_knr_arg_name, b4_c_knr_arg_decls) + (b4_c_knr_arg_decl): New. + * data/yacc.c: Use it to define yysymprint, yydestruct, and + yyreport_parse_error. + +2002-07-25 Akim Demaille + + * data/yacc.c (yyreport_parse_error): New, extracted from... + (yyparse): here. + (yydestruct, yysymprint): Move above yyparse. + Be K&R compliant. + +2002-07-25 Akim Demaille + + * data/c.m4 (b4_ints_in, b4_int_type, b4_int_type_for): New, + replace... + (b4_sint_type, b4_uint_type): these. + * data/yacc.c, data/glr.c, data/lalr1.cc: Use b4_int_type_for. + * tests/regression.at (Web2c Actions): Adjust. + +2002-07-25 Akim Demaille + + * src/gram.h (TIEM_NUMBER_MAX): New. + (item_number_of_rule_number, rule_number_of_item_number): Rename + as... + (rule_number_as_item_number, item_number_as_rule_number): these. + Adjust dependencies. + * src/output.c (vector_number_t, VECTOR_NUMBER_MAX) + (VECTOR_NUMBER_MIN, state_number_to_vector_number) + (symbol_number_to_vector_number): New. + (order): Of vector_number_t* type. + (base_t, BASE_MAX, BASE_MIN): New. + (froms, tos, width, pos, check): Of base_t type. + (action_number_t, ACTION_MIN, ACTION_MAX): New. + (actrow): Of action_number_t type. + (conflrow): Of unsigned int type. + (table_ninf, base_ninf): New. + (GENERATE_MUSCLE_INSERT_TABLE): Also output the `*_min' value. + (muscle_insert_int_table, muscle_insert_base_table) + (muscle_insert_rule_number_table): New. + (prepare_tokens): Output `toknum' as int_table. + (action_row): Returns a rule_number_t. + Use ACTION_MIN, not SHRT_MIN. + (token_actions): yydefact is rule_number_t*. + (table_ninf_remap): New. + (pack_table): Use it for `base' and `table'. + * data/yacc.c, data/glr.c, data/lalr1.cc (YYFLAG): Remove, + replaced with... + (YYPACT_NINF, YYTABLE_NINF): these. + (yypact, yytable): Compute their types instead of hard-coded + `short'. + * tests/regression.at (Web2c Actions): Adjust. + +2002-07-19 Akim Demaille + + * src/scan-gram.l (id): Can start with an underscore. + +2002-07-16 Akim Demaille + + * src/assoc.c, src/asssoc.h (assoc_t, assoc_to_string): New. + Adjust all former `associativity' dependencies. + * src/symtab.c (symbol_new): Default associativity is `undef', not + `right'. + (symbol_check_alias_consistence): Adjust. + +2002-07-09 Akim Demaille + + * doc/bison.texinfo: Properly set the ``header'' part. + Use @dircategory ``GNU programming tools'' as per Texinfo's + documentation. + Use @copying. + +2002-07-09 Akim Demaille + + * lib/quotearg.h: Protect against multiple inclusions. + * src/location.h (location_t): Add a `file' member. + (LOCATION_RESET, LOCATION_PRINT): Adjust. + * src/complain.c (warn_at, complain_at, fatal_at): Drop + `error_one_per_line' support. + +2002-07-09 Akim Demaille + + * src/complain.h, src/complain.c (warn, complain): Remove, unused. + * src/reader.c (lineno): Remove. + Adjust all dependencies. + (get_merge_function): Take a location and use complain_at. + * src/symtab.h, src/symtab.c (symbol_make_alias): Likewise. + * tests/regression.at (Invalid inputs, Mixing %token styles): + Adjust. + +2002-07-09 Akim Demaille + + * src/parse-gram.y (rules_or_grammar_declaration): Add an error + recovery rule, and forbid extensions when --yacc. + (gram_error): Use complain_at. + * src/reader.c (reader): Exit if there were parse errors. + +2002-07-09 Akim Demaille + + * tests/synclines.at (AT_SYNCLINES_COMPILE): New. + (AT_TEST_SYNCLINE): Adjust to unusual GCC outputs. + Reported by R Blake . + +2002-07-09 Akim Demaille + + * data/yacc.c: Output the copyright notive in the header. + +2002-07-03 Akim Demaille + + * src/output.c (froms, tos): Are state_number_t. + (save_column): sp, sp1, and sp2 are state_number_t. + (prepare): Rename `final' as `final_state_number', `nnts' as + `nterms_number', `nrules' as `rules_number', `nstates' as + `states_number', and `ntokens' as `tokens_number'. Remove `nsym', + unused. + * data/yacc.c, data/glr.c, data/lalr1.cc: Adjust. + * data/lalr1.cc (nsym_): Remove, unused. + +2002-07-03 Akim Demaille + + * src/lalr.h, src/lalr.c (goto_number_t): New. + * src/lalr.c (goto_list_t): New. + Propagate them. + * src/nullable.c (rule_list_t): New. + Propagate. + * src/types.h: Remove. + +2002-07-03 Akim Demaille + + * src/closure.c (print_fderives): Use rule_rhs_print. + * src/derives.c (print_derives): Use rule_rhs_print. + (rule_list_t): New, replaces `shorts'. + (set_derives): Add comments. + * tests/sets.at (Nullable, Firsts): Adjust. + +2002-07-03 Akim Demaille + + * src/output.c (prepare_actions): Free `tally' and `width'. + (prepare_actions): Allocate and free `order'. + * src/symtab.c (symbols_free): Free `symbols'. + * src/scan-gram.l (scanner_free): Clear Flex's scanners memory. + * src/output.c (m4_invoke): Move to... + * src/scan-skel.l: here. + (<>): Close yyout, and free its name. + +2002-07-03 Akim Demaille + + Fix some memory leaks, and fix a bug: state 0 was examined twice. + + * src/LR0.c (new_state): Merge into... + (state_list_append): this. + (new_states): Merge into... + (generate_states): here. + (set_states): Don't ensure a proper `errs' state member here, do it... + * src/conflicts.c (conflicts_solve): here. + * src/state.h, src/state.c: Comment changes. + (state_t): Rename member `shifts' as `transitions'. + Adjust all dependencies. + (errs_new): For consistency, also take the values as argument. + (errs_dup): Remove. + (state_errs_set): New. + (state_reductions_set, state_transitions_set): Assert that no + previous value was assigned. + (state_free): New. + (states_free): Use it. + * src/conflicts.c (resolve_sr_conflict): Don't use an `errs_t' as + temporary storage: use `errs' and `nerrs' as elsewhere. + (set_conflicts): Allocate and free this `errs'. + +2002-07-02 Akim Demaille + + * lib/libiberty.h: New. + * lib: Update the bitset implementation from upstream. + * src/closure.c, src/lalr.c, src/output.c, src/print_graph.c, + * src/state.c: Use BITSET_FOR_EACH, not BITSET_EXECUTE. + * src/main.c: Adjust bitset stats calls. + +2002-07-01 Paul Eggert + + * src/scan-gram.l (): Convert to unsigned + char, so that negative chars don't collide with $. + +2002-06-30 Akim Demaille + + Have the GLR tests be `warning' checked, and fix the warnings. + + * data/glr.c (YYFPRINTF): Always define it, not only when YYDEBUG + (yyuserAction, yyreportAmbiguity): `Use' all the arguments. + (yyremoveDeletes): `yyi' and `yyj' are size_t. + Use YYFPRINTF when under if (YYDEBUG) to avoid empty `if' bodies. + (yyaddDeferredAction): static. + (yyglrReduce): yyi, yyk, amd yyposn are size_t. + (yyreportParseError): yyprefix is const. + yytokenp is used only when verbose. + (yy__GNUC__): Replace with __GNUC__. + (yypdumpstack): yyi is size_t. + (yypreference): Un-yy local variables and arguments, to avoid + clashes with `yyr1'. Anyway, we are not in the user name space. + (yytname_size): be an int, as is compared with ints. + * tests/testsuite.at (AT_COMPILE, AT_PARSER_CHECK): New. + Use them. + * tests/cxx-gram.at: Use quotation to protect $1. + Use AT_COMPILE to enable warnings hunts. + Prototype yylex and yyerror. + `Use' argc. + Include `string.h', not `strings.h'. + Produce and prototype stmtMerge only when used. + yylex takes a location. + +2002-06-30 Akim Demaille + + We spend a lot of time in quotearg, in particular when --verbose. + + * src/symtab.c (symbol_get): Store a quoted version of the key. + (symbol_tag_get, symbol_tag_get_n, symbol_tag_print): Remove. + Adjust all callers. + +2002-06-30 Akim Demaille + + * src/state.h (reductions_t): Rename member `nreds' as num. + (errs_t): Rename members `nerrs' and `errs' as `num' and `symbols'. + * src/state.c (ERRS_ALLOC, REDUCTIONS_ALLOC): Use the correct types. + +2002-06-30 Akim Demaille + + * src/state.h, src/state.c (shift_t, SHIFT_SYMBOL, SHIFT_IS_SHIFT) + (SHIFT_IS_GOTO, SHIFT_IS_ERROR, SHIFT_DISABLE, SHIFT_IS_DISABLED) + (shifts_to): Rename as... + (transition_t, TRANSITION_SYMBOL, TRANSITION_IS_TRANSITION) + (TRANSITION_IS_GOTO, TRANSITION_IS_ERROR, TRANSITION_DISABLE) + (TRANSITION_IS_DISABLED, transitions_to): these. + +2002-06-30 Akim Demaille + + * src/print.c (print_shifts, print_gotos): Merge into... + (print_transitions): this. + (print_transitions, print_errs, print_reductions): Align the + lookaheads columns. + (print_core, print_transitions, print_errs, print_state, + print_grammar): Output empty lines separator before, not after. + (state_default_rule_compute): Rename as... + (state_default_rule): this. + * tests/conflicts.at (Defaulted Conflicted Reduction), + (Unresolved SR Conflicts, Resolved SR Conflicts): Adjust. + * tests/regression.at (Rule Line Numbers, Web2c Report): Adjust. + +2002-06-30 Akim Demaille + + Display items as we display rules. + + * src/gram.h, src/gram.c (rule_lhs_print): New. + * src/gram.c (grammar_rules_partial_print): Use it. + * src/print.c (print_core): Likewise. + * tests/conflicts.at (Defaulted Conflicted Reduction), + (Unresolved SR Conflicts): Adjust. + (Unresolved SR Conflicts): Adjust and rename as... + (Resolved SR Conflicts): this, as was meant. + * tests/regression.at (Web2c Report): Adjust. + +2002-06-30 Akim Demaille + + * src/print.c (state_default_rule_compute): New, extracted from... + (print_reductions): here. + Pessimize, but clarify the code. + * tests/conflicts.at (Defaulted Conflicted Reduction): New. + +2002-06-30 Akim Demaille + + * src/output.c (action_row): Let default_rule be always a rule + number. + +2002-06-30 Akim Demaille + + * src/closure.c (print_firsts, print_fderives, closure): + Use BITSET_EXECUTE. + * src/lalr.c (lookaheads_print): Likewise. + * src/state.c (state_rule_lookaheads_print): Likewise. + * src/print_graph.c (print_core): Likewise. + * src/print.c (print_reductions): Likewise. + * src/output.c (action_row): Likewise. + Use SHIFT_IS_DISABLED, SHIFT_IS_SHIFT and SHIFT_SYMBOL. + +2002-06-30 Akim Demaille + + * src/print_graph.c: Use report_flag. + +2002-06-30 Akim Demaille + + * src/lalr.c (traverse, digraph, matrix_print, transpose): Move + to... + * src/relation.h, src/relation.c (traverse, relation_digraph) + (relation_print, relation_transpose): New. + +2002-06-30 Akim Demaille + + * src/state.h, src/state.c (shifts_to): New. + * src/lalr.c (build_relations): Use it. + +2002-06-30 Akim Demaille + + * src/gram.h (rule_number_t, RULE_NUMBER_MAX, int_of_rule_number) + (item_number_of_rule_number, rule_number_of_item_number): New. + * src/LR0.c, src/closure.c, src/derives.c, src/derives.h, + * src/gram.c, src/lalr.c, src/nullable.c, src/output.c, src/print.c, + * src/print_graph.c, src/reader.c, src/reduce.c, src/reduce.h: + Propagate their use. + Much remains to be done, in particular wrt `shorts' from types.h. + +2002-06-30 Akim Demaille + + * src/symtab.c (symbol_new): Initialize the `printer' member. + +2002-06-30 Akim Demaille + + * src/LR0.c (save_reductions): Remove, replaced by... + * src/state.h, src/state.c (state_reductions_set): New. + (reductions, errs): Rename as... + (reductions_t, errs_t): these. + Adjust all dependencies. + +2002-06-30 Akim Demaille + + * src/LR0.c (state_list_t, state_list_append): New. + (first_state, last_state): Now symbol_list_t. + (this_state): Remove. + (new_itemsets, append_states, save_reductions): Take a state_t as + argument. + (set_states, generate_states): Adjust. + (save_shifts): Remove, replaced by... + * src/state.h, src/state.c (state_shifts_set): New. + (shifts): Rename as... + (shifts_t): this. + Adjust all dependencies. + * src/state.h (state_t): Remove the `next' member. + +2002-06-30 Akim Demaille + + * src/vcg.c (quote): Use slot 2, since we often pass symbol tag + escaped in slot 0. + +2002-06-30 Akim Demaille + + Use hash.h for the state hash table. + + * src/LR0.c (STATE_HASH_SIZE, state_hash): Remove. + (allocate_storage): Use state_hash_new. + (free_storage): Use state_hash_free. + (new_state, get_state): Adjust. + * src/lalr.h, src/lalr.c (states): Move to... + * src/states.h (state_t): Remove the `link' member, no longer + used. + * src/states.h, src/states.c: here. + (state_hash_new, state_hash_free, state_hash_lookup) + (state_hash_insert, states_free): New. + * src/states.c (state_table, state_compare, state_hash): New. + * src/output.c (output_actions): Do not free states now, since we + still need to know the final_state number in `prepare', called + afterwards. Do it... + * src/main.c (main): here: call states_free after `output'. + +2002-06-30 Akim Demaille + + * src/state.h, src/state.c (state_new): New, extracted from... + * src/LR0.c (new_state): here. + * src/state.h (STATE_ALLOC): Move to... + * src/state.c: here. + * src/LR0.h, src/LR0.c (nstates, final_state): Move to... + * src/state.h, src/state.c: here. + +2002-06-30 Akim Demaille + + * src/reader.c (gensym): Rename as... + * src/symtab.h, src/symtab.c (dummy_symbol_get): this. + (getsym): Rename as... + (symbol_get): this. + +2002-06-30 Akim Demaille + + * src/state.h (state_number_t, STATE_NUMBER_MAX): New. + * src/LR0.c, src/LR0.h, src/conflicts.c, src/lalr.c, src/lalr.h, + * src/output.c, src/print.c, src/print_graph.c: Propagate. + * src/LR0.h, src/LR0.h (final_state): Is a state_t*. + +2002-06-30 Akim Demaille + + Make the test suite pass with warnings checked. + + * tests/actions.at (Printers and Destructors): Improve. + Avoid unsigned vs. signed issues. + * tests/calc.at: Don't exercise the scanner here, do it... + * tests/input.at (Torturing the Scanner): here. + +2002-06-28 Paul Hilfinger + + * data/glr.c: Correct typo in Emacs-mode directive. Slightly + reorganize first lines parallel to yacc.c. + +2002-06-28 Akim Demaille + + * data/c.m4 (b4_copyright, b4_sint_type, b4_uint_type, b4_token_define) + (b4_token_enum, b4_token_defines): New, factored from... + * data/lalr1.cc, data/yacc.c, glr.c: here. + +2002-06-28 Akim Demaille + + * data/yacc.c (yydestruct, yysymprint): Pacify GCC warnings for + unused variables. + * src/output.c (merger_output): static. + +2002-06-28 Akim Demaille + + * src/reader.h: s/grammer_current_rule_merge_set/grammar_.../. + * src/conflicts.c (conflicts_total_count): `i' is unsigned, to + pacify GCC. + * src/output.c (save_row): Initialize all the variables to pacify GCC. + +2002-06-27 Paul Hilfinger + + Accumulated changelog for new GLR parsing features. + + * src/conflicts.c (count_total_conflicts): Change name to + conflicts_total_count. + * src/conflicts.h: Ditto. + * src/output.c (token_actions): Use the new name. + (output_conflicts): Change conflp => conflict_list_heads, and + confl => conflict_list for better readability. + * data/glr.c: Use the new names. + * NEWS: Add self to GLR announcement. + + * src/reader.c (free_merger_functions): Cleanup: XFREE->free. + + * doc/bison.texinfo (GLR Parsers): Make corrections suggested by + Akim Demaille. + + * data/bison.glr: Change name to glr.c + * data/glr.c: Renamed from bison.glr. + * data/Makefile.am: Add glr.c + + * src/getargs.c: + + * src/symlist.h: Add dprec and merger fields to symbol_list_s. + * src/symlist.c (symbol_list_new): Initialize dprec and merger fields. + + Originally 2002-06-16 Paul Hilfinger + + * data/bison.glr: Be sure to restore the + current #line when returning to the skeleton contents after having + exposed the input file's #line. + + Originally 2002-06-13 Paul Hilfinger + + * data/bison.glr: Bring up to date with changes to bison.simple. + + Originally 2002-06-03 Paul Hilfinger + + * data/bison.glr: Correct definitions that use b4_prefix. + Various reformatting. + (GLRStack): Make yychar (in YYPURE case) and yytokenp as part of stack. + (yyreportParseError, yyrecoverParseError, yyprocessOneStack): remove + yytokenp argument; now part of stack. + (yychar): Define to behave as documented. + (yyclearin): Ditto. + + Originally 2002-05-14 Paul Hilfinger + + * src/reader.h: Add declaration for free_merger_functions. + + * src/reader.c (merge_functions): New variable. + (get_merge_function): New function. + (free_merger_functions): New function. + (readgram): Check for %prec that is not followed by a symbol. + Handle %dprec and %merge declarations. + (packgram): Initialize dprec and merger fields in rules array. + + * src/output.c (conflict_tos, conflrow, conflict_table, conflict_list, + conflict_list_cnt, conflict_list_free): New variables. + (table_grow): Also grow conflict_table. + (prepare_rules): Output dprec and merger tables. + (conflict_row): New function. + (action_row): Output conflict lists for GLR parser. Don't use + default reduction in conflicted states for GLR parser so that there + are spaces for the conflict lists. + (save_row): Also save conflict information. + (token_actions): Allocate conflict list. + (merger_output): New function. + (pack_vector): Pack conflict table, too. + (output_conflicts): New function to output yyconflp and yyconfl. + (output_check): Allocate conflict_tos. + (output_actions): Output conflict tables, also. + (output_skeleton): Output b4_mergers definition. + (prepare): Output b4_max_rhs_length definition. + Use 'bison.glr' as default skeleton for GLR parsers. + + * src/gram.c (glr_parser): New flag. + (grammar_free): Call free_merger_functions. + + * src/conflicts.c (count_rr_conflicts): Augment to optionally count + all pairs of conflicting reductions, rather than just all tokens + causing conflicts. Needed to size conflict tables. + (conflicts_output): Modify call to count_rr_conflicts for new + interface. + (conflicts_print): Ditto. + (count_total_conflicts): New function. + + * src/reader.h (merger_list): New type. + (merge_functions): New variable. + + * src/lex.h (tok_dprec, tok_merge): New token types. + + * src/gram.h (rule_s): Add dprec and merger fields. + (glr_parser): New flag. + + * src/conflicts.h (count_total_conflicts): New function. + + * src/options.c (option_table): Add %dprec, %merge, and %glr-parser. + + * doc/bison.texinfo (Generalized LR Parsing): New section. + (GLR Parsers): New section. + (Language and Grammar): Mention GLR parsing. + (Table of Symbols): Add %dprec, %glr-parser, %merge, GLR + Correct typo ("tge" -> "the"). + + * data/bison.glr: New skeleton for GLR parsing. + + * tests/cxx-gram.at: New tests for GLR parsing. + + * tests/testsuite.at: Include cxx-gram.at. + + * tests/Makefile.am: Add cxx-gram.at. + + * src/parse-gram.y: + + * src/scan-gram.l: Add %dprec, %glr-parser, %merge. + + * src/parse-gram.y: Grammar for %dprec, %merge, %glr-parser. + +2002-06-27 Akim Demaille + + * src/options.h, src/options.c: Remove. + * src/getargs.c (short_options, long_options): New. + +2002-06-27 Akim Demaille + + * data/bison.simple, data/bison.c++: Rename as... + * data/yacc.c, data/lalr1.cc: these. + * doc/bison.texinfo (Environment Variables): Remove. + +2002-06-25 Raja R Harinath + + * src/getargs.c (report_argmatch): Initialize strtok(). + +2002-06-20 Akim Demaille + + * data/bison.simple (b4_symbol_actions): New, replaces... + (b4_symbol_destructor, b4_symbol_printer): these. + (yysymprint): Be sure to call YYPRINT only for tokens, and using + user token numbers. + +2002-06-20 Akim Demaille + + * data/bison.simple (yydestructor): Rename as... + (yydestruct): this. + +2002-06-20 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_type_set) + (symbol_destructor_set, symbol_precedence_set): The location is + the last argument. + Adjust all callers. + +2002-06-20 Akim Demaille + + * src/parse-gram.y (YYPRINT, yyprint): Don't mess with the parser + internals. + * src/reader.h, src/reader.c (grammar_current_rule_prec_set): + Takes a location. + * src/symtab.h, src/symtab.c (symbol_class_set) + (symbol_user_token_number_set): Likewise. + Adjust all callers. + Promote complain_at. + * tests/input.at (Type Clashes): Adjust. + +2002-06-20 Akim Demaille + + * data/bison.simple (YYLEX): Fix the declaration when + %pure-parser. + +2002-06-20 Akim Demaille + + * data/bison.simple (yysymprint): Don't print the token number, + just its name. + * tests/actions.at (Destructors): Rename as... + (Printers and Destructors): this. + Also exercise %printer. + +2002-06-20 Akim Demaille + + * data/bison.simple (YYDSYMPRINT): New. + Use it to remove many of the #if YYDEBUG/if (yydebug). + +2002-06-20 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_t): printer and + printer_location are new members. + (symbol_printer_set): New. + * src/parse-gram.y (PERCENT_PRINTER): New token. + Handle its associated rule. + * src/scan-gram.l: Adjust. + (handle_destructor_at, handle_destructor_dollar): Rename as... + (handle_symbol_code_at, handle_symbol_code_dollar): these. + * src/output.c (symbol_printers_output): New. + (output_skeleton): Call it. + * data/bison.simple (yysymprint): New. Cannot be named yyprint + since there are already many grammar files with a user `yyprint'. + Replace the calls to YYPRINT to calls to yysymprint. + * tests/calc.at: Adjust. + * tests/torture.at (AT_DATA_STACK_TORTURE): Remove YYPRINT: it was + taking advantage of parser very internal details (stack size!). + +2002-06-20 Akim Demaille + + * src/scan-gram.l: Complete the scanner with the missing patterns + to pacify Flex. + Use `quote' and `symbol_tag_get' where appropriate. + +2002-06-19 Akim Demaille + + * tests/actions.at (Destructors): Augment to test locations. + * data/bison.simple (yydestructor): Pass it the current location + if locations are enabled. + Prototype only when __STDC__ or C++. + Change the argument names to move into the yy name space: there is + user code here. + +2002-06-19 Akim Demaille + + * data/bison.simple (b4_pure_if): New. + Use it instead of #ifdef YYPURE. + +2002-06-19 Akim Demaille + + * data/bison.simple (b4_location_if): New. + Use it instead of #ifdef YYLSP_NEEDED. + +2002-06-19 Akim Demaille + + Prepare @$ in %destructor, but currently don't bind it in the + skeleton, as %location use is not cleaned up yet. + + * src/scan-gram.l (handle_dollar, handle_destructor_at) + (handle_action_at): New. + (handle_at, handle_action_dollar, handle_destructor_dollar): Take + a braced_code_t and a location as additional arguments. + (handle_destructor_dollar): Instead of requiring `b4_eval', just + unquote one when outputting `b4_dollar_dollar'. + Adjust callers. + * data/bison.simple (b4_eval): Remove. + (b4_symbol_destructor): Adjust. + * tests/input.at (Invalid @n): Adjust. + +2002-06-19 Zack Weinberg + + * doc/bison.texinfo: Document ability to have multiple + prologue sections. + +2002-06-18 Akim Demaille + + * src/files.c (compute_base_names): When computing the output file + names from the input file name, strip the directory part. + +2002-06-18 Akim Demaille + + * data/bison.simple.new: Comment changes. + Reported by Andreas Schwab. + +2002-06-18 Matt Kraai + + * data/bison.simple (yyoverflowlab): #ifndef yyoverflow, so that + there are no `label `yyoverflowlab' defined but not used' warnings + when yyoverflow is defined. + +2002-06-18 Akim Demaille + + * src/symtab.h, src/symtab.c (symbol_t): destructor_location is a + new member. + (symbol_destructor_set): Adjust. + * src/output.c (symbol_destructors_output): Output the destructor + locations. + Output the symbol name. + * data/bison.simple (b4_symbol_destructor): Adjust. + +2002-06-18 Cris Bailiff + and Akim Demaille + + * data/bison.simple.new (yyerrlab1): Be sure to pop and destroy + what's left on the stack when the error recovery hits EOF. + * tests/actions.at (Destructors): Complete to exercise this case. + +2002-06-17 Akim Demaille + + * data/m4sugar/m4sugar.m4 (m4_map): Recognize when the list of + arguments is really empty, not only equal to `[]'. + * src/symtab.h, src/symtab.c (symbol_t): `destructor' is a new + member. + (symbol_destructor_set): New. + * src/output.c (symbol_destructors_output): New. + * src/reader.h (brace_code_t, current_braced_code): New. + * src/scan-gram.l (BRACED_CODE): Use it to branch on... + (handle_dollar): Rename as... + (handle_action_dollar): this. + (handle_destructor_dollar): New. + * src/parse-gram.y (PERCENT_DESTRUCTOR): New. + (grammar_declaration): Use it. + * data/bison.simple (yystos): Is always defined. + (yydestructor): New. + * tests/actions.at (Destructors): New. + * tests/calc.at (_AT_CHECK_CALC_ERROR): Don't rely on egrep. + +2002-06-17 Akim Demaille + + * src/symlist.h, src/symlist.c (symbol_list_length): New. + * src/scan-gram.l (handle_dollar, handle_at): Compute the + rule_length only when needed. + * src/output.c (actions_output, token_definitions_output): Output + the full M4 block. + * src/symtab.c: Don't access directly to the symbol tag, use + symbol_tag_get. + * src/parse-gram.y: Use symbol_list_free. + +2002-06-17 Akim Demaille + + * src/reader.h, src/reader.c (symbol_list, symbol_list_new) + (symbol_list_prepend, get_type_name): Move to... + * src/symlist.h, src/symlist.c (symbol_list_t, symbol_list_new) + (symbol_list_prepend, symbol_list_n_type_name_get): here. + Adjust all callers. + (symbol_list_free): New. + * src/scan-gram.l (handle_dollar): Takes a location. + * tests/input.at (Invalid $n): Adjust. + +2002-06-17 Akim Demaille + + * src/reader.h, src/reader.c (symbol_list_new): Export it. + (symbol_list_prepend): New. + * src/parse-gram.y (%union): `list' is a new member. + (symbols.1): New, replaces... + (terms_to_prec.1, nterms_to_type.1): these. + * src/symtab.h, src/symtab.c (symbol_type_set, symbol_precedence_set) + Take a location as additional argument. + Adjust all callers. + +2002-06-15 Akim Demaille + + * src/parse-gram.y: Move %token in the declaration section so that + we don't depend upon CVS Bison. + +2002-06-15 Akim Demaille + + * src/state.h, src/state.c (state_rule_lookaheads_print): New. + * src/print.c (print_core): Use it. + +2002-06-15 Akim Demaille + + * src/conflicts.c (log_resolution): Accept the rule involved in + the sr conflicts instead of the lookahead number that points to + that rule. + (flush_reduce): Accept the current lookahead vector as argument, + instead of the index in LA. + (resolve_sr_conflict): Accept the current number of lookahead + bitset to consider for the STATE, instead of the index in LA. + (set_conflicts): Adjust. + * src/lalr.c, src/lalr.h, src/state.h: Comment changes. + +2002-06-15 Akim Demaille + + * src/state.h (state_t): Replace the `lookaheadsp' member, a + short, with `lookaheads' (bitsetv), `lookaheads_rule' (rule_t**). + Adjust all dependencies. + * src/lalr.c (initialize_lookaheads): Split into... + (states_lookaheads_count, states_lookaheads_initialize): these. + (lalr): Adjust. + +2002-06-15 Akim Demaille + + * src/gram.h, src/gram.c (grammar_rules_partial_print): New, eved + out of... + (grammar_rules_print): here. + * src/reduce.c (reduce_output): Use it. + * tests/reduce.at (Useless Rules, Reduced Automaton) + (Underivable Rules): Adjust. + +2002-06-15 Akim Demaille + + Copy BYacc's nice way to report the grammar. + + * src/gram.h, src/gram.c (grammar_rhs_print, grammar_rules_print): + New. + Don't print the rules' location, it is confusing and useless. + (rule_print): Use grammar_rhs_print. + * src/print.c (print_grammar): Use grammar_rules_print. + +2002-06-15 Akim Demaille + + Complete and rationalize `useless thing' warnings. + + * src/symtab.h, src/symtab.c (symbol_tag_get, symbol_tag_get_n) + (symbol_tag_print): New. + Use them everywhere in place of accessing directly the tag member. + * src/gram.h, src/gram.c (rule_print): New. + Use it where a rule used to be printed `by hand'. + * src/reduce.c (nonterminals_reduce): Report the use nonterminals. + (reduce_grammar_tables): Report the useless rules. + (reduce_print): Useless things are a warning, not an error. + Report it as such. + * tests/reduce.at (Useless Nonterminals, Useless Rules): + (Reduced Automaton, Underivable Rules): Adjust. + * tests/regression.at (Web2c Report, Web2c Report): Adjust. + * tests/conflicts.at (Unresolved SR Conflicts) + (Solved SR Conflicts): Adjust. + +2002-06-15 Akim Demaille + + Let symbols have a location. + + * src/symtab.h, src/symtab.c (symbol_t): Location is a new member. + (getsym): Adjust. + Adjust all callers. + * src/complain.h, src/complain.c (complain_at, fatal_at, warn_at): + Use location_t, not int. + * src/symtab.c (symbol_check_defined): Take advantage of the + location. + * tests/regression.at (Invalid inputs): Adjust. + +2002-06-15 Akim Demaille + + * src/parse-gram.y (YYLLOC_DEFAULT, current_lhs_location): New. + (input): Don't try to initialize yylloc here, do it in the + scanner. + * src/scan-gram.l (YY_USER_INIT): Initialize yylloc. + * src/gram.h (rule_t): Change line and action_line into location + and action_location, of location_t type. + Adjust all dependencies. + * src/location.h, src/location.c (empty_location): New. + * src/reader.h, src/reader.c (grammar_start_symbol_set) + (grammar_symbol_append, grammar_rule_begin, grammar_rule_end) + (grammar_current_rule_symbol_append) + (grammar_current_rule_action_append): Expect a location as argument. + * src/reader.c (grammar_midrule_action): Adjust to attach an + action's location as dummy symbol location. + * src/symtab.h, src/symtab.c (startsymbol_location): New. + * tests/regression.at (Web2c Report, Rule Line Numbers): Adjust + the line numbers. + +2002-06-14 Akim Demaille + + Grammar declarations may be found in the grammar section. + + * src/parse-gram.y (rules_or_grammar_declaration): New. + (declarations): Each declaration may end with a semicolon, not + just... + (grammar_declaration): `"%union"'. + (grammar): Branch to rules_or_grammar_declaration. + +2002-06-14 Akim Demaille + + * src/main.c (main): Invoke scanner_free. + +2002-06-14 Akim Demaille + + * src/output.c (m4_invoke): Extracted from... + (output_skeleton): here. + Free tempfile. + +2002-06-14 Akim Demaille + + * src/parse-gram.y (directives, directive, gram) + (grammar_directives, precedence_directives, precedence_directive): + Rename as... + (declarations, declaration, grammar, grammar_declaration) + (precedence_declaration, precedence_declarator): these. + (symbol_declaration): New. + +2002-06-14 Akim Demaille + + * src/files.c (action_obstack): Remove, unused. + (output_obstack): Remove it, and all its dependencies, as it is no + longer needed. + * src/reader.c (epilogue_set): Build the epilogue in the + muscle_obstack. + * src/output.h, src/output.c (muscle_obstack): Move to... + * src/muscle_tab.h, src/muscle_tab.h: here. + (muscle_init): Initialize muscle_obstack. + (muscle_free): New. + * src/main.c (main): Call it. + +2002-06-14 Akim Demaille + + * src/location.h: New, extracted from... + * src/reader.h: here. + * src/Makefile.am (noinst_HEADERS): Merge into + (bison_SOURCES): this. + Add location.h. + * src/parse-gram.y: Use location_t instead of Bison's. + * src/reader.h, src/reader.c (prologue_augment, epilogue_set): + Use location_t instead of ints. + +2002-06-14 Akim Demaille + + * data/bison.simple, data/bison.c++: Be sure to restore the + current #line when returning to the skeleton contents after having + exposed the input file's #line. + +2002-06-12 Akim Demaille + + * src/scan-gram.l (SC_BRACED_CODE): Don't use `<.*>', it is too + eager. + * tests/actions.at (Exotic Dollars): New. + +2002-06-12 Akim Demaille + + * src/scan-gram.l (SC_PROLOGUE): Don't eat characters amongst + ['"/] too eagerly. + * tests/input.at (Torturing the Scanner): New. + +2002-06-11 Akim Demaille + + * src/scan-gram.l (YY_OBS_INIT): Remove, replace with... + [SC_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,SC_PROLOGUE] + [SC_EPILOGUE]: Output the quadrigraphs only when not in a comment. + * src/reader.h, src/scan-gram.l (scanner_initialize): this. + * src/reader.c (reader): Use it. + +2002-06-11 Akim Demaille + + * src/scan-gram.l (YY_OBS_FINISH): Don't set yylval. + Adjust all callers. + (scanner_last_string_free): New. + +2002-06-11 Akim Demaille + + * src/scan-gram.l (YY_INIT, YY_GROW, YY_FINISH): Rename as... + (YY_OBS_INIT, YY_OBS_GROW, YY_OBS_FINISH): these. + (last_string, YY_OBS_FREE): New. + Use them when returning an ID. + +2002-06-11 Akim Demaille + + Have Bison grammars parsed by a Bison grammar. + + * src/reader.c, src/reader.h (prologue_augment): New. + * src/reader.c (copy_definition): Remove. + + * src/reader.h, src/reader.c (gram_start_symbol_set, prologue_augment) + (grammar_symbol_append, grammar_rule_begin, grammar_midrule_action) + (grammar_current_rule_prec_set, grammar_current_rule_check) + (grammar_current_rule_symbol_append) + (grammar_current_rule_action_append): Export. + * src/parse-gram.y (symbol_list_new, symbol_list_symbol_append_ + (symbol_list_action_append): Remove. + Hook the routines from reader. + * src/scan-gram.l: In INITIAL, characters and strings are tokens. + * src/system.h (ATTRIBUTE_NORETURN, ATTRIBUTE_UNUSED): Now. + + * src/reader.c (read_declarations): Remove, unused. + + * src/parse-gram.y: Handle the epilogue. + * src/reader.h, src/reader.c (gram_start_symbol_set): Rename as... + (grammar_start_symbol_set): this. + * src/scan-gram.l: Be sure to ``use'' yycontrol to keep GCC quiet. + * src/reader.c (readgram): Remove, unused. + (reader): Adjust to insert eoftoken and axiom where appropriate. + + * src/reader.c (copy_dollar): Replace with... + * src/scan-gram.h (handle_dollar): this. + * src/parse-gram.y: Remove `%thong'. + + * src/reader.c (copy_at): Replace with... + * src/scan-gram.h (handle_at): this. + + * src/complain.h, src/complain.c (warn_at, complain_at, fatal_at): + New. + + * src/scan-gram.l (YY_LINES): Keep lineno synchronized for the + time being. + + * src/reader.h, src/reader.c (grammar_rule_end): New. + + * src/parse.y (current_type, current_class): New. + Implement `%nterm', `%token' support. + Merge `%term' into `%token'. + (string_as_id): New. + * src/symtab.h, src/symtab.c (symbol_make_alias): Don't pass the + type name. + + * src/parse-gram.y: Be sure to handle properly the beginning of + rules. + + * src/parse-gram.y: Handle %type. + * src/reader.c (grammar_rule_end): Call grammar_current_rule_check. + + * src/parse-gram.y: More directives support. + * src/options.c: No longer handle source directives. + + * src/parse-gram.y: Fix %output. + + * src/parse-gram.y: Handle %union. + Use the prologue locations. + * src/reader.c (parse_union_decl): Remove. + + * src/reader.h, src/reader.c (epilogue_set): New. + * src/parse-gram.y: Use it. + + * data/bison.simple, data/bison.c++: b4_stype is now either not + defined, then default to int, or to the contents of %union, + without `union' itself. + Adjust. + * src/muscle_tab.c (muscle_init): Don't predefine `stype'. + + * src/output.c (actions_output): Don't output braces, as they are + already handled by the scanner. + + * src/scan-gram.l (SC_CHARACTER): Set the user_token_number of + characters to themselves. + + * tests/reduce.at (Reduced Automaton): End the grammars with %% so + that the epilogue has a proper #line. + + * src/parse-gram.y: Handle precedence/associativity. + + * src/symtab.c (symbol_precedence_set): Requires the symbol to be + a terminal. + * src/scan-gram.l (SC_BRACED_CODE): Catch strings and characters. + * tests/calc.at: Do not use `%token "foo"' as it makes not sense + at all to define terminals that cannot be emitted. + + * src/scan-gram.l: Escape M4 characters. + + * src/scan-gram.l: Working properly with escapes in user + strings/characters. + + * tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR) + (AT_DATA_HORIZONTAL_GRAMMAR): Respect the `%token ID NUM STRING' + grammar. + Use more modest sizes, as for the time being the parser does not + release memory, and therefore the process swallows a huge amount + of memory. + + * tests/torture.at (AT_DATA_LOOKAHEADS_GRAMMAR): Adjust to the + stricter %token grammar. + + * src/symtab.h (associativity): Add `undef_assoc'. + (symbol_precedence_set): Do nothing when passed an undef_assoc. + * src/symtab.c (symbol_check_alias_consistence): Adjust. + + * tests/regression.at (Invalid %directive): Remove, as it is now + meaningless. + (Invalid inputs): Adjust to the new error messages. + (Token definitions): The new grammar doesn't allow too many + eccentricities. + + * src/lex.h, src/lex.c: Remove. + * src/reader.c (lastprec, skip_to_char, read_signed_integer) + (copy_character, copy_string2, copy_string, copy_identifier) + (copy_comment, parse_token_decl, parse_type_decl, parse_assoc_decl) + (parse_muscle_decl, parse_dquoted_param, parse_skel_decl) + (parse_action): Remove. + * po/POTFILES.in: Adjust. + +2002-06-11 Akim Demaille + + * src/reader.c (parse_action): Don't store directly into the + rule's action member: return the action as a string. + Don't require `rule_length' as an argument: compute it. + (grammar_current_rule_symbol_append) + (grammar_current_rule_action_append): New, eved out from + (readgram): here. + Remove `action_flag', `rulelength', unused now. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_current_rule_prec_set). + (grammar_current_rule_check): New, eved out from... + (readgram): here. + Remove `xaction', `first_rhs': useless. + * tests/input.at (Type clashes): New. + * tests/existing.at (GNU Cim Grammar): Adjust. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_midrule_action): New, Eved out from + (readgram): here. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_rule_begin, previous_rule, current_rule): + New. + (readgram): Use them as replacement of inlined code, crule and + crule1. + +2002-06-11 Akim Demaille + + * src/reader.c (grammar_end, grammar_symbol_append): New. + (readgram): Use them. + Make the use of `p' as local as possible. + +2002-06-10 Akim Demaille + + GCJ's parser requires the tokens to be defined before the prologue. + + * data/bison.simple: Output the token definition before the user's + prologue. + * tests/regression.at (Braces parsing, Duplicate string) + (Mixing %token styles): Check the output from bison. + (Early token definitions): New. + +2002-06-10 Akim Demaille + + * src/symtab.c (symbol_user_token_number_set): Don't complain when + assigning twice the same user number to a token, so that we can + use it in... + * src/lex.c (lex): here. + Also use `symbol_class_set' instead of hand written code. + * src/reader.c (parse_assoc_decl): Likewise. + +2002-06-10 Akim Demaille + + * src/symtab.c, src/symtab.c (symbol_class_set) + (symbol_user_token_number_set): New. + * src/reader.c (parse_token_decl): Use them. + Use a switch instead of ifs. + Use a single argument. + +2002-06-10 Akim Demaille + + Remove `%thong' support as it is undocumented, unused, duplicates + `%token's job, and creates useless e-mail traffic with people who + want to know what it is, why it is undocumented, unused, and + duplicates `%token's job. + + * src/reader.c (parse_thong_decl): Remove. + * src/options.c (option_table): Remove "thong". + * src/lex.h (tok_thong): Remove. + +2002-06-10 Akim Demaille + + * src/symtab.c, src/symtab.c (symbol_type_set) + (symbol_precedence_set): New. + * src/reader.c (parse_type_decl, parse_assoc_decl): Use them. + (value_components_used): Remove, unused. + +2002-06-09 Akim Demaille + + Move symbols handling code out of the reader. + + * src/reader.h, src/reader.c (errtoken, undeftoken, eoftoken) + (axiom): Move to... + * src/symtab.h, src/symtab.c: here. + + * src/gram.c (start_symbol): Remove: use startsymbol->number. + * src/reader.c (startval): Rename as... + * src/symtab.h, src/symtab.c (startsymbol): this. + * src/reader.c: Adjust. + + * src/reader.c (symbol_check_defined, symbol_make_alias) + (symbol_check_alias_consistence, symbol_pack, symbol_translation) + (token_translations_init) + Move to... + * src/symtab.c: here. + * src/reader.c (packsymbols): Move to... + * src/symtab.h, src/symtab.c (symbols_pack): here. + * src/symtab.h, src/symtab.c (symbol_make_alias): Takes SYMVAL as + argument. + +2002-06-03 Akim Demaille + + * src/muscle_tab.c (muscle_insert, muscle_find): Declarations, + then statements. + +2002-06-03 Akim Demaille + + * src/muscle_tab.c (muscle_find, muscle_insert): Don't initialize + structs with non literals. + * src/scan-skel.l: never-interactive. + * src/conflicts.c (enum conflict_resolution_e): No trailing + comma. + * src/getargs.c (usage): Split long literal strings. + Reported by Hans Aberg. + +2002-05-28 Akim Demaille + + * data/bison.c++: Use C++ ostreams. + (cdebug_): New member. + +2002-05-28 Akim Demaille + + * src/output.c (output_skeleton): Be sure to allocate enough room + for `/' _and_ for `\0' in full_skeleton. + +2002-05-28 Akim Demaille + + * data/bison.c++: Catch up with bison.simple: + 2002-05-24 Paul Hilfinger + and Paul Eggert : `error' handing. + 2002-05-26 Akim Demaille : stos_, token_number_, + and popping traces. + +2002-05-27 Paul Hilfinger + + * src/output.c (output_skeleton): Put an explicit path in front of + the skeleton file name, rather than relying on the -I directory, + to partially alleviate effects of having a skeleton file lying around + in the current directory. + +2002-05-27 Paul Hilfinger + + * src/conflicts.c (log_resolution): Correct typo: + obstack_printf should be obstack_fgrow1. + +2002-05-26 Akim Demaille + + * src/state.h (state_t): `solved_conflicts' is a new member. + * src/LR0.c (new_state): Set it to 0. + * src/conflicts.h, src/conflicts.c (print_conflicts) + (free_conflicts, solve_conflicts): Rename as... + (conflicts_print, conflicts_free, conflicts_solve): these. + Adjust callers. + * src/conflicts.c (enum conflict_resolution_e) + (solved_conflicts_obstack): New, used by... + (log_resolution): this. + Adjust to attach the conflict resolution to each state. + Complete the description with the precedence/associativity + information. + (resolve_sr_conflict): Adjust. + * src/print.c (print_state): Output its solved_conflicts. + * tests/conflicts.at (Unresolved SR Conflicts) + (Solved SR Conflicts): Exercise --report=all. + +2002-05-26 Akim Demaille + + * src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c, + * src/nullable.c, src/output.c, src/print.c, src/print_graph.c, + * src/reader.c, src/reduce.c, src/state.h, src/symtab.h + (token_number_t, item_number_as_token_number) + (token_number_as_item_number, muscle_insert_token_number_table): + Rename as... + (symbol_number_t, item_number_as_symbol_number) + (symbol_number_as_item_number, muscle_insert_symbol_number_table): + these, since it is more appropriate. + +2002-05-26 Akim Demaille + + * tests/calc.at (AT_CHECK_CALC): Adjust: there are now additional + `Error:' lines. + * data/bison.simple (yystos) [YYDEBUG]: New. + (yyparse) [YYDEBUG]: Display the symbols which are popped during + error recovery. + * tests/regression.at (Web2c Actions): Adjust: yystos is output now. + +2002-05-25 Akim Demaille + + * doc/bison.texinfo (Debugging): Split into... + (Tracing): this new section, its former contents, and... + (Understanding): this new section. + * src/getargs.h, src/getargs.c (verbose_flag): Remove, replaced + by... + (report_flag): this. + Adjust all dependencies. + (report_args, report_types, report_argmatch): New. + (usage, getargs): Report/support -r, --report. + * src/options.h + (struct option_table_struct): Rename as.., + (struct option_table_s): this. + Rename the `set_flag' member to `flag' to match with getopt_long's + struct. + * src/options.c (option_table): Split verbose into an entry for + %verbose, and another for --verbose. + Support --report/-r, so remove -r from the obsolete --raw. + * src/print.c: Attach full item sets and lookaheads reports to + report_flag instead of trace_flag. + * lib/argmatch.h, lib/argmatch.c: New, from Fileutils 4.1. + +2002-05-24 Paul Hilfinger + and Paul Eggert + + * data/bison.simple (yyparse): Correct error handling to conform to + POSIX and yacc. Specifically, after syntax error is discovered, + do not reduce further before shifting the error token. + Clean up the code a bit by removing the labels yyerrdefault, + yyerrhandle, yyerrpop. + * NEWS: Document the above. + +2002-05-20 Paul Hilfinger + + * data/bison.simple (yyr1): Don't use yy_token_number_type as element + type; it isn't always big enough, since it doesn't necessarily + include non-terminals. + (yytranslate): Expand definition of yy_token_number_type, so that + the latter can be removed. + (yy_token_number_type): Remove, only one use. + * data/bison.c++ (r1_): Parallel change to yyr1 in bison.simple--- + don't use TokenNumberType as element type. + + * tests/regression.at: Modify expected output to agree with change + to yyr1 and yytranslate. + +2002-05-13 Florian Krohm + + * src/reader.c (parse_action): Use copy_character instead of + obstack_1grow. + +2002-05-13 Akim Demaille + + * tests/regression.at (Token definitions): Prototype yylex and + yyerror. + +2002-05-12 Paul Hilfinger + + * src/scan-skel.l: Correct off-by-one error in handling of __oline__. + * data/bison.simple (b4_sint_type, b4_uint_type): Correct to reflect + 32-bit arithmetic. + * data/bison.c++ (b4_sint_type, b4_uint_type): Ditto. + +2002-05-07 Akim Demaille + + * tests/synclines.at: Be sure to prototype yylex and yyerror to + avoid GCC warnings. + +2002-05-07 Akim Demaille + + Kill GCC warnings. + + * src/reduce.c (nonterminals_reduce): Don't loop over RITEM: loop + over the RHS of each rule. + * src/gram.h, src/gram.c (nritems): Is `unsigned int', not int. + * src/state.h (state_t): Member `nitems' is unsigned short. + * src/LR0.c (get_state): Adjust. + * src/reader.c (packgram): Likewise. + * src/output.c (GENERATE_MUSCLE_INSERT_TABLE): `max' is of type + `Type'. + (muscle_insert_int_table): Remove, unused. + (prepare_rules): Remove `max'. + +2002-05-06 Akim Demaille + + * src/closure.c (print_firsts): Display of the symbol tags. + (bitmatrix_print): Move to... + * lib/bitsetv-print.h, lib/bitsetv-print.c (bitsetv_matrix_dump): + here. + * tests/sets.at (Nullable, Broken Closure, Firsts): Adjust. + +2002-05-06 Akim Demaille + + * src/muscle_tab.c (muscle_m4_output): Must return TRUE for + hash_do_for_each. + +2002-05-06 Akim Demaille + + * src/LR0.c (new_state, get_state): Instead of using the global + `kernel_size' and `kernel_base', have two new arguments: + `core_size' and `core'. + Adjust callers. + +2002-05-06 Akim Demaille + + * src/reader.c (packgram): No longer end `ritem' with a 0 + sentinel: it is not used. + +2002-05-05 Akim Demaille + + New experimental feature: display the lookaheads in the report and + graph. + + * src/print (print_core): When --trace-flag, display the rules + lookaheads. + * src/print_graph.c (print_core): Likewise. + Swap the arguments. + Adjust caller. + +2002-05-05 Akim Demaille + + * tests/torture.at (Many lookaheads): New test. + +2002-05-05 Akim Demaille + + * src/output.c (GENERATE_OUTPUT_TABLE): Replace with... + (GENERATE_MUSCLE_INSERT_TABLE): this. + (output_int_table, output_unsigned_int_table, output_short_table) + (output_token_number_table, output_item_number_table): Replace with... + (muscle_insert_int_table, muscle_insert_unsigned_int_table) + (muscle_insert_short_table, muscle_insert_token_number_table) + (muscle_insert_item_number_table): these. + Adjust all callers. + (prepare_tokens): Don't free `translations', since... + * src/reader.h, src/reader.c (grammar_free): do it. + Move to... + * src/gram.h, src/gram.c (grammar_free): here. + * data/bison.simple, data/bison.c++: b4_token_number_max is now + b4_translate_max. + +2002-05-05 Akim Demaille + + * src/output.c (output_unsigned_int_table): New. + (prepare_rules): `i' is unsigned. + `prhs', `rline', `r2' are unsigned int. + Rename muscle `rhs_number_max' as `rhs_max'. + Output muscles `prhs_max', `rline_max', and `r2_max'. + Free rline and r1. + * data/bison.simple, data/bison.c++: Adjust to use these muscles + to compute types instead of constant types. + * tests/regression.at (Web2c Actions): Adjust. + +2002-05-04 Akim Demaille + + * src/symtab.h (SALIAS, SUNDEF): Rename as... + (USER_NUMBER_ALIAS, USER_NUMBER_UNDEFINED): these. + Adjust dependencies. + * src/output.c (token_definitions_output): Be sure not to output a + `#define 'a'' when fed with `%token 'a' "a"'. + * tests/regression.at (Token definitions): New. + +2002-05-03 Paul Eggert + + * data/bison.simple (b4_token_defines): Also define YYTOKENTYPE + for K&R C. + +2002-05-03 gettextize + + * Makefile.am (SUBDIRS): Remove intl. + (EXTRA_DIST): Add config/config.rpath. + +2002-05-03 Akim Demaille + + * data/bison.simple (m4_if): Don't output empty enums. + And actually, output valid enum definitions :(. + +2002-05-03 Akim Demaille + + * configure.bat: Remove, completely obsolete. + * Makefile.am (EXTRA_DIST): Adjust. + Don't distribute config.rpath... + * config/Makefile.am (EXTRA_DIST): Do it. + +2002-05-03 Akim Demaille + + * configure.in (GETTEXT_VERSION): New. + Suggested by Bruno Haible for the forthcoming Gettext 0.10.3. + +2002-05-03 Akim Demaille + + * data/bison.simple (b4_token_enum): New. + (b4_token_defines): Use it to output tokens both as #define and + enums. + Suggested by Paul Eggert. + * src/output.c (token_definitions_output): Don't output spurious + white spaces. + +2002-05-03 Akim Demaille + + * data/m4sugar/m4sugar.m4: Update from CVS Autoconf. + +2002-05-02 Robert Anisko + + * data/bison.c++: Adapt expansion of $s and @s to the C++ parser. + Update the stack class, give a try to deque as the default container. + +2002-05-02 Akim Demaille + + * data/bison.simple (yyparse): Do not implement @$ = @1. + (YYLLOC_DEFAULT): Adjust to do it. + * doc/bison.texinfo (Location Default Action): Fix. + +2002-05-02 Akim Demaille + + * src/reader.c (parse_braces): Merge into... + (parse_action): this. + +2002-05-02 Akim Demaille + + * configure.in (ALL_LINGUAS): Remove. + * po/LINGUAS, hr.po: New. + +2002-05-02 Akim Demaille + + Remove the so called hairy (semantic) parsers. + + * src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove. + * src/gram.h, src/gram.c (semantic_parser): Remove. + (rule_t): Remove the guard and guard_line members. + * src/lex.h (token_t): remove tok_guard. + * src/options.c (option_table): Remove %guard and %semantic_parser + support. + * src/output.c, src/output.h (guards_output): Remove. + (prepare): Adjust. + (token_definitions_output): Don't output the `T' + tokens (???). + (output_skeleton): Don't output the guards. + * src/files.c, src/files.c (attrsfile): Remove. + * src/reader.c (symbol_list): Remove the guard and guard_line + members. + Adjust dependencies. + (parse_guard): Remove. + * data/bison.hairy: Remove. + * doc/bison.texinfo (Environment Variables): Remove occurrences of + BISON_HAIRY. + +2002-05-02 Akim Demaille + + * src/reader.c (copy_at, copy_dollarm parse_braces, parse_action) + (parse_guard): Rename the formal argument `stack_offset' as + `rule_length', which is more readable. + Adjust callers. + (copy_at, copy_dollar): Instead of outputting the hard coded + values of $$, $n and so forth, output invocation to b4_lhs_value, + b4_lhs_location, b4_rhs_value, and b4_rhs_location. + Note: this patch partially drops `semantic-parser' support: it + always does `rule_length - n', where semantic parsers ought to + always use `-n'. + * data/bison.simple, data/bison.c++ (b4_lhs_value) + (b4_lhs_location, b4_rhs_value, and b4_rhs_location: New. + +2002-05-02 Akim Demaille + + * configure.in (AC_INIT): Bump to 1.49b. + (AM_INIT_AUTOMAKE): Short invocation. + +2002-05-02 Akim Demaille + + Version 1.49a. + +2002-05-01 Akim Demaille + + * src/skeleton.h: Remove. + +2002-05-01 Akim Demaille + + * src/skeleton.h: Fix the #endif. + Reported by Magnus Fromreide. + +2002-04-26 Paul Eggert + + * data/bison.simple (YYSTYPE_IS_TRIVIAL, YYLTYPE_IS_TRIVIAL): + Define if we define YYSTYPE and YYLTYPE, respectively. + (YYCOPY): Fix [] quoting problem in the non-GCC case. + +2002-04-25 Robert Anisko + + * src/scan-skel.l: Postprocess quadrigraphs. + + * src/reader.c (copy_character): New function, used to output + single characters while replacing `[' and `]' with quadrigraphs, to + avoid troubles with M4 quotes. + (copy_comment): Output characters with copy_character. + (read_additionnal_code): Likewise. + (copy_string2): Likewise. + (copy_definition): Likewise. + + * tests/calc.at: Exercise M4 quoting. + +2002-04-25 Akim Demaille + + * tests/sets.at (AT_EXTRACT_SETS): Sed portability issue: no space + between `!' and the command. + Reported by Paul Eggert. + +2002-04-24 Robert Anisko + + * tests/calc.at: Exercise prologue splitting. + + * data/bison.simple, data/bison.c++: Use `b4_pre_prologue' and + `b4_post_prologue' instead of `b4_prologue'. + + * src/output.c (prepare): Add the `pre_prologue' and `post_prologue' + muscles. + (output): Free pre_prologue_obstack and post_prologue_obstack. + * src/files.h, src/files.c (attrs_obstack): Remove. + (pre_prologue_obstack, post_prologue_obstack): New. + * src/reader.c (copy_definition): Add a parameter to specify the + obstack to fill, instead of using attrs_obstack unconditionally. + (read_declarations): Pass pre_prologue_obstack to copy_definition if + `%union' has not yet been seen, pass post_prologue_obstack otherwise. + +2002-04-23 Paul Eggert + + * data/bison.simple: Remove unnecessary commentary and white + space differences from 1_29-branch. + Depend on YYERROR_VERBOSE, not defined (YYERROR_VERBOSE). + + (union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYCOPY, + YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or + if this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial + constructors or destructors. + + (yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack. + +2002-04-23 Akim Demaille + + * tests/sets.at (AT_EXTRACT_SETS): Don't use 8 char long sed labels. + * tests/synclines.at (AT_TEST_SYNCLINE): Be robust to GCC's + location with columns. + * tests/conflicts.at (%nonassoc and eof): Don't use `error.h'. + All reported by Paul Eggert. + +2002-04-22 Akim Demaille + + * src/reduce.c (dump_grammar): Move to... + * src/gram.h, src/gram.c (grammar_dump): here. + Be sure to separate long item numbers. + Don't read the members of a rule's prec if its nil. + +2002-04-22 Akim Demaille + + * src/output.c (table_size, table_grow): New. + (MAXTABLE): Remove, replace uses with table_size. + (pack_vector): Instead of dying when the table is too big, grow it. + +2002-04-22 Akim Demaille + + * data/bison.simple (yyr1): Its type is that of a token number. + * data/bison.c++ (r1_): Likewise. + * tests/regression.at (Web2c Actions): Adjust. + +2002-04-22 Akim Demaille + + * src/reader.c (token_translations_init): 256 is now the default + value for the error token, i.e., it will be assigned another + number if the user assigned 256 to one of her tokens. + (reader): Don't force 256 to error. + * doc/bison.texinfo (Symbols): Adjust. + * tests/torture.at (AT_DATA_HORIZONTAL_GRAMMAR) + (AT_DATA_TRIANGULAR_GRAMMAR): Number the tokens as 1, 2, 3 + etc. instead of 10, 20, 30 (which was used to `jump' over error + (256) and undefined (2)). + +2002-04-22 Akim Demaille + + Propagate more token_number_t. + + * src/gram.h (token_number_as_item_number) + (item_number_as_token_number): New. + * src/output.c (GENERATE_OUTPUT_TABLE): New. + Use it to create output_item_number_table and + output_token_number_table. + * src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c, + * src/lex.c, src/nullable.c, src/output.c, src/print.c, + * src/print_graph.c, src/reader.c, src/reduce.c, src/state.h, + * src/symtab.c, src/symtab.h: Use token_number_t instead of shorts. + +2002-04-22 Akim Demaille + + * src/output.h, src/output.c (get_lines_number): Remove. + +2002-04-19 Akim Demaille + + * doc/bison.texinfo (Actions): Make clear that `|' is not the same + as Lex/Flex'. + (Debugging): More details about enabling the debugging features. + (Table of Symbols): Describe $$, $n, @$, and @n. + Suggested by Tim Josling. + +2002-04-19 Akim Demaille + + * doc/bison.texinfo: Remove the uses of the obsolete @refill. + +2002-04-10 Akim Demaille + + * src/system.h: Rely on HAVE_LIMITS_H. + Suggested by Paul Eggert. + +2002-04-09 Akim Demaille + + * tests/calc.at (_AT_CHECK_CALC_ERROR): Receive as argument the + full stderr, and strip it according to the bison options, instead + of composing the error message from different bits. + This makes it easier to check for several error messages. + Adjust all the invocations. + Add an invocation exercising the error token. + Add an invocation demonstrating a stupid error message. + (_AT_DATA_CALC_Y): Follow the GCS: initial column is 1, not 0. + Adjust the tests. + Error message are for stderr, not stdout. + +2002-04-09 Akim Demaille + + * src/gram.h, src/gram.c (error_token_number): Remove, use + errtoken->number. + * src/reader.c (reader): Don't specify the user token number (2) + for $undefined, as it uselessly prevents using it. + * src/gram.h (token_number_t): Move to... + * src/symtab.h: here. + (state_t.number): Is a token_number_t. + * src/print.c, src/reader.c: Use undeftoken->number instead of + hard coded 2. + (Even though this 2 is not the same as above: the number of the + undeftoken remains being 2, it is its user token number which + might not be 2). + * src/output.c (prepare_tokens): Rename the `maxtok' muscle with + `user_token_number_max'. + Output `undef_token_number'. + * data/bison.simple, data/bison.c++: Use them. + Be sure to map invalid yylex return values to + `undef_token_number'. This saves us from gratuitous SEGV. + + * tests/conflicts.at (Solved SR Conflicts) + (Unresolved SR Conflicts): Adjust. + * tests/regression.at (Web2c Actions): Adjust. + +2002-04-08 Akim Demaille + + * data/bison.c++: s/b4_item_number_max/b4_rhs_number_max/. + Adding #line. + Remove the duplicate `typedefs'. + (RhsNumberType): Fix the declaration and various other typos. + Use __ofile__. + * data/bison.simple: Use __ofile__. + * src/scan-skel.l: Handle __ofile__. + +2002-04-08 Akim Demaille + + * src/gram.h (item_number_t): New, the type of item numbers in + RITEM. Note that it must be able to code symbol numbers as + positive number, and the negation of rule numbers as negative + numbers. + Adjust all dependencies (pretty many). + * src/reduce.c (rule): Remove this `short *' pointer: use + item_number_t. + * src/system.h (MINSHORT, MAXSHORT): Remove. + Include `limits.h'. + Adjust dependencies to using SHRT_MAX and SHRT_MIN. + (shortcpy): Remove. + (MAXTABLE): Move to... + * src/output.c (MAXTABLE): here. + (prepare_rules): Use output_int_table to output rhs. + * data/bison.simple, data/bison.c++: Adjust. + * tests/torture.at (Big triangle): Move the limit from 254 to + 500. + * tests/regression.at (Web2c Actions): Ajust. + + Trying with bigger grammars shows various phenomena: at 3000 (28Mb + of grammar file) bison is killed by my system, at 2000 (12Mb) bison + passes, but produces negative #line number, once fixed, GCC is + killed while compiling 14Mb, at 1500 (6.7 Mb of grammar, 8.2Mb of + C), it passes. + * src/state.h (state_h): Code input lines on ints, not shorts. + +2002-04-08 Akim Demaille + + * src/reduce.c (reduce_grammar): First reduce the nonterminals, + and then the grammar. + +2002-04-08 Akim Demaille + + * src/system.h: No longer using strndup. + +2002-04-07 Akim Demaille + + * src/muscle_tab.h (MUSCLE_INSERT_LONG_INT): New. + * src/output.c (output_table_data): Return the longest number. + (prepare_tokens): Output `token_number_max'). + * data/bison.simple, data/bison.c++ (b4_sint_type, b4_uint_type): + New. + Use them to define yy_token_number_type/TokenNumberType. + Use this type for yytranslate. + * tests/torture.at (Big triangle): Push the limit from 124 to + 253. + * tests/regression.at (Web2c Actions): Adjust. + +2002-04-07 Akim Demaille + + * tests/torture.at (Big triangle): New. + (GNU AWK Grammar, GNU Cim Grammar): Move to... + * tests/existing.at: here. + +2002-04-07 Akim Demaille + + * src/gram.h, src/gram.c (nitems): Remove, it is an alias of + nritems. + Adjust dependencies. + +2002-04-07 Akim Demaille + + * src/reader.c: Normalize increments to prefix form. + +2002-04-07 Akim Demaille + + * src/reader.c, symtab.c: Remove debugging code. + +2002-04-07 Akim Demaille + + Rename all the `bucket's as `symbol_t'. + + * src/gram.c, src/gram.h, src/lex.c, src/lex.h, src/output.c, + * src/reader.c, src/reader.h, src/reduce.c, src/state.h, + * src/symtab.c, src/symtab.h (bucket): Rename as... + (symbol_t): this. + (symbol_list_new, bucket_check_defined, bucket_make_alias) + (bucket_check_alias_consistence, bucket_pack, bucket_translation) + (bucket_new, bucket_free, hash_compare_bucket, hash_bucket) + (buckets_new, buckets_free, buckets_do): Rename as... + (symbol_list_new, symbol_check_defined, symbol_make_alias) + (symbol_check_alias_consistence, symbol_pack, symbol_translation) + (symbol_new, symbol_free, hash_compare_symbol_t, hash_symbol_t) + (symbols_new, symbols_free, symbols_do): these. + +2002-04-07 Akim Demaille + + Use lib/hash for the symbol table. + + * src/gram.c (ntokens): Initialize to 1, to reserve a slot for + EOF. + * src/lex.c (lex): Set the `number' member of new terminals. + * src/reader.c (bucket_check_defined, bucket_make_alias) + (bucket_check_alias_consistence, bucket_translation): New. + (reader, grammar_free, readgram, token_translations_init) + (packsymbols): Adjust. + (reader): Number the predefined tokens. + * src/reduce.c (inaccessable_symbols): Just use hard coded numbers + for predefined tokens. + * src/symtab.h (bucket): Remove all the hash table related + members. + * src/symtab.c (symtab): Replace by... + (bucket_table): this. + (bucket_new, bucket_free, hash_compare_bucket, hash_bucket) + (buckets_new, buckets_do): New. + +2002-04-07 Akim Demaille + + * src/gram.c (nitems, nrules, nsyms, ntokens, nvars, nritems) + (start_symbol, max_user_token_number, semantic_parser) + (error_token_number): Initialize. + * src/reader.c (grammar, start_flag, startval, typed, lastprec): + Initialize. + (reader): Don't. + (errtoken, eoftoken, undeftoken, axiom): Extern. + +2002-04-07 Akim Demaille + + * src/gram.h (rule_s): prec and precsym are now pointers + to the bucket giving the priority/associativity. + Member `associativity' removed: useless. + * src/reduce.c, src/conflicts.c: Adjust. + +2002-04-07 Akim Demaille + + * src/lalr.c, src/LR0.c, src/closure.c, src/gram.c, src/reduce.c: + Properly escape the symbols' TAG when outputting them. + +2002-04-07 Akim Demaille + + * src/lalr.h (LA): Is a bitsetv, not bitset*. + +2002-04-07 Akim Demaille + + * src/lalr.h, src/lalr.c (LAruleno): Replace with... + (LArule): this, which is an array to rule_t*. + * src/print.c, src/conflicts.c: Adjust. + +2002-04-07 Akim Demaille + + * src/gram.h (rule_t): Rename `number' as `user_number'. + `number' is a new member. + Adjust dependencies. + * src/reduce.c (reduce_grammar_tables): Renumber rule_t.number. + +2002-04-07 Akim Demaille + + As a result of the previous patch, it is no longer needed + to reorder ritem itself. + + * src/reduce.c (reduce_grammar_tables): Don't sort RITEM. + +2002-04-07 Akim Demaille + + Be sure never to walk through RITEMS, but use only data related to + the rules themselves. RITEMS should be banished. + + * src/output.c (output_token_translations): Rename as... + (prepare_tokens): this. + In addition to `translate', prepare the muscles `tname' and + `toknum', which were handled by... + (output_rule_data): this. + Remove, and move the remainder of its outputs into... + (prepare_rules): this new routines, which also merges content from + (output_gram): this. + (prepare_rules): Be sure never to walk through RITEMS. + (output_stos): Rename as... + (prepare_stos): this. + (output): Always invoke prepare_states, after all, just don't use it + in the output if you don't need it. + +2002-04-07 Akim Demaille + + * src/LR0.c (new_state): Display `nstates' as the name of the + newly created state. + Adjust to initialize first_state and last_state if needed. + Be sure to distinguish the initial from the final state. + (new_states): Create the itemset of the initial state, and use + new_state. + * src/closure.c (closure): Now that the initial state has its + items properly set, there is no need for a special case when + creating `ruleset'. + + As a result, now the rule 0, reducing to $axiom, is visible in the + outputs. Adjust the test suite. + + * tests/conflicts.at (Solved SR Conflicts) + (Unresolved SR Conflicts): Adjust. + * tests/regression.at (Web2c Report, Rule Line Numbers): Idem. + * tests/conflicts.at (S/R in initial): New. + +2002-04-07 Akim Demaille + + * src/LR0.c (allocate_itemsets): Don't loop over ritem: loop over + the RHS of the rules. + * src/output.c (output_gram): Likewise. + +2002-04-07 Akim Demaille + + * src/gram.h (rule_t): `lhs' is now a pointer to the symbol's + bucket. + Adjust all dependencies. + * src/reduce.c (nonterminals_reduce): Don't forget to renumber the + `number' of the buckets too. + * src/gram.h: Include `symtab.h'. + (associativity): Move to... + * src/symtab.h: here. + No longer include `gram.h'. + +2002-04-07 Akim Demaille + + * src/gram.h, src/gram.c (rules_rhs_length): New. + (ritem_longest_rhs): Use it. + * src/gram.h (rule_t): `number' is a new member. + * src/reader.c (packgram): Set it. + * src/reduce.c (reduce_grammar_tables): Move the useless rules at + the end of `rules', and count them out of `nrules'. + (reduce_output, dump_grammar): Adjust. + * src/print.c (print_grammar): It is no longer needed to check for + the usefulness of a rule, as useless rules are beyond `nrules + 1'. + * tests/reduce.at (Reduced Automaton): New test. + +2002-04-07 Akim Demaille + + * src/reduce.c (inaccessable_symbols): Fix a buglet: because of a + lacking `+ 1' to nrules, Bison reported as useless a token if it + was used solely to set the precedence of the last rule... + +2002-04-07 Akim Demaille + + * data/bison.c++, data/bison.simple: Don't output the current file + name in #line, to avoid useless diffs between two identical + outputs under different names. + +2002-04-07 Akim Demaille + + * src/closure.c, src/print.c, src/reader.c, src/reduce.c: + Normalize loops to using `< nrules + 1', not `<= nrules'. + +2002-04-07 Akim Demaille + + * TODO: Update. + +2002-04-07 Akim Demaille + + * src/output.c, src/reader.c, src/symtab.c, src/symtab.h: Rename + bucket.value as bucket.number. + +2002-04-07 Akim Demaille + + * src/closure.c, src/derives.c, src/gram.h, src/lalr.c, + * src/nullable.c, src/output.c, src/print.c, src/print_graph.c, + * src/reader.c, src/reduce.c: Let rule_t.rhs point directly to the + RHS, instead of being an index in RITEMS. + +2002-04-04 Paul Eggert + + * doc/bison.texinfo: Update copyright date. + (Rpcalc Lexer, Symbols, Token Decl): Don't assume ASCII. + (Symbols): Warn about running Bison in one character set, + but compiling and/or running in an incompatible one. + Warn about character code 256, too. + +2002-04-03 Paul Eggert + + * src/bison.data (YYSTACK_ALLOC): Depend on whether + YYERROR_VERBOSE is nonzero, not whether it is defined. + + Merge changes from bison-1_29-branch. + +2002-03-20 Paul Eggert + + Merge fixes from Debian bison_1.34-1.diff. + + * configure.in (AC_PREREQ): 2.53. + +2002-03-20 Akim Demaille + + * src/conflicts.c (log_resolution): Argument `resolution' is const. + +2002-03-19 Paul Eggert + + * src/bison.simple (YYCOPY): New macro. + (YYSTACK_RELOCATE): Use it. + Remove Type arg; no longer needed. All callers changed. + (yymemcpy): Remove; no longer needed. + + * Makefile.am (AUTOMAKE_OPTIONS): 1.6. + * doc/Makefile.am (AUTOMAKE_OPTIONS): Remove. + +2002-03-19 Akim Demaille + + Test and fix the #line outputs. + + * tests/atlocal.at (GCC): New. + * tests/synclines.at (AT_TEST_SYNCLINE): New macro. + (Prologue synch line, %union synch line, Postprologue synch line) + (Action synch line, Epilogue synch line): New tests. + * src/reader.c (parse_union_decl): Define the muscle stype_line. + * data/bison.simple, data/bison.c++: Use it. + +2002-03-19 Akim Demaille + + * tests/regression.at (%nonassoc and eof, Unresolved SR Conflicts) + (Solved SR Conflicts, %expect not enough, %expect right) + (%expect too much): Move to... + * tests/conflicts.at: this new file. + +2002-03-19 Akim Demaille + + * data/m4sugar/m4sugar.m4: Update from CVS Autoconf. + * data/bison.simple, data/bison.c++: Handle the `#define' part, so + that we can move to enums for instance. + * src/output.c (token_definitions_output): Output a list of + `token-name, token-number' instead of the #define. + (output_skeleton): Name this list `b4_tokens', not `b4_tokendefs'. + +2002-03-14 Akim Demaille + + Use Gettext 0.11.1. + +2002-03-09 Robert Anisko + + * data/bison.c++: Make the user able to add members to the generated + parser by subclassing. + +2002-03-05 Robert Anisko + + * src/reader.c (read_additionnal_code): `c' should be an integer, not + a character. + Reported by Nicolas Tisserand and Nicolas Burrus. + +2002-03-04 Robert Anisko + + * src/reader.c: Warn about lacking semi-colons, do not complain. + +2002-03-04 Robert Anisko + + * data/bison.c++: Remove a debug line. + +2002-03-04 Robert Anisko + + * data/bison.c++: Unmerge value as yylval and value as yyval. Unmerge + location as yylloc and location as yyloc. Use YYLLOC_DEFAULT, and + provide a default implementation. + +2002-03-04 Akim Demaille + + * tests/input.at (Invalid $n, Invalid @n): Add the ending `;'. + * tests/output.at (AT_CHECK_OUTPUT): Likewise. + * tests/headers.at (AT_TEST_CPP_GUARD_H): Ditto. + * tests/semantic.at (Parsing Guards): Similarly. + * src/reader.at (readgram): Complain if the last rule is not ended + with a semi-colon. + +2002-03-04 Akim Demaille + + * src/warshall.h, src/warshall.c (bitmatrix_print): Move to... + * src/closure.c: here. + (set_firsts): Use bitsetv_reflexive_transitive_closure instead of + RTC. + * src/warshall.h, src/warshall.c: Remove. + * tests/sets.at (Broken Closure): Adjust. + +2002-03-04 Akim Demaille + + * src/output.c (output_skeleton): tempdir is const. + bytes_read is unused. + +2002-03-04 Akim Demaille + + * lib/bbitset.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c, + * lib/bitsetv.h, lib/ebitset.c, lib/lbitset.c, lib/sbitset.c: + Update. + From Michael Hayes. + +2002-03-04 Akim Demaille + + * src/closure.c (closure): `r' is unused. + +2002-03-04 Akim Demaille + + * tests/sets.at (Broken Closure): Add the ending `;'. + * src/reader.at (readgram): Complain if a rule is not ended with a + semi-colon. + +2002-03-04 Akim Demaille + + * src/conflicts.c (set_conflicts): Use bitset_disjoint_p. + (count_sr_conflicts): Use bitset_count. + * src/reduce.c (inaccessable_symbols): Ditto. + (bits_size): Remove. + * src/warshall.h, src/warshall.c: Convert to bitsetv. + +2002-03-04 Akim Demaille + + * src/closure.c, src/conflicts.c, src/lalr.c, src/print.c, + * src/reduce.c: Remove the `bitset_zero's following the + `bitset_create's, as now it is performed by the latter. + +2002-03-04 Akim Demaille + + * lib/bitset.c, lib/bitset.h, lib/bitsetv.c, lib/bitsetv.h, + * lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, lib/lbitset.h, + * lib/sbitset.c, lib/sbitset.h, lib/bbitset.h: Update from the + latest sources from Michael. + +2002-03-04 Akim Demaille + + * src/output.c (output): Don't free the grammar. + * src/reader.c (grammar_free): New. + * src/main.c (main): Call it and don't free symtab here. + +2002-03-04 Akim Demaille + + * src/lex.c (parse_percent_token): Be sure to 0-end token_buffer + before returning. + Reported by Benoit Perrot. + +2002-03-04 Akim Demaille + + Use bitset operations when possible, not loops over bits. + + * src/conflicts.c (set_conflicts, count_sr_conflicts): Use + bitset_or. + * src/print.c (print_reductions): Use bitset_and, bitset_andn. + * src/reduce.c (useless_nonterminals): Formatting changes. + * src/warshall.c (TC): Use bitset_or. + +2002-03-04 Akim Demaille + + * src/lalr.h, src/lalr.c (tokensetsize): Remove, unused. + * src/system.h (BITS_PER_WORD, WORDSIZE, SETBIT, RESETBIT, BITISSET): + Ditto. + +2002-03-04 Akim Demaille + + * src/lalr.c (F): Now a bitset*. + Adjust all dependencies. + +2002-03-04 Akim Demaille + + * src/conflicts.c (shiftset, lookaheadset): Now bitset. + Adjust all dependencies. + +2002-03-04 Akim Demaille + + * src/L0.c, src/LR0.h (nstates): Be size_t. + Adjust comparisons (signed vs unsigned). + * src/conflics.c, src/lalr.c, src/lalr.h, src/output.c (LA): Now a + bitset*. + Adjust all dependencies. + +2002-03-04 Akim Demaille + + * src/closure.c (firsts): Now, also a bitset. + Adjust all dependencies. + (varsetsize): Remove, now unused. + * src/warshall.h, src/warshall.c: Now work on arrays of bitsets. + +2002-03-04 Akim Demaille + + * src/print.c: Convert to use bitset.h, not hand coded iterations + over ints. + +2002-03-04 Akim Demaille + + * src/reduce.c: Convert to use bitset.h, not hand coded BSet. + +2002-03-04 Akim Demaille + + * src/closure.c (ruleset): Be a bitset. + (rulesetsize): Remove. + +2002-03-04 Akim Demaille + + * lib/bitset-int.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c, + * lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, + * lib/lbitset.h, lib/sbitset.c, lib/sbitset.h: New. + * src/closure.c (fderives): Be an array of bitsets. + +2002-02-28 Robert Anisko + + * data/bison.c++: Merge the two generated headers. Insert a copyright + notice in each output file. + +2002-02-28 Akim Demaille + + * data/bison.c++: Copy the prologue of bison.simple to fetch + useful M4 definitions, such as b4_header_guard. + +2002-02-25 Akim Demaille + + * src/getargs.c (version): Give the name of the authors, and use a + translator friendly scheme for the bgr + copyright notice. + +2002-02-25 Akim Demaille + + * src/output.c (header_output): Remove, now handled completely via + M4. + +2002-02-25 Akim Demaille + + * m4/m4.m4: New, from CVS Autoconf. + * configure.in: Invoke it. + * src/output.c (output_skeleton): Use its result instead of the + hard coded name. + +2002-02-25 Akim Demaille + + * lib/tempname.c, lib/mkstemp.c, m4/mkstemp.m4: New, stolen from + Fileutils 4.1.5. + * configure.in: Invoke UTILS_FUNC_MKSTEMP. + * src/output.c (output_skeleton): Use mkstemp to create a real + temporary file. + Move the filling of `skeleton' and its muscle to... + (prepare): here. + (output): Move the definition of the prologue muscle to... + (prepare): here. + * src/system.h (DEFAULT_TMPDIR): New. + +2002-02-14 Paul Eggert + + Remove the support for C++ namespace cleanliness; it was + causing more problems than it was curing, since it didn't work + properly on some nonstandard C++ compilers. This can wait + for a proper C++ parser. + + * NEWS: Document this. + * doc/bison.texinfo (Bison Parser, Debugging): Remove special mention + of C++, as it's treated like C now. + * src/bison.simple (YYSTD): Remove. + (YYSIZE_T, YYFPRINTF, YYPARSE_PARAM_ARG, YYPARSE_PARAM_DECL): + Treat C++ just like Standard C instead of trying to support + namespace cleanliness. + +2002-02-14 Akim Demaille + + * tests/regression.at (else): Adjust to Andreas' change. + +2002-02-14 Akim Demaille + + * lib/Makefile.am (EXTRA_DIST): Ship strnlen.c. + +2002-02-13 Andreas Schwab + + * src/output.c (output_rule_data): Don't output NULL, it might + not be defined yet. + +2002-02-11 Robert Anisko + + * data/bison.c++ (YYDEBUG, YYERROR_VERBOSE): After the prologue. + (Copyright notice): Update. + +2002-02-11 Akim Demaille + + * tests/regression.at (%nonassoc and eof): Don't include + nonportable headers. + +2002-02-08 Robert Anisko + + * data/bison.c++: Correct error recovery. Make the user able to + initialize the starting location. + +2002-02-07 Akim Demaille + + * tests/input.at: New. + +2002-02-07 Robert Anisko + + * data/bison.c++: Replace some direct m4 expansions by constants. Be + more consistent when naming methods and variables. Put preprocessor + directives around tables only needed for debugging. + +2002-02-07 Robert Anisko + + * data/bison.c++ (yy::b4_name::print_): New method, replaces yyprint in + C++ parsers. + (yy::b4_name::parse): Use print_. + +2002-02-07 Robert Anisko + + * data/bison.c++ (yy::b4_name::parse): Error recovery is back. + +2002-02-07 Robert Anisko + + * data/bison.c++ (yy::b4_name::error_): New method, replaces yyerror in + C++ parsers. + (yy::b4_name::parse): Build verbose error messages, and use error_. + +2002-02-06 Robert Anisko + + * data/bison.c++: Fix m4 quoting in comments. + +2002-02-06 Robert Anisko + + * data/bison.c++: Adjust the parser code. Fix some muscles that were + not expanded by m4. + +2002-02-05 Akim Demaille + + * data/bison.c++: Adjust to the M4 back end. + More is certainly needed. + +2002-02-05 Akim Demaille + + Give a try to M4 as a back end. + + * lib/readpipe.c: New, from wdiff. + * src/Makefile.am (DEFS): Define PKGDATADIR, not BISON_SIMPLE and + BISON_HAIRY. + * src/system.h (BISON_HAIRY, BISON_SIMPLE): Remove the DOS and VMS + specific values. Now it is m4 that performs the lookup. + * src/parse-skel.y: Remove. + * src/muscle_tab.c, src/muscle_tab.h (muscles_m4_output): New. + * src/output.c (actions_output, guards_output) + (token_definitions_output): No longer keeps track of the output + line number, hence remove the second argument. + (guards_output): Check against the guard member of a rule, not the + action member. + Adjust callers. + (output_skeleton): Don't look for the skeleton location, let m4 do + that. + Create `/tmp/muscles.m4'. This is temporary, a proper temporary + file will be used. + Invoke `m4' on m4sugar.m4, muscles.m4, and the skeleton. + (prepare): Given that for the time being changesyntax is not + usable in M4, rename the muscles using `-' to `_'. + Define `defines_flag', `output_parser_name' and `output_header_name'. + * src/output.h (actions_output, guards_output) + (token_definitions_output): Adjust prototypes. + * src/scan-skel.l: Instead of scanning the skeletons, it now + processes the output of m4: `__oline__' and `#output'. + * data/bison.simple: Adjust to be used by M4(sugar). + * tests/Makefile.am: Use check_SCRIPTS to make sure `bison' is up + to date. + * tests/bison.in: Use the secrete envvar `BISON_PKGDATADIR' + instead of the dead `BISON_SIMPLE' and `BISON_HAIRY'. + * data/m4sugar/m4sugar.m4, data/m4sugar/version.m4: New, + shamelessly stolen from CVS Autoconf. + +2002-02-05 Akim Demaille + + * lib/hash.c, lib/hash.h: Replace with Fileutils 4.1's version. + * configure.in: Check for the declarations of free and malloc. + * src/muscle_tab.c: Adjust. + +2002-02-05 Akim Demaille + + * src/muscle_tab.c (muscle_init): Don't default to NULL muscle + which have no values. + +2002-02-05 Akim Demaille + + * src/bison.simple, src/bison.hairy, src/bison.c++: Move to... + * data/: here. + +2002-01-29 Paul Eggert + + * src/bison.simple (YYSIZE_T): Do not define merely because + YYSTACK_USE_ALLOCA is nonzero or alloca or _ALLOCA_H are defined. + On some platforms, does not declare YYSTD (size_t). + +2002-01-27 Akim Demaille + + Fix `%nonassoc and eof'. + + * src/state.c (errs_dup): Aaaah! The failure was due to bytes + which were not properly copied! Replace + memcpy (res->errs, src->errs, src->nerrs); + with + memcpy (res->errs, src->errs, src->nerrs * sizeof (src->errs[0])); + !!! + * tests/regression.at (%nonassoc and eof): Adjust to newest + Autotest: `.' is not in the PATH. + +2002-01-27 Akim Demaille + + * tests/sets.at (AT_EXTRACT_SETS): New. + (Nullable): Use it. + (Firsts): New. + +2002-01-26 Akim Demaille + + * tests/actions.at, tests/calc.at, tests/headers.at, + * tests/torture.at: Adjust to the newest Autotest which no longer + forces `.' in the PATH. + +2002-01-25 Akim Demaille + + * tests/regression.at (%nonassoc and eof): New. + Suggested by Robert Anisko. + +2002-01-24 Akim Demaille + + Bison dumps core when trying to complain about broken input files. + Reported by Cris van Pelt. + + * src/lex.c (parse_percent_token): Be sure to set token_buffer. + * tests/regression.at (Invalid input: 1, Invalid input: 2): Merge + into... + (Invalid inputs): Strengthen: exercise parse_percent_token. + +2002-01-24 Robert Anisko + + * src/Makefile.am: Add bison.c++. + * src/bison.c++: New skeleton. + +2002-01-21 Paolo Bonzini + + * po/it.po: New. + +2002-01-21 Kees Zeelenberg + + * src/files.c (skeleton_find) [MSDOS]: Fix cp definition. + +2002-01-20 Marc Autret + + * src/files.c (compute_output_file_names): Fix + +2002-01-20 Marc Autret + + * tests/output.at: New test. + * src/files.c (compute_base_names): Don't map extensions when + the YACC flag is set, use defaults. + Reported by Evgeny Stambulchik. + +2002-01-20 Marc Autret + + * src/system.h: Need to define __attribute__ away for non-GCC + compilers as well (i.e., the vendor C compiler). + Suggested by Albert Chin-A-Young. + +2002-01-11 Tim Van Holder + + * lib/hash.h, lib/hash.c: Renamed __P to PARAMS and used the + canonical definition. + * src/system.h: Use the canonical definition for PARAMS (avoids + a conflict with the macro from lib/hash.h). + +2002-01-11 Akim Demaille + + * configure.in: Use AC_FUNC_STRNLEN. + Fixes the failures observed on AIX 4.3 by H.Merijn Brand. + +2002-01-09 Akim Demaille + + * src/files.c, src/files.h (output_infix): New. + (tab_extension): Remove. + (compute_base_names): Compute the former, drop the latter. + * src/output.c (prepare): Insert the muscles `output-infix', and + `output-suffix'. + * src/parse-skel.y (string, string.1): New. + (section.header): Use it. + (section.yacc): Remove. + (prefix): Remove too. + * src/scan-skel.l: Adjust. + * src/bison.simple, src/bison.hairy: Adjust. + +2002-01-09 Akim Demaille + + * configure.in (WERROR_CFLAGS): Compute it. + * src/Makefile.am (CFLAGS): Pass it. + * tests/atlocal.in (CFLAGS): Idem. + * src/files.c: Fix a few warnings. + (get_extension_index): Remove, unused. + +2002-01-08 Akim Demaille + + * src/getargs.c (AS_FILE_NAME): New. + (getargs): Use it to convert DOSish file names. + * src/files.c (base_name): Rename as full_base_name to avoid + clashes with `base_name ()'. + (filename_split): New. + (compute_base_names): N-th rewrite, using filename_split. + +2002-01-08 Akim Demaille + + * lib/basename.c, lib/dirname.h, lib/dirname.c, lib/memrchr.c: + New, stolen from the Fileutils 4.1. + * lib/Makefile.am (libbison_a_SOURCES): Adjust. + * configure.in: Check for the presence of memrchr, and of its + prototype. + +2002-01-07 Tim Van Holder + + * lib/hash.h (__P): Added definition for this macro. + * src/Makefile.am: Add parse-skel.c and scan-skel.c to + BUILT_SOURCES, to ensure they are generated first. + * src/parse-skel.y: Use YYERROR_VERBOSE instead of + %error-verbose to allow bootstrapping with bison 1.30x. + +2002-01-06 Akim Demaille + + * src/reader.c (parse_braces): Don't fetch the next char, the + convention is to fetch on entry. + * tests/torture.at (GNU Cim Grammar): Reintroduce their weird + 'switch' without a following semicolon. + * tests/regression.at (braces parsing): New. + +2002-01-06 Akim Demaille + + Bison is dead wrong in its RR conflict reports. + + * tests/torture.at (GNU Cim Grammar): New. + * src/conflicts.c (count_rr_conflicts): Fix. + +2002-01-06 Akim Demaille + + Creating package.m4 from configure.ac causes too many problems. + + * tests/Makefile.am (package.m4): Create it by hand, + AC_CONFIG_TESTDIR no longer does in the most recent CVS Autoconf. + +2002-01-06 Akim Demaille + + * src/Makefile.am (bison_SOURCES): Add parse-skel.h and + skeleton.h. + +2002-01-04 Paul Eggert + + * doc/bison.texinfo (Debugging): + Remove YYSTDERR; it's no longer defined or used. + Also, s/cstdio.h/cstdio/. + +2002-01-03 Akim Demaille + + * tests/bison.in, tests/atlocal.in: Adjust to CVS Autoconf. + +2002-01-03 Akim Demaille + + * src/parse-skel.y (process_skeleton): Don't bind the parser's + tracing code to --trace, wait for a better --trace option, with + args. + +2002-01-03 Akim Demaille + + * src/bison.simple (YYSTDERR): Remove, replace `stderr'. + The ISO C++ standard is extremely clear about it: stderr is + considered a macro, not a regular symbol (see table 94 `Header + synopsis', [lib.c.files] 27.8.2 C Library files). + Therefore std:: does not apply to it. It still does with fprintf. + Also, s/cstdio.h/cstdio/. + +2002-01-03 Akim Demaille + + * lib/quotearg.c: Use `#include "..."' instead of `#include <...>' + for non system headers. + +2002-01-02 Akim Demaille + + Equip the skeleton chain with location tracking, runtime trace, + pure parser and scanner. + + * src/parse-skel.y: Request a pure parser, locations, and prefix + renaming. + (%union): Having several members with the same type does not help + type mismatches, simplify. + (YYPRINT, yyprint): New. + (yyerror): ``Rename'' (there is a #define yyerror skel_error) as... + (skel_error): this. + Handle locations. + * src/scan-skel.l: Adjust to these changes. + * src/skeleton.h (LOCATION_RESET, LOCATION_LINES, LOCATION_STEP) + (LOCATION_PRINT, skel_control_t): New. + +2001-12-30 Akim Demaille + + * src/parse-skel.y: Get rid of the shift/reduce conflict: + replace `gb' with BLANKS. + * src/scan-skel.l: Adjust. + +2001-12-30 Akim Demaille + + * src/system.h: We don't need nor want bcopy. + Throw away MS-DOS crap: we don't need getpid. + * configure.in: We don't need strndup. It was even causing + problems: because Flex includes the headers *before* us, + _GNU_SOURCE is not defined by config.h, and therefore strndup was + not visible. + * lib/xstrndup.c: New. + * src/scan-skel.l: Use it. + Be sure to initialize yylval.muscle member when scanning a MUSCLE. + * src/parse-skel.y: Use %directives instead of #defines. + +2001-12-30 Akim Demaille + + * src/skeleton.h: New. + * src/output.c (output_parser, output_master_parser): Remove, dead + code. + * src/output.h (get_lines_number, actions_output, guards_output) + (token_definitions_output): Prototype them. + * src/parse-skel.y: Add the license notice. + Include output.h and skeleton.h. + (process_skeleton): Returns void, and takes a single parameter. + * src/scan-skel.l: Add the license notice. + Include skeleton.h. + Don't use %option yylineno: it seems that then Flex imagines + REJECT has been used, and therefore it won't reallocate its + buffers (which makes no other sense to me than a bug). It results + in warnings for `unused: yy_flex_realloc'. + +2001-12-30 Robert Anisko + + * src/muscle_tab.h (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING) + (MUSCLE_INSERT_PREFIX): ...to there. + * src/output.c (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING) + (MUSCLE_INSERT_PREFIX): Move from here... + + * src/bison.hairy: Add a section directive. Put braces around muscle + names. This parser skeleton is still broken, but Bison should not + choke on a bad muscle 'syntax'. + * src/bison.simple: Add a section directive. Put braces around muscle + names. + + * src/files.h (strsuffix, stringappend): Add declarations. + (tab_extension): Add declaration. + (short_base_name): Add declaration. + + * src/files.c (strsuffix, stringappend): No longer static. These + functions are used in the skeleton parser. + (tab_extension): New. + (compute_base_names): Use the computations done in this function + to guess if the generated parsers should have '.tab' in their + names. + (short_base_name): No longer static. + + * src/output.c (output_skeleton): New. + (output): Disable call to output_master_parser, and give a try to + a new skeleton handling system. + (guards_output, actions_output): No longer static. + (token_definitions_output, get_lines_number): No longer static. + + * configure.in: Use AM_PROG_LEX and AC_PROG_YACC. + + * src/Makefile.am (bison_SOURCES): Add scan-skel.l and + parse-skel.y. + + * src/parse-skel.y: New file. + * src/scan-skel.l: New file. + +2001-12-29 Akim Demaille + + %name-prefix is broken. + + * src/files.c (spec_name_prefix): Initialize to NULL, not to "yy". + Adjust all dependencies. + * tests/headers.at (export YYLTYPE): Strengthen this test: use + %name-prefix. + + Renaming yylval but not yylloc is not consistent. Now we do. + + * src/bison.simple: Prefix yylloc if used. + * doc/bison.texinfo (Decl Summary): Document that. + +2001-12-29 Akim Demaille + + * doc/bison.texinfo: Promote `%long-directive' over + `%long_directive'. + Remove all references to fixed-output-files, yacc is enough. + +2001-12-29 Akim Demaille + + * src/bison.simple: Define YYDEBUG and YYERROR_VERBOSE *after* the + user prologue. These are defaults. + * tests/actions.at (Mid-rule actions): Make sure the user can + define YYDEBUG and YYERROR_VERBOSE. + +2001-12-29 Akim Demaille + + * src/output.c (header_output): Don't forget to export YYLTYPE and + yylloc. + * tests/headers.at (export YYLTYPE): New, make sure it does. + * tests/regression.at (%union and --defines, Invalid CPP headers): + Move to... + * tests/headers.at: here. + +2001-12-29 Akim Demaille + + * src/gram.h (rule_s): Member `assoc' is of type `associativity'. + +2001-12-29 Akim Demaille + + * tests/actions.at (Mid-rule actions): Output on a single line + instead of several. + +2001-12-29 Akim Demaille + + * doc/bison.texinfo: Formatting changes. + +2001-12-29 Akim Demaille + + Don't store the token defs in a muscle, just be ready to output it + on command. Now possible via `symbols'. Fixes a memory leak. + + * src/output.c (token_definitions_output): New. + (output_parser, header_output): Use it. + * src/reader.c (symbols_save): Remove. + +2001-12-29 Akim Demaille + + * src/bison.simple: Do not provide a default for YYSTYPE and + YYLTYPE before the user's prologue. Otherwise it's hardly... a + default. + +2001-12-29 Akim Demaille + + Mid-rule actions are simply... ignored! + + * src/reader.c (readgram): Be sure to attach mid-rule actions to + the empty-rule associated to the dummy symbol, not to the host + rule. + * tests/actions.at (Mid-rule actions): New. + +2001-12-29 Akim Demaille + + Memory leak. + + * src/reader.c (reader): Free grammar. + +2001-12-29 Akim Demaille + + Memory leak. + + * src/LR0.c (new_itemsets): Don't allocate `shift_symbol' here, + since it allocates it for each state, although only one is needed. + (allocate_storage): Do it here. + +2001-12-29 Akim Demaille + + * src/options.h, src/options.c (create_long_option_table): Rename + as... + (long_option_table_new): this, with a clearer prototype. + (percent_table): Remove, unused, + * src/getargs.c (getargs): Adjust. + +2001-12-29 Akim Demaille + + * src/LR0.c, src/conflicts.c, src/lalr.c, src/lalr.h, src/output.c + * src/print.c, src/print_graph.c, src/state.h: Rename state_table + as states. + +2001-12-29 Akim Demaille + + * src/lalr.c (build_relations): Rename `states' as `states1'. + Sorry, I don't understand exactly what it is, no better name... + +2001-12-29 Akim Demaille + + * src/closure.c, src/conflicts.c, src/derives.c, src/gram.c + * src/gram.h, src/lalr.c, src/nullable.c, src/output.c, src/print.c + * src/print_graph.c, src/reader.c, src/reduce.c: Rename rule_table + as rules. + +2001-12-29 Akim Demaille + + * src/gram.c (rprec, rprecsym, rassoc): Remove, unused since long + ago. + +2001-12-29 Akim Demaille + + * src/reader.c, src/reader.h (user_toknums): Remove. + Adjust all users to use symbols[i]->user_token_number. + +2001-12-29 Akim Demaille + + * src/gram.c, src/gram.h (sprec, sassoc): Remove. + Adjust all users to use symbols[i]->prec or ->assoc. + +2001-12-29 Akim Demaille + + * src/reader.c, src/reader.h (tags): Remove. + Adjust all users to use symbols[i]->tag. + +2001-12-29 Akim Demaille + + * src/gram.h, src/gram.c (symbols): New, similar to state_table + and rule_table. + * src/reader.c (packsymbols): Fill this table. + Drop sprec. + * src/conflicts.c (resolve_sr_conflict): Adjust. + * src/reduce.c (reduce_grammar): Adjust: just sort symbols, a + single table. + Use symbols[i]->tag instead of tags[i]. + +2001-12-29 Akim Demaille + + * tests/calc.at (_AT_DATA_CALC_Y): Also use %union. + In addition, put a comment in there, to replace... + * tests/regression.at (%union and C comments): Remove. + +2001-12-29 Akim Demaille + + * tests/regression.at (Web2c Actions): Blindly move the actual + output as expected output. The contents *seem* right to me, but I + can't pretend reading perfectly parser tables... Nonetheless, all + the other tests pass correctly, the table look OK, even though the + presence of `$axiom' is to be noted: AFAICS it is useless (but + harmless). + +2001-12-29 Akim Demaille + + * src/reader.c (readgram): Don't add the rule 0 if there were no + rules read. In other words, add it _after_ having performed + grammar sanity checks. + Fixes the `tests/regression.at (Invalid input: 1)' Failure. + +2001-12-29 Akim Demaille + + * tests/regression.at (Web2c Report): Catch up: the rule 0 is now + visible, and some states have now a different number. + +2001-12-29 Akim Demaille + + * src/reader.c (readgram): Bind the initial rule's lineno to that + of the first rule. + * tests/regression.at (Rule Line Numbers, Unresolved SR Conflicts): + (Solved SR Conflicts): Adjust rule 0's line number. + +2001-12-29 Akim Demaille + + Fix the `GAWK Grammar' failure. + + * src/LR0.c (final_state): Initialize to -1 so that we do compute + the reductions of the first state which was mistakenly confused + with the final state because precisely final_state was initialized + to 0. + * tests/sets.at (Nullable): Adjust: state 0 does have lookaheads, + now noticed by Bison. + * tests/regression.at (Rule Line Numbers): Adjust: state 0 does + have a reduction on $default. + +2001-12-29 Akim Demaille + + * src/gram.c (ritem_print): Be sure to subtract 1 when displaying + rule line numbers. + * src/closure.c (print_closure): Likewise. + * src/derives.c (print_derives): Likewise. + * tests/sets.at (Nullable): Adjust: the rule numbers are correct + now. + +2001-12-29 Akim Demaille + + * src/lalr.c (lookaheads_print): New. + (lalr): Call it when --trace-flag. + * tests/sets.at (Nullable): Adjust: when tracing, the lookaheads + are dumped. + +2001-12-29 Akim Demaille + + * src/derives.c (print_derives): Be sure to use `>= 0', not `> 0', + when walking through ritem, even via rule->rhs. + * src/reduce.c (dump_grammar, useful_production, reduce_output) + (useful_production, useless_nonterminals): Likewise. + (reduce_grammar_tables): Likewise, plus update nritems. + * src/nullable.c (set_nullable): Likewise. + * src/lalr.c (build_relations): Likewise. + * tests/sets.at (Nullable): Adjust. + Fortunately, now, the $axiom is no longer nullable. + +2001-12-29 Akim Demaille + + * src/LR0.c (generate_states): Use nritems, not nitems, nor using + the 0-sentinel. + * src/gram.c (ritem_longest_rhs): Likewise. + * src/reduce.c (nonterminals_reduce): Likewise. + * src/print_graph.c (print_graph): Likewise. + * src/output.c (output_rule_data): Likewise. + * src/nullable.c (set_nullable): Likewise. + +2001-12-29 Akim Demaille + + * src/output.c: Comment changes. + +2001-12-27 Paul Eggert + + * src/bison.simple (YYSTACK_ALLOC, YYSIZE_T): Remove special + cases for non-GNU systems like AIX, HP-UX, SGI, Sun, and + Sparc, as they were causing more porting problems than the + (minor) performance improvement was worth. + + Also, catch up with 1.31's YYSTD. + +2001-12-27 Akim Demaille + + * src/output.c (output_gram): Rely on nritems, not the + 0-sentinel. See below. + Use -1 as separator, not 0. + * src/bison.simple (yyparse): Subtract 1 to the rule numbers. + Rely on -1 as separator in yyrhs, instead of 0. + * tests/calc.at (AT_CHECK_CALC): Now, the parsers no longer issue + twice `Now at end of input', therefore there are two lines less to + expect. + +2001-12-27 Akim Demaille + + * tests/regression.at (Unresolved SR Conflicts): + (Solved SR Conflicts, Rule Line Numbers): Adjust to the changes + below. + +2001-12-27 Akim Demaille + + * src/LR0.c (new_state): Recognize the final state by the fact it + is reached by eoftoken. + (insert_start_shifting_state, insert_eof_shifting_state) + (insert_accepting_state, augment_automaton): Remove, since now + these states are automatically computed from the initial state. + (generate_states): Adjust. + * src/print.c: When reporting a rule number to the user, substract + 1, so that the axiom rule is rule 0, and the first user rule is 1. + * src/reduce.c: Likewise. + * src/print_graph.c (print_core): For the time being, just as for + the report, depend upon --trace-flags to dump the full set of + items. + * src/reader.c (readgram): Once the grammar read, insert the rule + 0: `$axiom: START-SYMBOL $'. + * tests/set.at: Adjust: rule 0 is now displayed, and since the + number of the states has changed (the final state is no longer + necessarily the last), catch up. + +2001-12-27 Akim Demaille + + Try to make the use of the eoftoken valid. Given that its value + is 0 which was also used as a sentinel in ritem, (i) make sure >= 0 + is used instead of > 0 where appropriate, (ii), depend upon nritems + instead of the 0-sentinel. + + * src/gram.h, src/gram.c (nritems): New. + Expected to be duplication of nitems, but for the time being... + * src/reader.c (packgram): Assert nritems and nitems are equal. + * src/LR0.c (allocate_itemsets, new_itemsets): Adjust. + * src/closure.c (print_closure, print_fderives): Likewise. + * src/gram.c (ritem_print): Likewise. + * src/print.c (print_core, print_grammar): Likewise. + * src/print_graph.c: Likewise. + +2001-12-27 Akim Demaille + + * src/main.c (main): If there are complains after grammar + reductions, then output the report anyway if requested, then die. + * src/symtab.c (bucket_new): Initialize `value' to -1, not 0. + * src/reader.c (eoftoken): New. + (parse_token_decl): If the token being defined has value `0', it + is the eoftoken. + (packsymbols): No longer hack `tags' to insert `$' by hand. + Be sure to preserve the value of the eoftoken. + (reader): Make sure eoftoken is defined. + Initialize nsyms to 0: now eoftoken is created just like the others. + * src/print.c (print_grammar): Don't special case the eof token. + * src/regression.at: Adjust: `$' has value 0, not -1, which was a + lie anyway, albeit pleasant. + * tests/calc.at: Exercise error messages with eoftoken. + Change the grammar so that empty input is invalid. + Adjust expectations. + When yyungeting, be sure to use a valid yylloc: use last_yylloc. + +2001-12-27 Akim Demaille + + * configure.in: Check the protos of strchr ans strspn. + Replace strchr if needed. + * src/system.h: Provide the protos of strchr, strspn and memchr if + missing. + * lib/strchr.c: New. + * src/reader.c (symbols_save): Use strchr. + +2001-12-27 Akim Demaille + + * src/print.c, src/print_graph.c (escape): New. + Use it to quote the TAGS outputs. + * src/print_graph.c (print_state): Now errors are in red, and + reductions in green. + Prefer high to wide: output the state number on a line of its own. + +2001-12-27 Akim Demaille + + * src/state.h, src/state.c (reductions_new): New. + * src/LR0.c (set_state_table): Let all the states have a + `reductions', even if reduced to 0. + (save_reductions): Adjust. + * src/lalr.c (initialize_LA, initialize_lookaheads): Adjust. + * src/print.c (print_reductions, print_actions): Adjust. + * src/output.c (action_row): Adjust. + +2001-12-27 Akim Demaille + + * src/state.h, src/state.c (errs_new, errs_dup): New. + * src/LR0.c (set_state_table): Let all the states have an errs, + even if reduced to 0. + * src/print.c (print_errs, print_reductions): Adjust. + * src/output.c (output_actions, action_row): Adjust. + * src/conflicts.c (resolve_sr_conflict): Adjust. + +2001-12-27 Akim Demaille + + * src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL. + +2001-12-27 Akim Demaille + + * src/conflicts.c, src/conflicts.h (print_reductions): Move to... + * src/print.c: here. + (lookaheadset, shiftset): New, used as additional storage by + print_reductions. + (print_results): Adjust. + (print_shifts, print_gotos, print_errs): New, extracted from... + (print_actions): here. + * src/print_graph.c (print_actions): Remove dead code. + +2001-12-27 Akim Demaille + + * src/reader.c (copy_dollar, copy_at): Better checking of `n' in + `$n' and `@n'. + +2001-12-27 Akim Demaille + + * src/lalr.c (add_lookback_edge): Use state_t instead of ints. + (build_relations): Adjust. + +2001-12-27 Akim Demaille + + * src/lalr.c (set_goto_map): Remove a wrong but benign loop + duplication. + +2001-12-27 Akim Demaille + + * src/reader.c (packgram): Catch nitems overflows. + +2001-12-27 Akim Demaille + + * src/files.c, src/files.h (guard_obstack): Remove. + * src/output.c (output): Adjust. + * src/reader.c (parse_braces): New, factoring... + (copy_action, copy_guard): these two which are renamed as... + (parse_action, parse_guard): these. + As a voluntary consequence, using braces around guards is now + mandatory. + +2001-12-27 Akim Demaille + + * src/gram.h (rule_t): `guard' and `guard_line' are new members. + * src/reader.c (symbol_list): `guard' and `guard_line' are new + members. + (symbol_list_new): Adjust. + (copy_action): action_line is the first line, not the last. + (copy_guard): Just as for actions, store the `action' only, not + the switch/case/break flesh. + Don't parse the user action that might follow the guard, let... + (readgram): do it, i.e., now, there can be an action after a + guard. + In other words the guard is just explicitly optional. + (packgram): Adjust. + * src/output.c (guards_output): New. + (output_parser): Call it when needed. + (output): Also free the guard and attrs obstacks. + * src/files.c, src/files.h (obstack_save): Remove. + (output_files): Remove. + As a result, if one needs the former `.act' file, using an + appropriate skeleton which requires actions and guards is now + required. + * src/main.c (main): Adjust. + * tests/semantic.at: New. + * tests/regression.at: Use `input.y' as input file name. + Avoid 8+3 problems by requiring input.c when the test needs the + parser. + +2001-12-27 Akim Demaille + + * src/reader.c (symbol_list_new): Be sure to initialize all the + fields. + +2001-12-27 Akim Demaille + + All the hacks using a final pseudo state are now useless. + + * src/LR0.c (set_state_table): state_table holds exactly nstates. + * src/lalr.c (nLA): New. + (initialize_LA, compute_lookaheads, initialize_lookaheads): Use it + instead of lookaheadsp from the pseudo state (nstate + 1). + +2001-12-27 Akim Demaille + + * src/output.c (action_row, token_actions): Use a state_t instead + of a integer, and nlookaheads instead of the following state's + lookaheadsp. + +2001-12-27 Akim Demaille + + * src/conflicts.c (log_resolution, flush_shift) + (resolve_sr_conflict, set_conflicts, solve_conflicts) + (count_sr_conflicts, count_rr_conflicts, conflicts_output) + (conflicts_print, print_reductions): Use a state_t instead of an + integer when referring to a state. + As much as possible, depend upon nlookaheads, instead of the + `lookaheadsp' member of the following state (since lookaheads of + successive states are successive, the difference between state n + 1 + and n served as the number of lookaheads for state n). + * src/lalr.c (add_lookback_edge): Likewise. + * src/print.c (print_core, print_actions, print_state) + (print_results): Likewise. + * src/print_graph.c (print_core, print_actions, print_state) + (print_graph): Likewise. + * src/conflicts.h: Adjust. + +2001-12-27 Akim Demaille + + * src/bison.hairy: Formatting/comment changes. + ANSIfy. + Remove `register' indications. + Add plenty of `static'. + +2001-12-27 Akim Demaille + + * src/output.c (prepare): Drop the muscle `ntbase' which + duplicates ntokens. + * src/bison.simple: Formatting/comment changes. + Use YYNTOKENS only, which is documented, but not YYNTBASE, which + is an undocumented synonym. + +2001-12-22 Akim Demaille + + * src/output.c (output_table_data): Change the prototype to use + `int' for array ranges: some invocations do pass an int, not a + short. + Reported by Wayne Green. + +2001-12-22 Akim Demaille + + Some actions of web2c.y are improperly triggered. + Reported by Mike Castle. + + * src/lalr.c (traverse): s/F (i)[k] = F (j)[k]/F (j)[k] = F (i)[k]/. + * tests/regression.at (Web2c): Rename as... + (Web2c Report): this. + (Web2c Actions): New. + +2001-12-22 Akim Demaille + + Reductions in web2c.y are improperly reported. + Reported by Mike Castle. + + * src/conflicts.c (print_reductions): Fix. + * tests/regression.at (Web2c): New. + +2001-12-18 Akim Demaille + + Some host fail on `assert (!"foo")', which expands to + ((!"foo") ? (void)0 : __assert("!"foo."", __FILE__, __LINE__)) + Reported by Nelson Beebee. + + * src/output.c, src/vcg.c: Replace `assert (!"it succeeded")' with + `#define it_succeeded 0' and `assert (it_succeeded)'. + +2001-12-17 Marc Autret + + * src/bison.simple: Don't hard code the skeleton line and filename. + * src/output.c (output_parser): Rename 'line' as 'output_line'. + New line counter 'skeleton_line' (skeleton-line muscle). + +2001-12-17 Paul Eggert + + * NEWS, doc/bison.texinfo, doc/bison.1, doc/bison.rnh: Document that + YYDEBUG must be defined to a nonzero value. + + * src/bison.simple (yytname): Do not assume that the user defines + YYDEBUG to a properly parenthesized expression. + +2001-12-17 Akim Demaille + + * src/state.h (state_t): Rename lookaheads as lookaheadsp. + nlookaheads is a new member. + Adjust all users. + * src/lalr.h (nlookaheads): Remove this orphan declaration. + * src/lalr.c (initialize_lookaheads): Set nlookaheads for each + state. + +2001-12-17 Akim Demaille + + * src/files.h, src/files.c (open_files, close_files): Remove. + * src/main.c (main): Don't open/close files, nor invoke lex_free, + let... + * src/reader.c (reader): Do it. + +2001-12-17 Akim Demaille + + * src/conflicts.c (print_reductions): Formatting changes. + +2001-12-17 Akim Demaille + + * src/conflicts.c (flush_shift): Also adjust lookaheadset. + (flush_reduce): New. + (resolve_sr_conflict): Adjust. + +2001-12-17 Akim Demaille + + * src/output.c (output_obstack): Be static and rename as... + (format_obstack): this, to avoid any confusion with files.c's + output_obstack. + * src/reader.h (muscle_obstack): Move to... + * src/output.h: here, since it's defined in output.c. + +2001-12-17 Akim Demaille + + * src/output.c (action_row, save_column, default_goto) + (sort_actions, matching_state, pack_vector): Better variable + locality. + +2001-12-17 Akim Demaille + + * src/output.c: Various formatting changes. + +2001-12-17 Akim Demaille + + * src/files.c (output_files): Free the output_obstack. + * src/main.c (main): Call print and print_graph conditionally. + * src/print.c (print): Work unconditionally. + * src/print_graph.c (print_graph): Work unconditionally. + * src/conflicts.c (log_resolution): Output only if verbose_flag. + +2001-12-16 Marc Autret + + * src/output.c (actions_output): Fix. When we use %no-lines, + there is one less line per action. + +2001-12-16 Marc Autret + + * src/bison.simple: Remove a useless #line directive. + s/#line %%line %%skeleton/#line %%line "%%parser-file-name"/'. + * src/output.c (get_lines_number): New. + (output_parser): Adjust, now takes care about the lines of a + output muscles. + Fix line numbering. + (actions_output): Computes the number of lines taken by actions. + (output_master_parser): Insert new skeleton which is the name of + the output parser file name. + +2001-12-15 Marc Autret + + * src/bison.simple [YYERROR_VERBOSE]: Restore backward compatibility. + +2001-12-15 Marc Autret + + * src/output.c (output_gram): Keep track of the hairy one. + +2001-12-15 Akim Demaille + + Make `make distcheck' work. + + * lib/Makefile.am (INCLUDES): Add top_srcdir/intl, since hash uses + system.h which uses libgettext.h. + +2001-12-15 Akim Demaille + + * src/nullable.c (set_nullable): Useless rules must be skipped, + otherwise, since we range over their symbols, we might look at a + nonterminal which no longer ``exists'', i.e., it is not counted in + `nvars', hence we overflow our arrays. + +2001-12-15 Akim Demaille + + The header can also be produced directly, without any obstack! + Yahoo! + + * src/files.c, src/files.h (defines_obstack): Remove. + (compute_header_macro): Global. + (defines_obstack_save): Remove. + * src/reader.c (parse_union_decl): No longer output to + defines_obstack: its content can be found in the `stype' muscle + anyway. + (output_token_translations): Merge into... + (symbols_output): this. + Rename as... + (symbols_save): this. + (reader): Adjust. + * src/output.c (header_output): New. + (output): Call it. + +2001-12-15 Akim Demaille + + * src/reader.c (parse_union_decl): Instead of handling two obstack + simultaneously, use one to define the `stype' muscle, and use the + value of the latter to fill defines_obstack. + (copy_comment): Remove. + (copy_comment2): Work for a single obstack. + Rename as... + (copy_comment): this. + +2001-12-15 Akim Demaille + + * src/lex.c, src/lex.h (xgetc): No longer static. + * src/reader.c (parse_union_decl): Revamp. + +2001-12-15 Akim Demaille + + Still making progress in separating Bison into (i) input, (ii) + process, (iii) output: now we can directly output the parser file + without using table_obstack at all. + + * src/files.c, src/files.h (table_obstack): Bye bye. + (parser_file_name): New. + * src/files.c (compute_output_file_names): Compute it. + * src/output.c (actions_output, output_parser) + (output_master_parser): To a file instead of an obstack. + +2001-12-15 Akim Demaille + + Attach actions to rules, instead of pre-outputting them to + actions_obstack. + + * src/gram.h (rule_t): action and action_line are new members. + * src/reader.c (symbol_list): Likewise. + (copy_action): Save the actions within the rule. + (packgram): Save them in rule_table. + * src/output.c (actions_output): New. + (output_parser): Use it on `%%actions'. + (output_rule_data): Don't free rule_table. + (output): Do it. + (prepare): Don't save the `action' muscle. + * src/bison.simple: s/%%action/%%actions/. + +2001-12-15 Akim Demaille + + * src/reader.c (copy_action): When --yacc, don't append a `;' + to the user action: let it fail if lacking. + Suggested by Arnold Robbins and Tom Tromey. + +2001-12-14 Akim Demaille + + * src/lex.c (literalchar): Simply return the char you decoded, non + longer mess around with obstacks and int pointers. + Adjust all callers. + +2001-12-14 Akim Demaille + + * src/lex.c (literalchar): Don't escape the special characters, + just decode them, and keep them as char (before, eol was output as + the 2 char string `\n' etc.). + * src/output.c (output_rule_data): Use quotearg to output the + token strings. + +2001-12-13 Paul Eggert + + * src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE): + Do not infringe on the global user namespace when using C++. + (YYFPRINTF, YYSTDERR): New macros, needed for the above. + All uses of `fprintf' and `stderr' changed. + + * doc/bison.texinfo: Document YYFPRINTF, YYSTDERR. + +2001-12-13 Akim Demaille + + The computation of nullable is broken: it doesn't handle empty + RHS's properly. + + * tests/torture.at (GNU AWK Grammar): New. + * tests/sets.at (Nullable): New. + * src/nullable.c (set_nullable): Instead of blindly looping over + `ritems', loop over the rules, and then over their rhs's. + + Work around Autotest bugs. + + * src/warshall.c (bitmatrix_print): Don't use `+--+' as table + frame, because Autotest understand lines starting with a `+' as + traces from the shell. Then, they are not processed properly. + Admittedly an Autotest bug, but we don't have time to wait for + Autotest to catch up. + * tests/regression.at (Broken Closure): Adjust to the new table + frames. + Move to... + * tests/sets.at: here. + +2001-12-13 Akim Demaille + + * src/closure.c (closure): Use nrules instead of playing tricks + with BITS_PER_WORD. + +2001-12-13 Akim Demaille + + * src/print.c (print_actions): Output the handling of `$' as the + traces do: shifting the token EOF. Before EOF was treated as a + nonterminal. + * tests/regression.at: Adjust some tests. + * src/print_graph.c (print_core): Complete the set of items via + closure. The next-to-final and final states are still unsatisfying, + but that's to be addressed elsewhere. + No longer output the rule numbers, but do output the state number. + A single loop for the shifts + gotos is enough, but picked a + distinct color for each. + (print_graph): Initialize and finalize closure. + +2001-12-13 Akim Demaille + + * src/reader.c (readgram): Remove dead code, an strip useless + braces. + (get_type): Remove, unused. + +2001-12-12 Akim Demaille + + * src/complain.h, src/complain.c: Remove error_one_per_line, rely + on that of lib/error.c. + +2001-12-12 Akim Demaille + + Some hosts don't like `/' in includes. + + * src/system.h: Include libgettext.h without qualifying the path. + * src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove + $(top_srcdir). + +2001-12-11 Marc Autret + + * src/output.c (output_parser): Remove useless muscle. + +2001-12-11 Marc Autret + + * src/bison.simple: Remove #line just before %%epilogue. It + is now handled in ... + * src/reader.c (read_additionnal_code): Add the output of a + #line for the epilogue. + +2001-12-10 Marc Autret + + * src/reader.c (copy_definition): Re-use CPP-outed code which + replace precedent remove. + * src/bison.simple: Remove #line before %%prologue because + %%input-line is wrong at this time. + +2001-12-10 Marc Autret + + * src/reader.c (symbols_output): Clean up. + * src/output.c (output_gram, output): Clean up. + +2001-12-10 Akim Demaille + + * src/lalr.c (initialize_lookaheads): New. Extracted from... + * src/LR0.c (set_state_table): here. + * src/lalr.c (lalr): Call it. + +2001-12-10 Akim Demaille + + * src/state.h (shifts): Remove the `number' member: shifts are + attached to state, hence no longer need to be labelled with a + state number. + +2001-12-10 Akim Demaille + + Now that states have a complete set of members, the linked list of + shifts is useless: just fill directly the state's shifts member. + + * src/state.h (shifts): Remove the `next' member. + * src/LR0.c (first_state, last_state): Remove. + Adjust the callers. + (augment_automaton): Don't look for the shifts that must be added + a shift on EOF: it is those of the state we looked for! But now, + since shifts are attached, it is no longer needed to looking + merely by its id: its number. + +2001-12-10 Akim Demaille + + * src/LR0.c (augment_automaton): Better variable locality. + Remove an impossible branch: if there is a state corresponding to + the start symbol being shifted, then there is shift for the start + symbol from the initial state. + +2001-12-10 Akim Demaille + + * src/LR0.c (augment_automaton): Call `insert_eof_shifting_state' + only when appropriate: when insert_start_shifting_state' is not + invoked. + * tests/regression.at (Rule Line Numbers): Adjust. + +2001-12-10 Akim Demaille + + * src/LR0.c (augment_automaton): Now that all states have shifts, + merge the two cases addition shifts to the initial state. + +2001-12-10 Akim Demaille + + * src/lalr.c (set_state_table): Move to... + * src/LR0.c: here. + * src/lalr.c (lalr): Don't call it... + * src/LR0.c (generate_states): do it. + * src/LR0.h (first_state): Remove, only the table is used. + +2001-12-10 Akim Demaille + + * src/LR0.h (first_shift, first_reduction): Remove. + * src/lalr.c: Don't use first_shift: find shifts through the + states. + +2001-12-10 Akim Demaille + + * src/LR0.c: Attach shifts to states as soon as they are + computed. + * src/lalr.c (set_state_table): Instead of assigning shifts to + state, just assert that the mapping was properly done. + +2001-12-10 Akim Demaille + + * src/LR0.c (insert_start_shift): Rename as... + (insert_start_shifting_state): this. + (insert_eof_shifting_state, insert_accepting_state): New. + (augment_automaton): Adjust. + Better locality of the variables. + When looking if the start_symbol is shifted from the initial + state, using `while (... symbol != start_symbol ...)' sounds + better than `while (... symbol < start_symbol ...)': If fail + to see how the order between symbols could be relevant! + +2001-12-10 Akim Demaille + + * src/getargs.h: Don't declare `spec_name_prefix' and + `spec_file_prefix', declared by src/files.h. + * src/files.c, src/files.h: Default for spec_name_prefix is "yy". + * src/muscle_tab.c (muscle_init): Default prefix to NULL. + * src/output.c (prepare): Adjust. + * src/reader.c (symbols_output): Likewise. + * src/vmsgetargs.c: Vaguely adjust, but who cares? + +2001-12-10 Akim Demaille + + * src/muscle_tab.c (muscle_init): NULL is a better default than + `"0"'. + +2001-12-10 Akim Demaille + + * src/reader.c (reader): Calling symbols_output once is enough. + +2001-12-10 Akim Demaille + + Now that states have a complete set of members, the linked list of + reductions is useless: just fill directly the state's reductions + member. + + * src/state.h (struct reductions): Remove member `number' and + `next'. + * src/LR0.c (first_reduction, last_reduction): Remove. + (save_reductions): Don't link the new reductions, store them in + this_state. + * src/lalr.c (set_state_table): No need to attach reductions to + states, it's already done. + * src/output.c (output_actions): No longer free the shifts, then + the reductions, then the states: free all the states and their + members. + +2001-12-10 Akim Demaille + + * src/options.c (OPTN, DRTV, BOTH): New. + (option_table): Use them. + + * src/muscle_tab.c: Don't include xalloc.h and string.h: that's + the job of system.h. + * src/options.c: Don't include stdio.h and xalloc.h for the same + reasons. + +2001-12-10 Akim Demaille + + * src/output.c (output, prepare): Make sure the values of the + muscles `action' and `prologue' are 0-terminated. + +2001-12-10 Akim Demaille + + Clean up GCC warnings. + + * src/reader.c (copy_action): `buf' is not used. + (parse_skel_decl): Be static. + * src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'. + * src/options.h (create_long_option_table): Have a real prototype. + * lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete) + (hash_delete_at): Return const void *. + Adjust casts to preserve the const. + +2001-12-10 Akim Demaille + + * configure.in: Require 2.52g. + M4 is not needed, but AUTOM4TE is. + * m4/m4.m4: Remove. + * tests/Makefile.am: Adjust. + +2001-12-10 Akim Demaille + + One structure for states is enough, even though theoretically + there are LR(0) states and LALR(1) states. + + * src/lalr.h (state_t): Remove. + (state_table): Be state_t **, not state_t *. + * src/state.h (core, CORE_ALLOC): Rename as... + (state_t, STATE_ALLOC): this. + Add the LALR(1) members: shifts, reductions, errs. + * src/LR0.c (state_table): Rename as... + (state_hash): this, to avoid name clashes with the global + `state_table'. + * src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c + * src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust. + +2001-12-10 Akim Demaille + + Bison dumps core on bash.y. + Reported by Pascal Bart. + + * src/warshall.c (bitmatrix_print): New. + (TC): Use it. + When performing a transitive closure R(i, j) && R(j, k) => R(i, k), + j must be the outer loop. + * tests/regression.at (Broken Closure): New. + +2001-12-05 Akim Demaille + + * tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and + its argument. + Reported by Peter Hamorsky. + +2001-12-05 Akim Demaille + + * src/conflicts.c (err_table): Remove. + (resolve_sr_conflict): Adjust. + * src/lalr.h (state_t.reduction_table, state_t.shift_table): + Rename as... + (state_t.reductions, state_t.shifts): this. + +2001-12-05 Akim Demaille + + * src/reduce.c (reduce_grammar_tables): No longer disable the + removal of useless rules via CPP but via `if (0)', so that the + compiler still check the code is valid. + For instance, it should have noticed `rline' no longer exists: use + the `line' member of rule_t. + * src/gram.c (dummy, rline): Remove, unused. + +2001-12-05 Akim Demaille + + * src/output.c (pack_vector): Use assert, not berror. + * src/main.c (berror): Remove, unused. + +2001-12-05 Akim Demaille + + New experimental feature: if --verbose --trace output all the + items of a state, not only its kernel. + + * src/print.c (print_core): If `trace_flag', then invoke closure + before outputting the items of the state (print_core is no longer + a correct name them). + (print_results): Invoke new_closure/free_closure if needed. + +2001-12-05 Akim Demaille + + * src/LR0.c (new_itemsets): Use nshifts only, not shiftcount. + * src/closure.c, src/closure.h (itemsetsize): Rename as... + (nitemset): for consistency with the rest of the project. + +2001-12-05 Akim Demaille + + * src/closure.c (print_closure): Improve. + (closure): Use it for printing input and output. + +2001-12-05 Akim Demaille + + * src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are + indexed by nonterminals. + +2001-12-05 Akim Demaille + + * src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of + what it was!). + * src/warshall.h: Remove accidental duplication of the content. + +2001-12-05 Akim Demaille + + * src/closure.c (set_fderives): De-obfuscate. + +2001-12-05 Akim Demaille + + * src/closure.c (print_firsts, print_fderives): De-obfuscate. + +2001-12-05 Akim Demaille + + * src/closure.c (set_firsts): De-obfuscate. + +2001-12-05 Akim Demaille + + * src/output.c (action_row): De-obfuscate + using the good o' techniques: arrays not pointers, variable + locality, BITISSET, RESETBIT etc. + +2001-12-05 Akim Demaille + + Pessimize the code to simplify it: from now on, all the states + have a valid SHIFTS, which NSHIFTS is possibly 0. + + * src/LR0.c (shifts_new): Be global and move to.. + * src/state.c, src/state.h: here. + * src/conflicts, src/lalr.c, src/output.c, src/print.c, + * src/print_graph: Adjust. + +2001-12-05 Akim Demaille + + * src/state.h (SHIFT_DISABLE, SHIFT_IS_DISABLED): New. + * src/conflicts.c: Use it. + Restore a few missing `if (!SHIFT_IS_DISABLED)' which were + incorrectly ``simplified''. + +2001-12-05 Akim Demaille + + * src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate + using the good o' techniques: arrays not pointers, variable + locality, BITISSET, RESETBIT etc. + +2001-12-05 Akim Demaille + + * src/state.h (SHIFT_SYMBOL): New. + * src/conflicts.c: Use it to deobfuscate. + +2001-12-05 Akim Demaille + + * src/conflicts.c (count_sr_conflicts, count_rr_conflicts) + (print_reductions): De-obfuscate using the good o' techniques: + arrays not pointers, variable locality, BITISSET. + +2001-12-05 Akim Demaille + + * src/conflicts.c (print_reductions): Arrays, not pointers. + Use BITISSET. + +2001-12-05 Akim Demaille + + * src/conflicts.c (print_reductions): Pessimize, but clarify. + +2001-12-05 Akim Demaille + + * src/conflicts.c (print_reductions): Improve variable locality. + +2001-12-05 Akim Demaille + + * src/conflicts.c (print_reductions): Pessimize, but clarify. + +2001-12-05 Akim Demaille + + * src/conflicts.c (print_reductions): Improve variable locality. + +2001-12-05 Akim Demaille + + * src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New. + * src/lalr.c: Use them. + +2001-12-05 Akim Demaille + + * src/LR0.c (augment_automaton): Formatting changes. + Better variable locality. + +2001-12-05 Akim Demaille + + * src/lalr.c (matrix_print): New. + (transpose): Use it. + Use arrays instead of pointers. + +2001-12-05 Akim Demaille + + * src/lalr.c (maxrhs): Move to... + * src/gram.c, src/gram.h (ritem_longest_rhs): here. + * src/lalr.c (build_relations): Adjust. + +2001-12-05 Akim Demaille + + * src/lalr.c (transpose): Free the memory allocated to the + argument, as it is replaced by the results by the unique caller. + (build_relations): Merely invoke transpose: it handles the memory + deallocation. + Improve variable locality. + Avoid variables used as mere abbreviations. + (compute_lookaheads): Use arrays instead of pointers. + +2001-12-05 Akim Demaille + + * src/lalr.c (initialize_F): Improve variable locality. + Avoid variables used as mere abbreviations. + +2001-12-05 Akim Demaille + + * src/derives.c (print_derives): Display the ruleno. + * src/lalr.c (initialize_F, transpose): Better variable locality + to improve readability. + Avoid variables used as mere abbreviations. + +2001-12-05 Akim Demaille + + * src/lalr.c (traverse): Use arrays instead of pointers. + +2001-12-05 Akim Demaille + + * src/nullable.c (set_nullable): Use a for loop to de-obfuscate + the handling of squeue. + `symbol >= 0' is wrong now, use `rule_table[ruleno].useful'. + +2001-12-05 Akim Demaille + + Because useless nonterminals are now kept alive (instead of being + `destroyed'), we now sometimes examine them, and store information + related to them. Hence we need to know their number, and adjust + memory allocations. + + * src/reduce.c, src/reduce.h (nuseless_nonterminals): No longer + static. + * src/LR0.c (allocate_itemsets): The memory allocated to + `symbol_count' was used for two different purpose: once to count + the number of occurrences of each symbol, and later reassigned to + `shift_symbol', containing the symbol that can be shifted from a + given state. + Deobfuscate, i.e., allocate, use and free `symbol_count' here + only, and... + (new_itemsets): Allocate `shift_symbol' here. + (allocate_itemsets): symbol_count includes useless nonterminals. + Make room for them. + (free_storage): Use `free', not `XFREE', for pointers that cannot + be null. + +2001-12-05 Akim Demaille + + * src/nullable.c (set_nullable): Deobfuscate the handling of + ritem. + `symbol >= 0' is wrong now, use `rule_table[ruleno].useful'. + +2001-12-05 Akim Demaille + + * src/gram.c, src/gram.h (ritem_print): New. + * src/gram.c (dummy): Remove, now there is actual code in gram.c. + (This useless function was defined only to work around VMS linkers + that can't handle compilation units with variables only). + * src/reduce.c (dump_grammar): Use it to trace the construction of + ritem. + +2001-12-04 Paul Eggert + + * src/bison.simple (union yyalloc): Change member names + to be the same as the stack names. + (yyparse): yyptr is now union yyalloc *, not char *. + (YYSTACK_RELOCATE): Likewise. This avoids a GCC warning, + and may generate better code on some machines. + (yystpcpy): Use prototype if __STDC__ is defined, not just + if __cplusplus is defined. + +2001-11-30 Akim Demaille + + * configure.in (WARNING_CFLAGS): Add -Werror when possible. + (CFLAGS): Do not include the WARNING_CFLAGS here, since GNU + Gettext doesn't compile cleanly, and dies with -Werror. + * src/Makefile.am, lib/Makefile.am, tests/atlocal.in (CFLAGS): + Include WARNING_CFLAGS here. + * lib/xstrdup.c: Include xalloc.h, so that xstrdup be declared + before being defined. + +2001-11-27 Paul Eggert + + * lib/quotearg.h (quotearg_n, quotearg_n_style): + First arg is int, not unsigned. + * lib/quotearg.c (quotearg_n, quotearg_n_style): Likewise. + (SIZE_MAX, UINT_MAX): New macros. + (quotearg_n_options): Abort if N is negative. + Avoid overflow check on hosts where size_t is 64 bits and int + is 32 bits, as overflow is impossible there. + Fix off-by-one typo that caused unnecessary reallocation. + +2001-11-29 Paul Eggert + + Name space cleanup in generated parser. + + * doc/bison.texinfo (Bison Parser): Discuss system headers + and their effect on the user name space. + + * src/bison.simple: + (YYSTACK_ALLOC, YYSTACK_FREE, union yyalloc, YYSTACK_GAP_MAX, + YYSTACK_BYTES, YYSTACK_RELOCATE): Do not define unless necessary, + i.e. unless ! defined (yyoverflow) || defined (YYERROR_VERBOSE). + + (YYSIZE_T): New macro. Use it instead of size_t, to avoid infringing + on user names when possible. + + (YYSTACK_USE_ALLOCA): Do not define; just use any existing defn. + Simplify test for whather exists. + + (): Include if we will use malloc, and if standard C or C++. + + (): Include if YYDEBUG. + + (yymemcpy): Renamed from __yy_memcpy. Do not define unless + ! defined (yyoverflow) && ! defined (yymemcpy). + + (yymemcpy, yyparse): Rename local variables as needed so that + they all begin with 'yy'. + + (yystrlen, yystpcpy): New functions. + + (YY_DECL_NON_LSP_VARIABLES): Renamed from _YY_DECL_VARIABLES. + All uses changed. + + (yyparse): size_t -> YYSIZE_T. Use yystrlen and yystpcpy + instead of relying on string.h functions. Use YYSTACK_ALLOC + and YYSTACK_FREE instead of malloc and free. + +2001-11-30 Akim Demaille + + * src/bison.simple (YYSTYPE, YYLTYPE): Move their definitions + before their first uses. + (YYBISON, YYPURE): Move to the top of the output. + +2001-11-30 Akim Demaille + + * tests/reduce.at (Useless Nonterminals): Fix. + +2001-11-30 Akim Demaille + + * src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty + if body instead of `;' to pacify GCC's warnings. + +2001-11-30 Akim Demaille + + Instead of mapping the LHS of unused rules to -1, keep the LHS + valid, but flag the rules as invalid. + + * src/gram.h (rule_t): `useful' is a new member. + * src/print.c (print_grammar): Adjust. + * src/derives.c (set_derives): Likewise. + * src/reader.c (packgram, reduce_output): Likewise. + * src/reduce.c (reduce_grammar_tables): Likewise. + * tests/reduce.at (Underivable Rules, Useless Rules): New. + +2001-11-30 Akim Demaille + + * src/reduce.c (reduce_output): Formatting changes. + * src/print.c (print_results, print_grammar): Likewise. + * tests/regression.at (Rule Line Numbers) + (Solved SR Conflicts, Unresolved SR Conflicts): Adjust. + +2001-11-30 Akim Demaille + + * src/reduce.c (nonterminals_reduce): Instead of throwing away + useless nonterminals, move them at the end of the symbol arrays. + (reduce_output): Adjust. + * tests/reduce.at (Useless Nonterminals): Adjust. + +2001-11-30 Akim Demaille + + * src/reduce.c: Various comment/formatting changes. + (nonterminals_reduce): New, extracted from... + (reduce_grammar_tables): here. + (reduce_grammar): Call nonterminals_reduce. + +2001-11-29 Paul Eggert + + * src/bison.simple (YYSTACK_REALLOC): Remove. + (YYSTACK_ALLOC): Resurrect this macro, with its old meaning. + (YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE): + New macros. + (union yyalloc): New type. + (__yy_memcpy): Last arg is size_t, not unsigned int, to remove + an arbitrary restriction on hosts where size_t is wider than int. + + (yyparse): Don't dump core if alloca or malloc fails; instead, report + a parser stack overflow. Allocate just one block of memory for all + three stacks, instead of allocating three blocks; this typically is + faster and reduces fragmentation. + + Do not limit the number of items in the stack to a value that fits + in 'int', as this is an arbitrary limit on hosts with 64-bit + size_t and 32-bit int. + +2001-11-29 Marc Autret + + * tests/calc.at [AT_DATA_CALC_Y]: Use %error-verbose instead + of defining YYERROR_VERBOSE. + [AT_DATA]: $4 is now out of C declarations in the prologue. + +2001-11-28 Marc Autret + + * src/reader.c (parse_dquoted_param): New. + (parse_skel_decl): Use it. + * src/lex.h: Add its prototype. + * src/lex.c (literalchar): Become not static. + +2001-11-28 Marc Autret + + * src/output.h: And put its extern declaration here. + * src/output.c (error_verbose): Define here. + (prepare): Echo name modification. + * src/getargs.h: Clean its extern declaration. + * src/getargs.c (error_verbose_flag): Remove. + (getargs): Remove case 'e'. + * src/options.c (option_table): 'error-verbose' is now seen as simple + percent option. + Include output.h. + + * src/reader.c (read_declarations): Remove case tok_include. + (parse_include_decl): Remove. + * src/lex.h (token_t): Remove tok_include. + * src/options.c (option_table): 'include' is now a simple command line + option. + +2001-11-28 Marc Autret + + * src/bison.simple: Adjust muscle names. + * src/muscle_tab.c (muscle_init): Also rename the muscles. + * src/output.c (prepare): s/_/-/ for the muscles names. + (output_parser): When scanning for a muscle, allow '-' instead of '_'. + +2001-11-28 Marc Autret + + * src/bison.simple: Fix debug. + [YYERROR_VERBOSE]: Re-integrate as an internal macro. + +2001-11-28 Akim Demaille + + * src/LR0.c (shifts_new): New. + (save_shifts, insert_start_shift, augment_automaton): Use it. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): `b' and `ruleno' denote the same value: + keep ruleno only. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): Instead of looping over word in array + then bits in words, loop over bits in array. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): No longer optimize the special case + where all the bits of `ruleset[r]' are set to 0, to make the code + clearer. + +2001-11-28 Akim Demaille + + * src/closure.c (closure): `r' and `c' are new variables, used to + de-obfuscate accesses to RULESET and CORE. + +2001-11-28 Akim Demaille + + * src/reduce.c (reduce_print): Use ngettext. + (dump_grammar): Improve the trace accuracy. + +2001-11-28 Akim Demaille + + * src/reduce.c (dump_grammar): Don't translate trace messages. + +2001-11-28 Akim Demaille + + * tests/reduce.at (Useless Terminals, Useless Nonterminals): New. + * src/reduce.c (reduce_grammar_tables): Do not free useless tags, + as all tags are free'ed afterwards. + From Enrico Scholz. + +2001-11-27 Paul Eggert + + * src/bison.simple (YYSTACK_REALLOC): Fix typo that caused us to + use alloca when we didn't want to, and vice versa. + +2001-11-27 Marc Autret + + * src/muscle_tab.c (muscle_init): Remove 'verbose' muscle + initialization. + * src/output.c (prepare): Remove its update. + +2001-11-27 Marc Autret + + * tests/torture.at [AT_DATA]: Remove YYERROR_VERBOSE definition. + Use %error-verbose. + +2001-11-27 Marc Autret + + * src/bison.simple: Remove YYERROR_VERBOSE using. + Use %%error_verbose. + (yyparse): Likewise. + * src/output.c (prepare): Give its final value. + * src/muscle_tab.c (muscle_init): Init new muscle 'error_verbose'. + * src/getargs.h: Add its extern declaration. + * src/getargs.c (error_verbose_flag): New int. + (getargs): Update to catch new case. + * src/options.c (option_table): 'error-verbose' is a new option. + (shortopts): Update. + +2001-11-27 Akim Demaille + + * src/system.h: Use intl/libgettext.h. + * src/Makefile.am (INCLUDES): Add -I $(top_srcdir). + +2001-11-27 Akim Demaille + + * tests/torture.at (Exploding the Stack Size with Malloc): + s/YYSTACK_USE_ALLOCA_ALLOCA/YYSTACK_USE_ALLOCA/. + +2001-11-27 Akim Demaille + + * src/files.c: Include error.h. + Reported by Hans Aberg. + +2001-11-26 Marc Autret + + * src/reader.c (parse_include_decl): New, not yet implemented. + (read_declarations): Add case tok_include. + * src/getargs.h (include): Add its extern definition. + * src/getargs.c (include): New const char *. + (getargs): Add case '-I'. + * src/options.c (option_table): Add include as command line and + percent option. + * src/lex.h (token_t): Add tok_include. + +2001-11-26 Akim Demaille + + * src/reader.c (readgram): Make sure rules for mid-rule actions + have a lineno equal to that of their host rule. + Reported by Hans Aberg. + * tests/regression.at (Rule Line Numbers): New. + +2001-11-26 Akim Demaille + + * src/LR0.c (allocate_itemsets): kernel_size contains ints, not + size_ts. + +2001-11-26 Akim Demaille + + * src/complain.c, src/complain.h (error): Remove, provided by + lib/error.[ch]. + +2001-11-26 Akim Demaille + + * src/reader.c (read_declarations): Don't abort on tok_illegal, + issue an error message. + * tests/regression.at (Invalid %directive): New. + Reported by Hans Aberg. + +2001-11-26 Akim Demaille + + * configure.in: Invoke AC_FUNC_OBSTACK and AC_FUNC_ERROR_AT_LINE. + * lib/Makefile.am (libbison_a_SOURCES): Adjust. + +2001-11-26 Akim Demaille + + * src/conflicts.c (conflicts_print): Don't complain at all when + there are no reduce/reduce conflicts, and as many shift/reduce + conflicts as expected. + * tests/regression.at (%expect right): Adjust. + +2001-11-23 Akim Demaille + + * lib/alloca.c: Update, from fileutils. + +2001-11-23 Akim Demaille + + * lib/Makefile.am (libbison_a_LIBADD): Add @ALLOCA@. + +2001-11-23 Akim Demaille + + * src/system.h: Include alloca.h. + * src/main.c (main) [C_ALLOCA]: Call alloca (0). + +2001-11-23 Akim Demaille + + * src/print_graph.c (print_actions): Remove `rule', unused. + * src/LR0.c (kernel_size): Contain `int' instead of `size_t' to + pacify GCC's signed < unsigned warnings. + * src/closure.c (itemsetsize): Likewise. + * src/reader.c (symbol_list_new): Static. + +2001-11-23 Akim Demaille + + Attaching lineno to buckets is stupid, since only one copy of each + symbol is kept, only the line of the first occurrence is kept too. + + * src/symtab.h, src/symtab.c (bucket): Remove the line member. + * src/reader.c (rline_allocated): Remove, unused. + (symbol_list): Have a `line' member. + (symbol_list_new): New. + (readgram): Use it. + * src/print.c (print_grammar): Output the rule line numbers. + * tests/regression.at (Solved SR Conflicts) + (Unresolved SR Conflicts): Adjust. + Reported by Hans Aberg. + +2001-11-22 Marc Autret + + * src/bison.simple [YYERROR_VERBOSE]: Force its value to be 1 or 0. + +2001-11-22 Marc Autret + + * src/muscle_tab.c (muscle_init): Remove initialization of + skeleton muscle. + * src/output.c (output_master_parser): Do it here. + +2001-11-20 Akim Demaille + + * po/sv.po: New. + * configure.in (ALL_LINGUAS): Adjust. + * po/POTFILE.in: Remove `nullable.c' and `derives.c' which no + longer contains strings to translate. + +2001-11-19 Akim Demaille + + * src/conflicts.c (conflicts_print): Add a missing \n. + +2001-11-19 Akim Demaille + + * src/nullable.c (nullable_print): New. + (set_nullable): Call it when tracing. + Better locality of variables. + +2001-11-19 Akim Demaille + + * src/print.c (print_actions): Better locality of variables. + +2001-11-19 Akim Demaille + + * src/derives.c (print_derives): Fix and enrich. + * src/closure.c (print_fderives): Likewise. + +2001-11-19 Akim Demaille + + * src/closure.c (itemsetend): Remove, replaced with... + (itemsetsize): new. + +2001-11-19 Akim Demaille + + * src/LR0.c (kernel_end): Remove, replaced with... + (kernel_size): new. + +2001-11-19 Akim Demaille + + * src/conflicts.c (set_conflicts): Use arrays instead of pointers + to clarify. + +2001-11-19 Akim Demaille + + * src/closure.c (closure): Use arrays instead of pointers to clarify. + +2001-11-19 Akim Demaille + + * src/closure.c, src/derives.c, src/nullable.c: Adjust various + trace messages. + * src/LR0.c: Likewise. + (allocate_itemsets): Use arrays instead of pointers to clarify. + +2001-11-19 Akim Demaille + + * src/getargs.c (statistics_flag): Replace with... + (trace_flag): New. + (longopts): Accept --trace instead of --statistics. + * src/getargs.h, src/options.c: Adjust. + * src/LR0.c, src/closure.c, src/derives.c, src/nullable.c, + * src/reduce.c: Use trace_flags instead of the CPP conditional TRACE. + +2001-11-19 Akim Demaille + + * src/LR0.c (new_itemsets, get_state): Use more arrays and fewer + pointers to clarify the code. + (save_reductions, save_shifts): Factor common parts of alternatives. + +2001-11-19 Akim Demaille + + * src/LR0.c (new_state, get_state): Complete TRACE code. + * src/closure.c: Include `reader.h' to get `tags', needed by the + trace code. + Rename the conditional DEBUG as TRACE. + Output consistently TRACEs to stderr, not stdout. + * src/derives.c: Likewise. + * src/reduce.c: (inaccessable_symbols): Using if is better style + than goto. + Use `#if TRACE' instead of `#if 0' for tracing code. + +2001-11-19 Akim Demaille + + * src/system.h (LIST_FREE, shortcpy): New. + * src/LR0.c: Use them. + * src/output.c (free_itemsets, free_reductions, free_shifts): + Remove, replaced by LIST_FREE. + +2001-11-19 Akim Demaille + + * src/state.h (CORE_ALLOC, SHIFTS_ALLOC, ERRS_ALLOC) + (REDUCTIONS_ALLOC): New. + * src/LR0.c, src/conflicts.c: Use them to de-obfuscate memory + allocation. + +2001-11-19 Akim Demaille + + * src/LR0.c (new_state): Complete trace code. + * src/nullable.c (set_nullable): Don't translate traces. + +2001-11-19 Akim Demaille + + * src/print_graph.c (print_core): Better locality of variables. + * src/print.c (print_core): Likewise. + +2001-11-19 Akim Demaille + + * src/vcg.c: You do the output, so you are responsible of the + handling of VCG syntax, in particular: use quotearg. + * src/print_graph.c: Don't. + (print_actions): Don't output the actions as part of the nodes, + since that's the job of the edges. + (print_state): Don't output by hand: fill the node description, + and ask for its output. + +2001-11-19 Akim Demaille + + * src/bison.simple (yyparse): When verbosely reporting an error, + no longer put additional quotes around token names. + * tests/calc.at: Adjust. + +2001-11-19 Akim Demaille + + * src/symtab.h, src/symtab.c: `line' is a new member of `bucket'. + * src/reader.c (record_rule_lines, rline, rline_allocated): Remove. + * src/output.c: Adjust. + +2001-11-19 Akim Demaille + + * src/gram.h (rprec, rprecsym, rassoc): Remove, now part of... + (rule_t): this. + * src/conflicts.c, src/reader.c, src/reduce.c: Adjust. + +2001-11-19 Akim Demaille + + * src/gram.h (rule_t): New. + (rule_table): New. + (rrhs, rlhs): Remove, part of state_t. + * src/print_graph.c, src/closure.c, src/conflicts.c, src/derives.c, + * src/lalr.c, src/nullable.c, src/output.c, src/print.c, + * src/reader.c, src/reduce.c: Adjust. + +2001-11-19 Akim Demaille + + * src/reader.c (symbols_output): New, extracted from... + (packsymbols): Here. + (reader): Call it. + +2001-11-19 Akim Demaille + + * src/lalr.c (set_maxrhs, maxrhs): Remove, replaced with... + (maxrhs): this new function. + +2001-11-19 Akim Demaille + + * src/lalr.c (F): New macro to access the variable F. + Adjust. + +2001-11-19 Akim Demaille + + * src/lalr.h (LA): New macro to access the variable LA. + * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c: + * src/lalr.c: Adjust. + +2001-11-19 Akim Demaille + + * src/lalr.c (initialize_LA): Only initialize LA. Let... + (set_state_table): handle the `lookaheads' members. + +2001-11-19 Akim Demaille + + * src/lalr.h (lookaheads): Removed array, whose contents is now + a member of... + (state_t): this structure. + * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c: + Adjust. + +2001-11-19 Akim Demaille + + * src/lalr.h (consistent): Removed array, whose contents is now + a member of... + (state_t): this structure. + * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c: + Adjust. + +2001-11-19 Akim Demaille + + * src/lalr.h (reduction_table, shift_table): Removed arrays, whose + contents are now members of... + (state_t): this structure. + * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c: + Adjust. + +2001-11-19 Akim Demaille + + * src/lalr.h (state_t): New. + (state_table): Be a state_t * instead of a core **. + (accessing_symbol): Remove, part of state_t. + * src/lalr.c: Adjust. + (set_accessing_symbol): Merge into... + (set_state_table): this. + * src/print_graph.c, src/conflicts.c: Adjust. + +2001-11-14 Akim Demaille + + * tests/calc.at, tests/output.at, tests/regression.at, + * tests/testsuite.at, tests/torture.at: Rely on Autotest 2.52g: + now the tests are run in private dirs, therefore AC_CLEANUP and + family can be simplified to 0-ary. + * tests/atlocal.in: Now that we run `elsewhere' than in tests/, + use abs. path to find config.h. + * tests/calc.at (AT_CHECK_CALC): Don't try to check the compiler's + stderr, there can be way too much random noise. + Instead pass -Werror to GCC and rely on the exit status. + Reported by Wolfram Wagner. + +2001-11-14 Akim Demaille + + * src/bison.simple (yyparse): Let yyls1, yyss1 and yyvs1 be + defined only if yyoverflow is defined, to avoid `warning: unused + variable `yyvs1''. + Reported by The Test Suite. + +2001-11-14 Akim Demaille + + * src/print.c: Include reduce.h. + Reported by Hans Aberg. + +2001-11-14 Akim Demaille + + * src/lex.c, src/lex.h (token_buffer, unlexed_token_buffer): + Revert a previous patch: these are really const. + * src/conflicts.c (conflict_report): Additional useless pair of + braces to pacify GCC's warnings for `if () if () {} else {}'. + * src/lex.c (parse_percent_token): Replace equal_offset with + arg_offset. + arg is const. + Be sure to strdup `arg' when used, since there is no reason for + token_buffer not to change. + +2001-11-14 Akim Demaille + + * src/system.h (EXIT_SUCCESS, EXIT_FAILURE): Ensure a proper + definition. + * src/main.c (main): Use them. + Suggested by Hans Aberg. + +2001-11-12 Akim Demaille + + * src/system.h (ngettext): Now that we use ngettext, be sure to + provide a default definition when NLS are not used. + +2001-11-12 Akim Demaille + + * doc/bison.texinfo: Use `$' as shell prompt, not `%'. + Use @kbd to denote user input. + (Language and Grammar): ANSIfy the example. + Adjust its layout for info/notinfo. + (Location Tracking Calc): Output error messages to stderr. + Output locations in a more GNUtically correct way. + Fix a couple of Englishos. + Adjust @group/@end group pairs. + +2001-11-12 Akim Demaille + + %expect was not functioning at all. + + * src/conflicts.c (expected_conflicts): Set to -1. + (conflict_report): Use ngettext. + (conflicts_print): Check %expect and make its violation an error. + * doc/bison.texinfo (Expect Decl): Adjust. + * configure.in (AM_GNU_GETTEXT): Ask for ngettext. + * tests/regression.at (%expect not enough, %expect right) + (%expect too much): New. + +2001-11-12 Akim Demaille + + * tests/regression.at (Conflicts): Rename as... + (Unresolved SR Conflicts): this. + (Solved SR Conflicts): New. + +2001-11-12 Akim Demaille + + * src/reduce.c (print_results): Rename as... + (reduce_output): This. + Output to OUT, passed as argument, instead of output_obstack. + (dump_grammar): Likewise. + (reduce_free): New. + Also free V1. + (reduce_grammar): No longer call reduce_output, since... + * src/print.c (print_results): do it. + * src/main.c (main): Call reduce_free; + +2001-11-12 Akim Demaille + + * src/conflicts.c (print_reductions): Accept OUT as argument. + Output to it, not to output_obstack. + * src/print.c (print_actions): Adjust. + +2001-11-12 Akim Demaille + + * src/conflicts.c (count_sr_conflicts, count_rr_conflicts): Return + the result instead of using... + (src_total, rrc_total, src_count, rrc_count): Remove. + (any_conflicts): Remove. + (print_conflicts): Split into... + (conflicts_print, conflicts_output): New. + * src/conflicts.h: Adjust. + * src/main.c (main): Invoke both conflicts_output and conflicts_print. + * src/print.c (print_grammar): Issue `\n' between two rules. + * tests/regression.at (Conflicts): New. + Reported by Tom Lane. + +2001-11-12 Akim Demaille + + * tests/regression.at (Invalid input): Remove, duplicate with + ``Invalid input: 1''. + +2001-11-12 Akim Demaille + + * tests/torture.at (AT_DATA_STACK_TORTURE) + (Exploding the Stack Size with Alloca) + (Exploding the Stack Size with Malloc): New. + +2001-11-12 Akim Demaille + + * src/bison.simple (YYSTACK_REALLOC): New. + (yyparse) [!yyoverflow]: Use it and free the old stack. + Reported by Per Allansson. + +2001-11-12 Pascal Bart + + * src/bison.simple: Define type yystype instead of YYSTYPE, and + define CPP macro, which substitute YYSTYPE by yystype. + * src/reader.c (parse_union_decl): Output yystype/YYSTYPE as we do + with yyltype/YYLTYPE. This allows inclusion of the generated + header within the parser if the compiler, such as GGC, accepts + multiple equivalent #defines. + From Akim. + +2001-11-05 Akim Demaille + + * src/reader.c (symbols_output): New, extracted from... + (packsymbols): here. + (reader): Adjust. + +2001-11-05 Akim Demaille + + * src/lex.c (parse_percent_token): s/quotearg/quote/. + +2001-11-05 Akim Demaille + + * tests/regression.at (AT_TEST_CPP_GUARD_H): Adjust the clean up + pattern. + +2001-11-05 Akim Demaille + + * src/options.h (struct option_table_struct): set_flags is void*. + * src/options.c (longopts): Support `--output' and `%output'. + (usage): Adjust. + * src/lex.h (tok_setopt): Remove, replaced with... + (tok_intopt, tok_stropt): these new guys. + * src/lex.c (getopt.h): Not needed. + (token_buffer, unlexed_token_buffer): Not const. + (percent_table): Promote `-' over `_' in directive names. + Active `%name-prefix', `file-prefix', and `output'. + (parse_percent_token): Accept possible arguments to directives. + Promote `-' over `_' in directive names. + +2001-11-04 Akim Demaille + + * doc/bison.texinfo (Decl Summary): Split the list into + `directives for grammars' and `directives for bison'. + Sort'em. + Add description of `%name-prefix', `file-prefix', and `output'. + Promote `-' over `_' in directive names. + (Bison Options): s/%locactions/%locations/. Nice Freudian slip. + Simplify the description of `--name-prefix'. + Promote `-' over `_' in directive names. + Promote `--output' over `--output-file'. + Fix the description of `--defines'. + * tests/output.at: Exercise %file-prefix and %output. + +2001-11-02 Akim Demaille + + * doc/refcard.tex: Update. + +2001-11-02 Akim Demaille + + * src/symtab.h (SUNDEF): New. + * src/symtab.c (bucket_new): Init user_token_number to SUNDEF to + stand for `uninitialized', instead of 0. + * src/reader.c (packsymbols, parse_thong_decl): Adjust. + * src/lex.c (lex): Adjust. + + * tests/calc.at (_AT_DATA_CALC_Y): Declare a token for EOF. + Number it 0. + Let yylex return it instead of a plain 0. + Reported by Dick Streefland. + +2001-11-02 Akim Demaille + + * tests/regression.at (Mixing %token styles): New test. + +2001-11-02 Akim Demaille + + * src/reader.c (parse_thong_decl): Formatting changes. + (token_translations_init): New, extracted from... + (packsymbols): Here. + Adjust. + +2001-11-01 Akim Demaille + + * tests/regression.at (AT_TEST_CPP_GUARD_H): New. + Check that `9foo.y' produces correct cpp guards. + * src/files.c (compute_header_macro): Prepend `BISON_' to CPP + guards. + Reported by Wwp. + +2001-11-01 Akim Demaille + + * tests/regression.at (Invalid input: 2): New. + * src/lex.c (unlexed_token_buffer): New. + (lex, unlex): Adjust: when unlexing, be sure to save token_buffer + too. + Reported by Wwp. + +2001-11-01 Akim Demaille + + * tests/calc.at: Catch up with 1.30. + * configure.in: Bump to 1.49a. + Adjust to newer Autotest. + +2001-10-19 Pascal Bart + + * src/conflicts.c: Move global variables rrc_total and src_total ... + (print_conflicts): here. + * src/output.c (output): Free global variable user_toknums. + * src/lex.c (token_obstack): Become static. + +2001-10-18 Akim Demaille + + * tests/atlocal.in (GCC): Add. + * tests/calc.at: s/m4_match/m4_bmatch/. + s/m4_patsubst/m4_bpatsubst/. + (AT_CHECK_CALC): Check the compiler's stderr only if it's GCC. + * configure.in: AC_SUBST(GCC). + +2001-10-14 Marc Autret + + * src/options.c (create_long_option_table): Fix. + +2001-10-10 Akim Demaille + + * src/bison.simple: Be sure to set YYSTACK_USE_ALLOCA. + +2001-10-04 Akim Demaille + + * src/reader.c (parse_union_decl): Push the caracters in + union_obstack, not attrs_obstack. + +2001-10-04 Akim Demaille + + Merge in the branch 1.29. + + * src/reader.c (packsymbols): Use a temporary obstack for + `%%tokendef', since output_stack is already used elsewhere. + + 2001-10-02 Akim Demaille + + Bump 1.29d. + + 2001-10-02 Akim Demaille + + Version 1.29c. + + 2001-10-02 Akim Demaille + + * tests/regression.at (Invalid CPP headers): New. + From Alexander Belopolsky. + * src/files.c (compute_header_macro): Map non alnum chars to `_'. + + 2001-10-02 Akim Demaille + + * tests/regression.at (Invalid input): New. + * src/lex.c (lex): Be sure to set `token_buffer' in any case. + Reported by Shura. + + 2001-10-02 Akim Demaille + + * tests/calc.at: Now that --debug works, the tests must be adjusted. + + 2001-10-02 Akim Demaille + + * src/output.c (output_parser): Assert `skeleton'. + * src/files.c (skeleton_find): Look harder for skeletons on DOSish + systems. + From Shura. + + 2001-10-01 Marc Autret + + * src/lex.h: Echo modifications. + * src/lex.c (unlex): Parameter is now token_t. + From Hans Aberg. + + 2001-10-01 Marc Autret + + * src/main.c: Include lex.h. + From Hans Aberg. + + 2001-09-29 Akim Demaille + + * src/getargs.c (longopts): `--debug' is `-t', not `-d'. + + 2001-09-28 Akim Demaille + + * tests/testsuite.at: Update to newer Autotest. + * tests/Makefile.am (EXTRA_DIST): bison is not to be shipped. + + 2001-09-27 Akim Demaille + + Position independent wrapper. + + * tests/bison: Remove. + * tests/bison.in: New. + * configure.in: Adjust. + + 2001-09-27 Paul Eggert + + Port quotearg fixes from tar 1.13.24. + + * lib/quotearg.c: BSD/OS 4.1 wchar.h requires FILE and struct + tm to be declared. + (HAVE_MBSINIT): Undef if !HAVE_MBRTOWC. + (mbsinit): Define to 1 if !defined mbsinit && !HAVE_MBSINIT. + + * m4/Makefile.am (EXTRA_DIST): Add mbrtowc.m4. + * m4/mbrtowc.m4: New file. + * m4/prereq.m4 (jm_PREREQ_QUOTEARG): Check for mbsinit and stddef.h. + Use jm_FUNC_MBRTOWC instead of AC_CHECK_FUNCS(mbrtowc). + + 2001-09-27 Akim Demaille + + Bump to 1.29c. + + 2001-09-27 Akim Demaille + + Version 1.29b. + + 2001-09-25 Akim Demaille + + * src/system.h: Include `xalloc.h'. + Remove it from the C files. + * src/files.c (output_files): Free the obstacks. + * src/lex.c (init_lex): Rename as... + (lex_init): this. + (lex_free): New. + * src/main.c (main): Use it. + + 2001-09-24 Marc Autret + + * src/vcg.c (open_edge, close_edge, open_node, close_node): Change + to output informations in fout (FILE*). + (open_graph, close_graph): Likewise. + (output_graph, output_edge, output_node): Likewise. + * src/vcg.h: Update function prototypes. + * src/print_graph.c (print_graph): Open output graph file. + (print_actions): Adjust. + * src/files.h: Remove extern declaration. + * src/files.c: Remove graph_obstack declaration. + (open_files): Remove graph_obstack initialization. + (output_files): Remove graph_obstack saving. + + 2001-09-24 Marc Autret + + * src/files.c (compute_output_file_names): Fix. + + 2001-09-24 Marc Autret , + Akim Demaille + + * src/reader.c (reader): Remove call to free_symtab (). + * src/main.c (main): Call it here. + Include symtab.h. + * src/conflicts.c (initialize_conflicts): Rename as... + (solve_conflicts): this. + * src/print.c (print_core, print_actions, print_state) + (print_grammar): Dump to a file instead a `output_obstack'. + (print_results): Dump `output_obstack', and then proceed with the + FILE *. + * src/files.c (compute_output_file_names, close_files): New. + (output_files): Adjust. + * src/main.c (main): Adjust. + + 2001-09-23 Marc Autret + + * src/files.c (compute_header_macro): Computes header macro name + from spec_defines_file when given. + + 2001-09-23 Marc Autret + + * src/files.c (output_files): Add default extensions. + + 2001-09-22 Akim Demaille + + * src/conflicts.c (finalize_conflicts): Rename as... + (free_conflicts): this. + + 2001-09-22 Akim Demaille + + * src/gram.c (gram_free): Rename back as... + (dummy): this. + (output_token_translations): Free `token_translations'. + * src/symtab.c (free_symtab): Free the tag field. + + 2001-09-22 Akim Demaille + + Remove `translations' as it is always set to true. + + * src/gram.h: Adjust. + * src/reader.c (packsymbols, parse_token_decl): Adjust + * src/print.c (print_grammar): Adjust. + * src/output.c (output_token_translations): Adjust. + * src/lex.c (lex): Adjust. + * src/gram.c: Be sure the set pointers to NULL. + (dummy): Rename as... + (gram_free): this. + + 2001-09-22 Akim Demaille + + * configure.in: Invoke AM_LIB_DMALLOC. + * src/system.h: Use dmalloc. + * src/LR0.c: Be sure to have pointers initialized to NULL. + (allocate_itemsets): Allocate kernel_items only if needed. + + 2001-09-22 Akim Demaille + + * configure.in: Bump to 1.29b. + * tests/Makefile.am (DISTCLEANFILES): Add package.m4. + * tests/calc.at (_AT_DATA_CALC_Y): #undef malloc so that we don't + need xmalloc.c in calc.y. + From Pascal Bart. + + 2001-09-21 Akim Demaille + + Version 1.29a. + * Makefile.maint, config/config.guess, config/config.sub, + * config/missing: Update from masters. + * tests/Makefile.am ($(srcdir)/$(TESTSUITE)): No longer depend + upon package.m4. + * configure.in (ALL_LINGUAS): Add `tr'. + + 2001-09-21 Akim Demaille + + * tests/Makefile.am (package.m4): Move to... + ($(srcdir)/$(TESTSUITE)): here. + + 2001-09-20 Akim Demaille + + * src/complain.c: No longer try to be standalone: use system.h. + Don't assume __STDC__ is defined to 1. Just test if it is defined. + * src/complain.h: Likewise. + * src/reduce.c (useless_nonterminals, inaccessable_symbols): + Remove the unused variable `n'. + From Albert Chin-A-Young. + + 2001-09-18 Marc Autret + + * doc/bison.1: Update. + * doc/bison.texinfo (Bison Options): Update --defines and --graph + descriptions. + (Option Cross Key): Update. + Add --graph. + + 2001-09-18 Marc Autret + + * tests/regression.at: New test (comment in %union). + + 2001-09-18 Marc Autret + + * src/reader.c (parse_union_decl): Do not output '/'. Let copy_comment + do that. + Reported by Keith Browne. + + 2001-09-18 Marc Autret + + * tests/output.at: Add tests for --defines and --graph. + + 2001-09-18 Marc Autret + + * tests/output.at: Removes tests of %{header,src}_extension features. + + 2001-09-18 Akim Demaille + + * tests/Makefile.am (package.m4): New. + * tests/calc.at (_AT_CHECK_CALC): Just run `calc input'. + (_AT_CHECK_CALC_ERROR): Likewise. + Factor the `, ' part of verbose error messages. + + 2001-09-18 Marc Autret + + * src/getargs.c (longopts): Declare --defines and --graph as options + with optional arguments. + * src/files.h: Add extern declarations. + * src/files.c (spec_graph_file, spec_defines_file): New. + (output_files): Update. + Remove CPP-outed code. + + 2001-09-18 Marc Autret + + Turn off %{source,header}_extension feature. + + * src/files.c (compute_exts_from_gf): Update. + (compute_exts_from_src): Update. + (output_files): CPP-out useless code. + * src/files.h: Remove {header,source}_extension extern declarations. + * src/reader.c (parse_dquoted_param): CPP-out. + (parse_header_extension_decl): Remove. + (parse_source_extension_decl): Remove. + (read_declarations): Remove cases tok_{hdrext,srcext}. + * src/lex.c (percent_table): Remove {header,source}_extension entries. + * src/lex.h (token_t): Remove tok_hdrext and tok_srcext. + + 2001-09-10 Akim Demaille + + * tests/output.at (AT_CHECK_BISON_FLAGS, AT_CHECK_BISON_PERCENT): + (AT_CHECK_BISON_PERCENT_FLAGS): Merge into... + (AT_CHECK_OUTPUT): this. + Merely check ls' exit status, its output is useless. + + 2001-09-10 Akim Demaille + + * tests/calc.at: Use m4_match. + (_AT_DATA_CALC_Y): Check `yyin != NULL', not `stdin != NULL'. + + 2001-09-10 Marc Autret , + Akim Demaille + + * src/vcg.h (graph_s): color, textcolor, bordercolor are now + enum color_e. + * src/print_graph.c (print_graph): Initalize graph.layoutalgorithm + to `normal'. + * src/reader.c (parse_token_decl): Initialize token with tok_eof. + * src/lex.h: Adjust prototype. + (token_t): Add `tok_undef'. + * src/lex.c (struct percent_table_struct): Retval is now a token_t. + (parse_percent_token): Now returns token_t. + Add default statement in switch. + (lex): Separate `c' as an input variable, from the token_t result + part. + (unlexed): Is a token_t. + + 2001-09-10 Akim Demaille + + * configure.in: Bump to 1.29a. + + 2001-09-07 Akim Demaille + + Version 1.29. + + 2001-08-30 Akim Demaille + + * tests/atgeneral.m4, tests/atconfig.in, tests/suite.at: Remove. + * m4/atconfig.m4: Remove. + * tests/testsuite.at, tests/atlocal.in, tests/output.at, + * tests/bison: New. + * tests/regression.at, tests/calc.at: Use m4_define, AT_BANNER, + m4_if, m4_patsubst, and m4_regexp. + * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Use an + `input' file instead of echo. + + 2001-08-29 Akim Demaille + + Bump to 1.28e. + + 2001-08-29 Akim Demaille + + Version 1.28d. + + 2001-08-29 Paul Eggert + + * src/bison.simple (yyparse): Don't take the address of an + item before the start of an array, as that doesn't conform to + the C Standard. + + 2001-08-29 Robert Anisko + + * doc/bison.texinfo (Location Tracking Calc): New node. + + 2001-08-29 Paul Eggert + + * src/output.c (output): Do not define const, as this now + causes more problems than it cures. + + 2001-08-29 Akim Demaille + + * doc/bison.texinfo: Modernize `@node' and `@top' use: just name + the nodes. + Be sure to tag the `detailmenu'. + + 2001-08-29 Akim Demaille + + * Makefile.maint (do-po-update): Wget refuses to overwrite files: + download in a tmp dir. + + 2001-08-28 Marc Autret + + * config/depcomp: New file. + + 2001-08-28 Marc Autret + + * doc/bison.1 (mandoc): Adjust. + From Juan Manuel Guerrero. + + 2001-08-28 Marc Autret + + * src/print_graph.c (print_state): Fix. + + 2001-08-27 Marc Autret + + * src/vcg.h (classname_s, infoname_s, node_s): Constify the + char * members. + Echo modifications to the functions prototypes. + * src/vcg.c (add_classname, add_infoname): Adjust arguments. + + 2001-08-27 Marc Autret + + * src/vcg.c: Include `xalloc.h'. + (add_colorentry): New. + (add_classname): New. + (add_infoname): New. + * src/vcg.h: Add new prototypes. + + 2001-08-27 Akim Demaille + + * Makefile.maint: Sync. again with CVS Autoconf. + + 2001-08-27 Akim Demaille + + * Makefile.maint: Formatting changes. + (po-update, cvs-update, update): New targets. + (AMTAR): Remove. + + 2001-08-27 Akim Demaille + + * Makefile.am (AUTOMAKE_OPTIONS): 1.5. + * Makefile.maint: Sync. with CVS Autoconf. + + 2001-08-27 Marc Autret + + * src/vcg.h (struct infoname_s): New. + (struct colorentry_s): New. + (graph_s): New fields {vertical,horizontal}_order in structure. + Add `infoname' field. + Add `colorentry' field; + * src/vcg_defaults.h (G_VERTICAL_ORDER): New. + (G_HORIZONTAL_ORDER): New. + (G_INFONAME): New. + (G_COLORENTRY): New. + * src/vcg.c (output_graph): Add output of {vertical,horizontal}_order. + Add output of `infoname'. + Add output of `colorentry'. + + 2001-08-27 Marc Autret + + * src/reader.c (parse_dquoted_param): Rename variable `index' to `i'. + This one shadowed a global parameter. + + 2001-08-24 Marc Autret + + * src/print_graph.c (node_output_size): Declared POSIX `size_t' type, + instead of `unsigned'. + (print_state): Do not call obstack_object_size () in obstack_grow () + to avoid macro variables shadowing. + + 2001-08-23 Marc Autret + + * src/lex.c (percent_table): Typo: s/naem/name/. + Add graph option. + Normalize new options declarations. + + 2001-08-20 Pascal Bart + + * tests/suite.at: Exercise %header_extension and %source_extension. + + 2001-08-16 Marc Autret + + * src/reader.c (parse_dquoted_param): New. + (parse_header_extension_decl): Use it. + (parse_source_extension_decl): Likewise. + + 2001-08-16 Marc Autret + + * src/vcg.c: Remove includes of `complain.h' and `xalloc.h'. + (get_xxxx_str): Use assert () instead of complain (). + Remove return invokations in default cases. + (get_decision_str): Modify default behaviour. Remove second argument. + Echo modifications on calls. + (output_graph): Fix. + + 2001-08-16 Marc Autret + + * src/getargs.c (usage): Update with ``-g, --graph''. + + 2001-08-16 Marc Autret + + * doc/bison.texinfo (Bison Options): Add items `-g', `--graph'. + (Option Cross Key): Likewise. + * doc/bison.1: Update. + +2001-09-25 Pascal Bart + + * src/output.c (output_master_parser): Don't finish action_obstack. + (output_parser): Don't care about the muscle action, here. + (prepare): Copy the action_obstack in the action muscle. + (output): Free action_obstack. + +2001-09-23 Pascal Bart + + * src/reader.c (parse_union_decl): Add new obstack union_obstack. Which + will contain `%union' declaration. + (parse_union_decl): Delete #line directive output. + (parse_union_decl): Substitute /attrs_obstack/union_obstack for all + informations about %union. + (parse_union_decl): Copy the union_obstack in the muscle stype. + * src/bison.simple: Add new #line directive. + Add typdef %%stype YYSTYPE. + +2001-09-23 Pascal Bart + + * src/bison.simple: Add new `#line' directive. + +2001-09-22 Pascal Bart + + * src/bison.simple: New `#line' directive. + * src/output.c (output_parser): Support new dynamic muscle input_line. + +2001-09-22 Marc Autret + + * src/output.c (output_master_parser): New. + (output_parser): Be more re-entrant. + +2001-09-21 Marc Autret + + * src/reader.c (copy_definition, parse_union_decl): Update and use + `linef' muscle. + (copy_action): Likewise. + Use obstack_1grow (). + * src/muscle_tab.c (muscle_init): Add muscle `linef'. + +2001-09-21 Marc Autret + + * src/options.c (option_table): Adjust. + * src/lex.c (parse_percent_token): Fix. + +2001-09-20 Pascal Bart + + * src/options.c (symtab.h): Include it, need by lex.h. + +2001-09-20 Pascal Bart + + * src/lex.c (parse_percent_token): Change type of variable `tx', which + is now an option_table_struct*. + (option_strcmp): New function option_strcmp. + (parse_percent_token): Call option_strcmp. + * src/getargs.c (xalloc.h, options.h): Include it. + (getargs): Call create_long_option_table. + (getargs): Free longopts at the end of the function. + (shortopts): Move in options.c. + * src/options.c (create_long_option_table): New function. Convert + information from option_table to option structure. + * src/reader.c (options.h): Include it. + + * src/Makefile.am: Adjust. + * src/options.c (option_table): Create from longopts and percent_table. + * src/getargs.c (longopts): Delete. + * src/lex.c (struct percent_table_struct): Delete. + (percent_table): Delete. + (options.h): Include it. + * src/options.c: Create. + * src/options.h: Create. + Declare enum opt_access_e. + Define struct option_table_struct. + +2001-09-20 Marc Autret + + * doc/bison.texinfo: Adjust terminologies about prologue and epilogue + sections of Bison. + +2001-09-19 Pascal Bart + + * src/bison.simple: s/%%filename/%%skeleton. + * src/muscle_tab.c (getargs.h): Include it. + (muscle_init): Insert new muscle skeleton. + +2001-09-18 Pascal Bart + + * src/output.c (output_parser): Delete unused variable actions_dumped. + +2001-09-07 Pascal Bart + + * src/output.c (output): Delete call to reader_output_yylsp. + * src/reader.c (reader): Likewise. + * src/reader.h: Delete declaration of reader_output_yylsp. + +2001-09-02 Marc Autret + + * src/reader.c: Include muscle_tab.h. + (parse_union_decl): Update. + (parse_macro_decl): Rename parse_muscle_decl. + Update to use renamed functions and variable. + (read_declarations, copy_action, read_additionnal_code, : Updated + with correct variables and functions names. + (packsymbols, reader): Likewise. + + * src/reader.h (muscle_obstack): Extern declaration update. + + * src/output.c: Include muscle_tab.h + In all functions using macro_insert, change by using muscle_insert (). + (macro_obstack): Rename muscle_obstack. + Echo modifications in the whole file. + (MACRO_INSERT_INT): Rename MUSCLE_INSERT_INT. + (MACRO_INSERT_STRING): Rename MUSCLE_INSERT_STRING. + (MACRO_INSERT_PREFIX): Rename MUSCLE_INSERT_PREFIX. + + * src/muscle_tab.h: Update double inclusion macros. + (macro_entry_s): Rename muscle_entry_s. + Update prototypes. + + * src/muscle_tab.c: Include muscle_tab.h. + Rename macro_tabble to muscle_table. + (mhash1, mhash2, mcmp): Use muscle_entry. + (macro_init): Rename muscle_init. Update. + (macro_insert): Rename muscle_insert. Update. + (macro_find): Rename muscle_find. Update. + + * src/main.c: Include muscle_tab.h. + (main): Call muscle_init (). + * src/Makefile.am (bison_SOURCES): Echo modifications. + +2001-09-02 Marc Autret + + Now the files macro_tab.[ch] are named muscle_tab.[ch]. + + * src/muscle_tab.c, src/muscle_tab.h: Add files. + +2001-09-02 Marc Autret + + * src/macrotab.c, src/macrotab.h: Remove. + +2001-09-01 Pascal Bart + + * src/reader.c (copy_guard): Use muscle to specify the `#line' + filename. + +2001-09-01 Marc Autret + + * tests/calc.at (exp): Now, YYERROR_VERBOSE need to be set + to an explicit value to activate the feature. We do it here. + +2001-08-31 Pascal Bart + + * src/output.c (prepare): Delete the `filename' muscule insertion. + * src/reader.c (copy_action): Use `filename' muscule with `#line'. + (parse_union_decl): Likewise. + * src/macrotab.c (macro_init): Initialize filename by infile. + +2001-08-31 Marc Autret + + * src/bison.simple (YYLSP_NEEDED): New definition. + * src/output.c (prepare): Add macro insertion of `locations_flag' + +2001-08-31 Pascal Bart + + * src/output.c (prepare): Delete insertion of previous muscles, + and insert the `prefix' muscles. + * src/macrotab.c (macro_init): Likewise. + (macro_init): Initialization prefix directive by `yy'. + * src/bison.simple: Substitute all %%yylex, %%yychar, %%yylval, + %%yydebug, %%yyerror, %%yynerrs and %%yyparse by yylex, yychar, + yylval, yydebug, yyerror, yynerrs and yyparse. + New directive `#define' to substitute yydebug, ... with option + name_prefix. + +2001-08-31 Pascal Bart + + * src/main.c (main): Standardize. + * src/output.c (output_table_data, output_parser): Likewise. + * src/macrotab.h, src/macrotab.c, src/bison.simple: Likewise. + +2001-08-31 Pascal Bart , Marc Autret + + * src/reader.c (read_additionnal_code): Rename %%user_code to + %%epilogue. + * src/output.c (output): Rename %%declarations to %%prologue. + * src/bison.simple: Echo modifications. + +2001-08-31 Marc Autret + + * src/reader.c (readgram): CleanUp. + (output_token_defines): Likewise. + (packsymbols): Likewise. + (reader): Likewise. + * src/output.c (output): CPP-out useless code. + +2001-08-31 Pascal Bart + + * src/reader.c (reader): Delete obsolete call to function + output_trailers and output_headers. + * src/output.h: Remove obsolete functions prototypes of output_headers + and output_trailers. + +2001-08-30 Pascal Bart + + * src/main.c: Include macrotab.h. + * src/macrotab.h (macro_entry_s): Constify fields. + Adjust functions prototypes. + * src/macrotab.c (macro_insert): Constify key and value. + (macro_find): Constify key. + (macro_insert): Include 'xalloc.h' + (macro_insert): Use XMALLOC. + (macro_find): Constify return value. + * src/output.c (output_table_data): Rename table to table_data. + (output_parser): Constify macro_key, macro_value. + +2001-08-30 Marc Autret + + * src/reader.c (parse_skel_decl): New. + (read_declarations): Add case `tok_skel', call parse_skel_decl (). + * src/lex.h (token_t): New token `tok_skel'. + * src/lex.c (percent_table): Add skeleton option entry. + Standardize. + +2001-08-29 Marc Autret + + * src/bison.simple: Add %%user_code directive at the end. + * src/reader.c (read_additionnal_code): New. + (reader): Use it. + * src/output.c (output_program): Remove. + (output): Update. + +2001-08-28 Marc Autret + + * src/output.c (output_actions): Clean up. + (output_gram): CPP-out useless code. + * src/reader.c (reader): Clean up, CPP-out useless code. + +2001-08-28 Pascal Bart + + * src/output.c (output): Copy attrs_obstack in the '%%definitions' + directive. + * src/bison.simple: Add `%%definitions'. + +2001-08-28 Marc Autret + + * config/depcomp: New file. + +2001-08-27 Paul Eggert + + * src/bison.simple (yyparse): Don't take the address of an + item before the start of an array, as that doesn't conform to + the C Standard. + +2001-08-27 Robert Anisko + + * src/output.c (output): Remove the initialization of the macro + obstack. It was done too late here. + + * src/reader.c (parse_macro_decl): Fix. Use of the macro obstack was + completely wrong. + (reader): Initialize the macro obstack here, since we need it to grow + '%define' directives. + + * src/reader.h: Declare the macro obstack as extern. + +2001-08-27 Robert Anisko + + * src/output.c (output_parser): Fix. Store single '%' characters in + the output obstack instead of throwing them away. + +2001-08-27 Akim Demaille + + * Makefile.am (AUTOMAKE_OPTIONS): 1.5. + +2001-08-25 Robert Anisko + + * lib/Makefile.am: Adjust. + +2001-08-25 Robert Anisko + + * src/bison.simple: Update and add '%%' directives. + +2001-08-25 Robert Anisko + + * src/reader.c (reader): Remove calls to 'output_headers' and + 'output_trailers'. Remove some C output. + (readgram): Disable a piece of code that was writing a default + definition for 'YYSTYPE'. + (reader_output_yylsp): Remove. + (packsymbols): Output token defintions to a macro. + (copy_definition): Disable C output. + + * src/reader.c (parse_macro_decl): New function used to parse macro + declarations. + (copy_string2): Put the body of copy_string into this new function. + Add a parameter to let the caller choose whether he wants to copy the + string delimiters or not. + (copy_string): Be a simple call to copy_string2 with the last argument + bound to true. + (read_declarations): Add case for macro definition. + (copy_identifier): New. + (parse_macro_decl): Read macro identifiers using copy_identifier + rather than lex. + +2001-08-25 Robert Anisko + + * src/output.c (prepare): Add prefixed names. + (output_parser): Output semantic actions. + (output_parser): Fix bug on '%%line' directives. + + * src/output.c (output_headers): Remove. The C code printed by this + function should now be in the skeletons. + (output_trailers): Remove. + (output): Disable call to 'reader_output_yylsp'. + (output_rule_data): Do not output tables to the table obstack. + + * src/output.c: Remove some C dedicated output. + Improve the use of macro and output obstacks. + (output_defines): Remove. + + * src/output.c (output_token_translations): Associate 'translate' + table with a macro. No output to the table obstack. + (output_gram): Same for 'rhs' and 'prhs'. + (output_stos): Same for 'stos'. + (output_rule_data): Same for 'r1' and 'r2'. + (token_actions): Same for 'defact'. + (goto_actions): Same for 'defgoto'. + (output_base): Same for 'pact' and 'pgoto'. + (output_table): Same for 'table'. + (output_check): Same for 'check'. + + * src/output.c (output_table_data): New function. + (output_short_table): Remove. + (output_short_or_char_table): Remove. + + * src/output.c (output_parser): Replace most of the skeleton copy code + with something new. Skeletons are now processed character by character + rather than line by line, and Bison looks for '%%' macros. This is the + first step in making Bison's output process (a lot) more flexible. + (output_parser): Use the macro table. + +2001-08-25 Robert Anisko + + * src/main.c (main): Initialize the macro table. + +2001-08-25 Robert Anisko + + * src/lex.c (percent_table): Add tok_define. + * src/lex.h: Add tok_define. + +2001-08-25 Robert Anisko + + * src/macrotab.c: New file. + * src/macrotab.h: New file. + * src/Makefile.am: Update. + +2001-08-25 Robert Anisko + + * lib/hash.c: New file. + * lib/hash.h: New file. + * lib/Makefile.am: Update. + +2001-08-15 Akim Demaille + + Version 1.28c. + +2001-08-15 Marc Autret + + * src/reader.c (readgram): Indent output macro YYSTYPE. + (packsymbols): Likewise. + (output_token_defines): Likewise. + * src/files.c: Standardize. + (compute_header_macro): New. + (defines_obstack_save): New. Use compute_header_macro. + (output_files): Update. Use defines_obstack_save. + +2001-08-15 Akim Demaille + + * doc/bison.texinfo (Table of Symbols): Document + YYSTACK_USE_ALLOCA. + +2001-08-15 Akim Demaille + + * missing: Update from CVS Automake. + * config/config.guess, config/config.sub, config/texinfo.tex: + Update from gnu.org. + +2001-08-15 Akim Demaille + + * Makefile.maint: Sync with CVS Autoconf. + +2001-08-14 Pascal Bart + + * doc/bison.texinfo: Include GNU Free Documentation License from + `fdl.texi'. + * doc/fdl.texi: Add to package. + +2001-08-14 Marc Autret + + Turn on %{source,header}_extension features. + + * src/lex.c (percent_table): Un-CPP out header_extension and + source_extension. + * src/files.c (compute_exts_from_gf): Compare pointers with NULL. + (compute_exts_from_src): Remove conditions. It restores priorities + between options. + +2001-08-14 Marc Autret + + * src/files.c (compute_base_names): Add extensions computing when + `--file-prefix' used. + Standardize function calls. + +2001-08-13 Marc Autret + + * src/bison.simple (YYSTACK_USE_ALLOCA): Changed to allow users + defining it (defined but null disables alloca). + +2001-08-13 Marc Autret + + * src/bison.simple (_yy_memcpy): CPP reformat. + +2001-08-13 Pascal Bart + + * tests/atconfig.in (CPPFLAGS): Fix. + +2001-08-10 Pascal Bart + + * doc/bison.texinfo: Include GNU General Public License from + `gpl.texi'. + * doc/gpl.texi: Add to package. + +2001-08-10 Marc Autret + + * src/print_graph.h: Fix. + * src/reader.c (read_declarations): Use parse_header_extension_decl (). + +2001-08-10 Akim Demaille + + * src/system.h: Provide default declarations for stpcpy, strndup, + and strnlen. + +2001-08-10 Robert Anisko + + * doc/bison.texinfo (Locations): Update @$ stuff. + +2001-08-09 Robert Anisko + + * src/bison.simple (YYLLOC_DEFAULT): Update. + (yyparse): Adjust. + +2001-08-08 Marc Autret + + * doc/bison.texinfo: Change @samp{$<@dots{}>} to + @samp{$<@dots{}>@var{n}} in Section Actions in Mid-Rule. + Reported by Fabrice Bauzac. + +2001-08-08 Marc Autret + + * src/vcg_default.h: Use NULL instead of 0 to initialize pointers. + * src/vcg.c (output_node): Fix. + * src/vcg.h: Cleanup. + * src/print_graph.c: Add comments. + (node_output_size): New global variable. Simplify the formatting of + the VCG graph output. + (print_actions): Unused code is now used. It notifies the final state + and no action states in the VCG graph. It also give the reduce actions. + The `shift and goto' edges are red and the `go to state' edges are + blue. + Get the current node name and node_obstack by argument. + (node_obstack): New variable. + (print_state): Manage node_obstack. + (print_core): Use node_obstack given by argument. + A node is not only computed here but in print_actions also. + (print_graph): CPP out useless code instead of commenting it. + +2001-08-07 Pascal Bart + + * tests/atconfig.in (CPPFLAGS): Fix. + +2001-08-07 Akim Demaille + + * src/print_graph.c (quote): New. + (print_core): Use it. + +2001-08-06 Akim Demaille , Marc Autret + + * src/vcg.c (complain.h): Include it. + Unepitaize `return' invocations. + [NDEBUG] (main): Remove. + * src/vcg.h (node_t, edge_t, graph_t): Constify the char * members. + * src/files.c (open_files): Initialize graph_obstack. + * src/print_graph.c (print_actions): CPP out useless code. + (print_core): Don't output the last `\n' in labels. + Use `quote'. + * src/files.c (output_files): Output the VCG file. + * src/main.c (main): Invoke print_graph (); + +2001-08-06 Marc Autret + + Automaton VCG graph output. + Using option ``-g'' or long option ``--graph'', you can generate + a gram_filename.vcg file containing a VCG description of the LALR (1) + automaton of your grammar. + + * src/main.c: Call to print_graph() function. + * src/getargs.h: Update. + * src/getargs.c (options): Update to catch `-g' and `--graph' options. + (graph_flag): New flag. + (longopts): Update. + (getargs): Add case `g'. + * src/files.c (graph_obstack): New obstack struct. + (open_files): Initialize new obstack. + (output_files): Saves graph_obstack if required. + * src/files.h (graph_obstack): New extern declaration. + * src/Makefile.am: Add new source files. + +2001-08-06 Marc Autret + + * src/print_graph.c, src/print_graph.h (graph): New. + * src/vcg.h: New file. + * src/vcg.c: New file, VCG graph handling. + +2001-08-06 Marc Autret + + Add of %source_extension and %header_extension which specify + the source or/and the header output file extension. + + * src/files.c (compute_base_names): Remove initialisation of + src_extension and header_extension. + (compute_exts_from_gf): Update. + (compute_exts_from_src): Update. + (output_files): Update. + * src/reader.c (parse_header_extension_decl): New. + (parse_source_extension_decl): New. + (read_declarations): New case statements for the new tokens. + * src/lex.c (percent_table): Add entries for %source_extension + and %header_extension. + * src/lex.h (token_e): New tokens tok_hdrext and tok_srcext. + +2001-08-06 Marc Autret + + * configure.in: Bump to 1.28c. + * doc/bison.texinfo: Texinfo thingies. + +2001-08-04 Pascal Bart + + * tests/atconfig.in (CPPFLAGS): Add. + * tests/calc.at (AT_CHECK): Use CPPFLAGS. + +2001-08-03 Akim Demaille + + Version 1.28b. + +2001-08-03 Akim Demaille + + * tests/Makefile.am (check-local): Ship testsuite. + * tests/calc.at (_AT_DATA_CALC_Y): Prototype all the functions. + Include `string.h'. + +2001-08-03 Akim Demaille + + * configure.in: Try using -Wformat when compiling. + +2001-08-03 Akim Demaille + + * configure.in: Bump to 1.28b. + +2001-08-03 Akim Demaille + + * src/complain.c: Adjust strerror_r portability issues. + +2001-08-03 Akim Demaille + + Version 1.28a. + +2001-08-03 Akim Demaille + + * src/getargs.c, src/getarg.h (skeleton)): Constify. + * src/lex.c (literalchar): Avoid name clashes on `buf'. + * src/getargs.c: Include complain.h. + * src/files.c, src/files.h (skeleton_find): Avoid name clashes. + * lib/quotearg.c, lib/quotearg.h: Update from fileutils 4.1. + +2001-08-03 Akim Demaille + + * src/reader.c (readgram): Display hidden chars in error messages. + +2001-08-03 Akim Demaille + + Update to gettext 0.10.39. + +2001-08-03 Akim Demaille + + * lib/strspn.c: New. + +2001-08-01 Marc Autret + + * doc/bison.texinfo: Update. + * doc/bison.1 (mandoc): Update. + * src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove .c and .h. + * src/files.c: Support output files extensions computing. + (src_extension): New static variable. + (header_extension): New static variable. + (tr): New function. + (get_extension_index): New function, gets the index of an extension + filename in a string. + (compute_exts_from_gf): New function, computes extensions from the + grammar file extension. + (compute_exts_from_src): New functions, computes extensions from the + C source file extension, file given by ``-o'' option. + (compute_base_names): Update. + (output_files): Update. + +2001-08-01 Robert Anisko + + * doc/bison.texi: Document @$. + (Locations): New section. + +2001-07-18 Akim Demaille + + * Makefile.maint, GNUmakefile: New, from Autoconf 2.52. + * config/prev-version.txt, config/move-if-change: New. + * Makefile.am: Adjust. + +2001-07-08 Pascal Bart + + * src/bison.simple (yyparse): Suppress warning `comparaison + between signed and unsigned'. + +2001-07-05 Pascal Bart + + * src/getargs.h (raw_flag): Remove. + * src/getargs.c: Die on `-r'/`--raw'. + * src/lex.c (parse_percent_token): Die on `%raw'. + * src/reader.c (output_token_defines): Suppress call to `raw_flag'. + * tests/calc.at: Suppress test with option `--raw'. + +2001-07-14 Akim Demaille + + * config/: New. + * configure.in: Require Autoconf 2.50. + Update to gettext 0.10.38. + +2001-03-16 Akim Demaille + + * doc/bison.texinfo: ANSIfy the examples. + +2001-03-16 Akim Demaille + + * getargs.c (skeleton): New variable. + (longopts): --skeleton is a new option. + (shortopts, getargs): -S is a new option. + * getargs.h: Declare skeleton. + * output.c (output_parser): Use it. + +2001-03-16 Akim Demaille + + * m4/strerror_r.m4: New. + * m4/error.m4: Run AC_FUNC_STRERROR_R. + * lib/error.h, lib/error.c: Update. + +2001-03-16 Akim Demaille + + * src/getargs.c (longopts): Clean up. + +2001-02-21 Akim Demaille + + * src/reader.c (gensym): `gensym_count' is your own. + Use a static buf to create the symbol name, as token_buffer is no + longer a buffer. + +2001-02-08 Akim Demaille + + * src/conflicts.c (conflict_report): Be sure not to append to res + between two calls, which could happen if both first sprintf were + skipped, but not the first cp += strlen. + +2001-02-08 Akim Demaille + + * lib/memchr.c, lib/stpcpy.c, lib/strndup.c, lib/strnlen.c: + New, from fileutils 4.0.37. + * configure.in: Require Autoconf 2.49c. I took some time before + making this decision. This is the only way out for portability + issues in Bison, it would mean way too much duplicate effort to + import in Bison features implemented in 2.49c since 2.13. + AC_REPLACE_FUNCS and AC_CHECK_DECLS the functions above. + +2001-02-02 Akim Demaille + + * lib/malloc.c, lib/realloc.c: New, from the fileutils 4.0.37. + * lib/xalloc.h, lib/xmalloc.c: Update. + +2001-01-19 Akim Demaille + + Get rid of the ad hoc handling of token_buffer in the scanner: use + the obstacks. + + * src/lex.c (token_obstack): New. + (init_lex): Initialize it. No longer call... + (grow_token_buffer): this. Remove it. + Adjust all the places which used it to use the obstack. + +2001-01-19 Akim Demaille + + * src/lex.h: Rename all the tokens: + s/\bENDFILE\b/tok_eof/g; + s/\bIDENTIFIER\b/tok_identifier/g; + etc. + Let them be enums, not #define, to ease debugging. + Adjust all the code. + +2001-01-18 Akim Demaille + + * src/lex.h (MAXTOKEN, maxtoken, grow_token_buffer): Remove, private. + * src/lex.c (maxtoken, grow_token_buffer): Static. + +2001-01-18 Akim Demaille + + Since we now use obstacks, more % directives can be enabled. + + * src/lex.c (percent_table): Also accept `%yacc', + `%fixed_output_files', `%defines', `%no_parser', `%verbose', and + `%debug'. + Handle the actions for `%semantic_parser' and `%pure_parser' here, + instead of returning a token. + * src/lex.h (SEMANTIC_PARSER, PURE_PARSER): Remove, unused. + * src/reader.c (read_declarations): Adjust. + * src/files.c (open_files): Don't call `compute_base_names', don't + compute `attrsfile' since they depend upon data which might be + *in* the input file now. + (output_files): Do it here. + * src/output.c (output_headers): Document the fact that this patch + introduces a guaranteed SEGV for semantic parsers. + * doc/bison.texinfo: Document them. + * tests/suite.at: Exercise these %options. + +2000-12-20 Akim Demaille + + Also handle the output file (--verbose) with obstacks. + + * files.c (foutput): Remove. + (output_obstack): New. + Adjust all dependencies. + * src/conflicts.c: Return a string. + * src/system.h (obstack_grow_string): Rename as... + (obstack_sgrow): this. Be ready to work with non literals. + (obstack_fgrow4): New. + +2000-12-20 Akim Demaille + + * src/files.c (open_files): Fix the computation of short_base_name + in the case of `-o foo.tab.c'. + +2000-12-20 Akim Demaille + + * src/reader.c (copy_string, copy_comment, copy_comment2, copy_at) + (copy_dollar): Now that everything uses obstacks, get rid of the + FILE * parameters. + +2000-12-20 Akim Demaille + + * src/files.c (open_files): Actually the `.output' file is based + on the short_base_name, not base_name. + * tests/suite.at (Checking output file names): Adjust. + +2000-12-20 Akim Demaille + + * src/bison.s1: Remove, we now use directly... + * src/bison.simple: this. + * src/Makefile.am: Use pkgdata instead of data. + +2000-12-20 Akim Demaille + + * src/files.c (guard_obstack): New. + (open_files): Initialize it. + (output_files): Dump it... + * src/files.h: Export it. + * src/reader.c (copy_guard): Use it. + +2000-12-19 Akim Demaille + + * src/files.c (outfile, defsfile, actfile): Removed as global + vars. + (open_files): Don't compute them. + (output_files): Adjust. + (base_name, short_base_name): Be global. + Adjust dependencies. + +2000-12-19 Akim Demaille + + * src/files.c (strsuffix): New. + (stringappend): Be just like strcat but allocate. + (base_names): Eve out from open_files. + Try to simplify the rather hairy computation of base_name and + short_base_name. + (open_files): Use it. + * tests/suite.at (Checking output file names): New test. + +2000-12-19 Akim Demaille + + * src/system.h (obstack_grow_literal_string): Rename as... + (obstack_grow_string): this. + * src/output.c (output_parser): Recognize `%% actions' instead of + `$'. + * src/bison.s1: s/$/%% actions/. + * src/bison.hairy: Likewise. + +2000-12-19 Akim Demaille + + * src/output.c (output_parser): Compute the `#line' lines when + there are. + * src/Makefile.am (bison.simple): Be a simple copy of bison.s1. + Suggested by Hans Aberg. + +2000-12-19 Akim Demaille + + Let the handling of the skeleton files be local to the procedures + that use it. + + * src/files.c (xfopen, xfclose, skeleton_find, guardfile): No + longer static. + (fparser, open_extra_files): Remove. + (open_files, output_files): Don't take care of fparser. + * src/files.h: Adjust. + * src/output.c (output_parser): Open and close the file to the + skeleton. + * src/reader.c (read_declarations): When %semantic_parser, open + fguard. + +2000-12-19 Akim Demaille + + * src/file.h (BISON_SIMPLE, BISON_HAIRY): Move from here... + * src/system.h (BISON_SIMPLE, BISON_HAIRY): ... to here. + +2000-12-19 Akim Demaille + + * src/files.c (open_files): Yipee! We no longer need all the code + looking for `/tmp' since we have no tmp file. + +2000-12-19 Akim Demaille + + * src/system.h (EXT_TAB, EXT_OUTPUT, EXT_STYPE_H, EXT_GUARD_C): + New macros. + * src/files.c (open_files): Less dependency on MSDOS etc. + +2000-12-14 Akim Demaille + + * src/bison.s1 (YYLLOC_DEFAULT): New macro. + Provide a default definition. + Use it when executing the default @ action. + * src/reader.c (reader_output_yylsp): No longer include + `timestamp' and `text' in the default YYLTYPE. + +2000-12-12 Akim Demaille + + * src/reader.c (copy_definition, parse_union_decl, copy_action) + (copy_guard): Quote the file names. + Reported by Laurent Mascherpa. + +2000-12-12 Akim Demaille + + * src/output.c (output_headers, output_program, output): Be sure + to escape special characters when outputting filenames. + (ACTSTR_PROLOGUE, ACTSTR_EPILOGUE): Remove. + (output_headers): Don't depend on them, Use ACTSTR. + +2000-11-17 Akim Demaille + + * lib/obstack.h: Formatting changes. + (obstack_grow, obstack_grow0): Don't cast WHERE at all: it + prevents type checking. + (obstack_ptr_grow, obstack_ptr_grow_fast): When assigning, don't + cast the value to (void *): assigning a `foo *' to a `void *' + variable is valid. + (obstack_int_grow, obstack_int_grow_fast): Don't cast AINT to int. + * src/reader.c (parse_union_decl): Typo: use obstack_1grow to + append characters. + +2000-11-17 Akim Demaille + + * tests/Makefile.am (suite.m4, regression.m4, calc.m4): Rename + as... + (suite.m4, regression.m4, calc.m4): these. + * tests/atgeneral.m4: Update from CVS Autoconf. + +2000-11-17 Akim Demaille + + * tests/regression.m4 (%union and --defines): New test, + demonstrating a current bug in the obstack implementation. + +2000-11-17 Akim Demaille + + * src/bison.s1 (_YY_DECL_VARIABLES, YY_DECL_VARIABLES): New + macros. + Use them to declare the variables which are global or local to + `yyparse'. + +2000-11-17 Akim Demaille + + * acconfig.h: Remove, no longer used. + +2000-11-07 Akim Demaille + + * src: s/Copyright (C)/Copyright/g. + +2000-11-07 Akim Demaille + + * src/reader.c (reader): #define YYLSP_NEEDED to 1 instead of just + defining. + * src/bison.s1: s/#ifdef YYLSP_NEEDED/#if YYLSP_NEEDED/. + +2000-11-07 Akim Demaille + + * src/bison.s1 (YYLEX): Use #if instead of #ifdef. + Merge in a single CPP if/else. + +2000-11-07 Akim Demaille + + * src/output.c (output): Remove useless variables. + * lib/obstack.c (obstack_grow, obstack_grow0): Rename the second + argument `data' for consistency with the prototypes. + Qualify it `const'. + (obstack_copy, obstack_copy0): Rename the second argument as + `address' for consistency. Qualify it `const'. + * lib/obstack.h (obstack_copy, obstack_copy0, obstack_grow) + (obstack_grow0, obstack_ptr_grow, obstack_ptr_grow_fast): Qualify + `const' their input argument (`data' or `address'). + Adjust the corresponding macros to include `const' in casts. + +2000-11-03 Akim Demaille + + * src/Makefile.am (INCLUDES): s/PFILE/BISON_SIMPLE/. + s/PFILE1/BISON_HAIRY/. + Adjust dependencies. + +2000-11-03 Akim Demaille + + For some reason, this was not applied. + + * src/files.c [VMS]: No longer include `ssdef.h', no longer define + `unlink': it's no longer used. + +2000-11-03 Akim Demaille + + * src/files.c (skeleton_find): New function, eved out of... + (open_files, open_extra_files): here. + +2000-11-03 Akim Demaille + + Don't use `atexit'. + + * src/files.c (obstack_save): New function. + (done): Rename as... + (output_files): this. + Use `obstack_save'. + * src/main.c (main): Don't use `atexit' to register `done', since + it no longer has to remove tmp files, just call `output_files' + when there are no errors. + +2000-11-02 Akim Demaille + + * src/files.c [VMS]: No longer include `ssdef.h', no longer define + `unlink': it's no longer used. + * src/files.h: Formatting changes. + +2000-11-02 Akim Demaille + + Remove the last uses of mktemp and unlink/delete. + + * src/files.c (fdefines, ftable): Removed. + (defines_ostack, table_obstack): New. + Adjust dependencies of the former into uses of the latter. + * src/output.c (output_short_or_char_table, output_short_table): + Convert to using obstacks. + * src/reader.c (copy_comment2): Accept one FILE * and two + obstacks. + (output_token_defines, reader_output_yylsp): Use obstacks. + * src/system.h (obstack_fgrow3): New. + * po/POTFILES.in: Adjust. + +2000-11-01 Akim Demaille + + Change each use of `fattrs' into a use of `attrs_obstack'. + + * src/reader.c (copy_at): Typo: s/yylloc/yyloc/. + * src/files.c (fattrs): Remove. + (attrs_obstack): New. + Adjust all dependencies. + (done): If SEMANTIC_PARSER, dump attrs_obstack into attrsfile. + +2000-11-01 Akim Demaille + + Introduce obstacks. + Change each use of `faction' into a use of `action_obstack'. + + * lib/obstack.h, lib/obstack.c: New files. + * src/files.c (faction): Remove. + (action_obstack): New. + Adjust all dependencies. + +2000-10-20 Akim Demaille + + * lib/quote.h (PARAMS): New macro. Use it. + +2000-10-16 Akim Demaille + + * src/output.c (output_short_or_char_table): New function. + (output_short_table, output_token_translations): Use it. + (goto_actions): Use output_short_table. + +2000-10-16 Akim Demaille + + * src/symtab.c (bucket_new): New function. + (getsym): Use it. + + * src/output.c (output_short_table): New argument to display the + comment associated with the table. + Adjust dependencies. + (output_gram): Use it. + (output_rule_data): Nicer output layout for YYTNAME. + +2000-10-16 Akim Demaille + + * src/lex.c (read_typename): New function. + (lex): Use it. + * src/reader.c (copy_dollar): Likewise. + +2000-10-16 Akim Demaille + + * src/reader.c (copy_comment2): Expect the input stream to be on + the `/' which is suspected to open a comment, instead of being + called after `//' or `/*' was read. + (copy_comment, copy_definition, parse_union_decl, copy_action) + (copy_guard): Adjust. + +2000-10-16 Akim Demaille + + * src/reader.c (parse_expect_decl): Use `skip_white_space' and + `read_signed_integer'. + +2000-10-16 Akim Demaille + + * src/reader.c (copy_dollar): New function. + (copy_guard, copy_action): Use it. + +2000-10-16 Akim Demaille + + * lib/quote.h, lib/quote.c, lib/quotearg.h, lib/quotearg.c: + * m4/prereq.m4, m4/c-bs-a.m4, m4/mbstate.m4: + New files, from Fileutils 4.0.27. + * src/main.c (printable_version): Remove. + * src/lex.c, src/reader.c: Use `quote'. + +2000-10-04 Akim Demaille + + * lib/error.c, lib/error.h: New files, needed by xmalloc.c. + +2000-10-04 Akim Demaille + + * doc/bison.texinfo: Various typos spotted by Neil Booth. + +2000-10-04 Akim Demaille + + When a literal string is used to define two different tokens, + `bison -v' segfaults. + Reported by Piotr Gackiewicz, and fixed by Neil Booth. + + * tests/regression.m4: New file. + Include the core of the sample provided by Piotr Gackiewicz. + * src/reader.c (parse_token_decl): Diagnose bad cases, and proceed + properly. + +2000-10-04 Akim Demaille + + * src/reader.c (parse_expect_decl): Keep `count' within the size + of `buffer'. + From Neil Booth. + +2000-10-02 Paul Eggert + + * bison.s1 (yyparse): Assign the default value + unconditionally, to avoid a GCC warning and make the parser a + tad smaller. + +2000-10-02 Akim Demaille + + * src/getargs.c (getargs): Don't dump `--help' on unrecognized + options. + +2000-10-02 Akim Demaille + + * src/derives.c, src/print.c, src/reduce.c: To ease the + translation, move some `\n' out of the translated strings. + +2000-10-02 Akim Demaille + + The location tracking mechanism is precious for parse error + messages. Nevertheless, it is enabled only when `@n' is used in + the grammar, which is a different issue (you can use it in error + message, but not in the grammar per se). Therefore, there should + be another means to enable it. + + * src/getargs.c (getargs): Support `--locations'. + (usage): Report it. + * src/getargs.h (locationsflag): Export it. + * src/lex.c (percent_table): Support `%locations'. + * src/reader.c (yylsp_needed): Remove this variable, now replaced + with `locationsflag'. + * doc/bison.texinfo: Document `--locations' and `%locations'. + Sort the options. + * tests/calc.m4: Test it. + + For regularity of the names, replace each + (nolineflag, toknumflag, rawtokenumflag, noparserflag): with... + (no_lineflag, token_tableflag, rawflag, no_parserflag): this. + In addition replace each `flag' with `_flag'. + +2000-10-02 Akim Demaille + + Also test parse error messages, including with YYERROR_VERBOSE. + + * tests/calc.m4 (calc.y): Add support for `exp = exp' (non + associative). + Use it to check the computations. + Use it to check `nonassoc' is honored. + (AT_DATA_CALC_Y): Equip `calc.y' with YYERROR_VERBOSE when passed + `--yyerror-verbose'. + (_AT_CHECK_CALC): Adjust to this option. + (_AT_CHECK_CALC_ERROR): New macro to check parse error messages. + +2000-10-02 Akim Demaille + + Test also `--verbose', `--defines' and `--name-prefix'. Testing + the latter demonstrates a flaw in the handling of non debugging + parsers introduced by myself on 2000-03-16: `#define yydebug 0' + was used in order to simplify: + + #if YYDEBUG + if (yydebug) + { + ... + } + #endif + + into + + if (yydebug) + { + ... + } + + unfortunately this leads to a CPP conflict when + `--name-prefix=foo' is used since it produces `#define yydebug + foodebug'. + + * src/bison.s1 [!YYDEBUG]: Do not define yydebug. + (YYDPRINTF): New macro. + Spread its use. + * tests/calc.m4 (AT_CHECK_CALC): Do require a title, build it from + the bison options. + Also test `--verbose', `--defines' and `--name-prefix'. + +2000-10-02 Akim Demaille + + Improve the readability of the produced parsers. + + * src/bison.s1: Formatting changes. + Improve the comment related to the `$' mark. + (yydefault): Don't fall through to `yyresume': `goto' there. + * src/output.c (output_parser): When the `$' is met, skip the end + of its line. + New variable, `number_of_dollar_signs', to check there's exactly + one `$' in the parser skeleton. + +2000-10-02 Akim Demaille + + * lib/xstrdup.c: New file, from the fileutils. + * src/reader.c (parse_token_decl, get_type_name, parse_type_decl) + (parse_assoc_decl, parse_thong_decl, get_type): Use `xstrdup' + instead of strlen + xmalloc + strcpy. + * src/symtab.c (copys): Remove, use xstrdup instead. + +2000-10-02 Akim Demaille + + * src/gram.h (associativity): New enum type which replaces the + former CPP macros `RIGHT_ASSOC', `LEFT_ASSOC' and `NON_ASSOC' with + `right_assoc', `left_assoc' and `non_assoc'. + Adjust all dependencies. + * src/reader.c: Formatting changes. + (LTYPESTR): Don't define it, use it as a literal in + `reader_output_yylsp'. + * src/symtab.h (symbol_class): New enum type which replaces the + former CPP macros `SUNKNOWN', `STOKEN and `SNTERM' with + `sunknown', `stoken and `snterm'. + +2000-10-02 Akim Demaille + + * src/getargs.c (fixed_outfiles): Rename as... + (yaccflag): for consistency and accuracy. + Adjust dependencies. + +2000-10-02 Akim Demaille + + Use the more standard files `xalloc.h' and `xmalloc.c' instead of + Bison's `allocate.c' and `alloc.h'. This patch was surprisingly + difficult and introduced a lot of core dump. It turns out that + Bison used an implementation of `xmalloc' based on `calloc', and + at various places it does depend upon the initialization to 0. I + have not tried to isolate the pertinent places, and all the former + calls to Bison's `xmalloc' are now using `XCALLOC'. Someday, + someone should address this issue. + + * src/allocate.c, src/alloc.h, m4/bison-decl.m4: Remove. + * lib/xmalloc.c, lib/xalloc.h, m4/malloc.m4, m4/realloc.m4: New + files. + Adjust dependencies. + * src/warshall.h: New file. + Propagate. + +2000-10-02 Akim Demaille + + Various anti-`extern in *.c' changes. + + * src/system.h: Include `assert.h'. + +2000-10-02 Akim Demaille + + * src/state.h (nstates, final_state, first_state, first_shift) + (first_reduction): Move their exportation from here... + * src/LR0.h: to here. + Adjust dependencies. + * src/getargs.c (statisticsflag): New variable. + Add support for `--statistics'. + Adjust dependencies. + + Remove a lot of now useless `extern' statements in most files. + +2000-10-02 Akim Demaille + + * src/LR0.h: New file. + Propagate its use. + +2000-10-02 Akim Demaille + + * src/print.h: New file. + Propagate its use. + * src/print.c: Formatting and ordering changes. + (verbose, terse): Replace with... + (print_results): this new function. + Adjust dependencies. + +2000-10-02 Akim Demaille + + * src/conflicts.c (conflict_report): New function. + (conflict_log, verbose_conflict_log): Replace with... + (print_conflicts): this function. + Adjust dependencies. + * src/conflicts.h: New file. + Propagate its inclusion. + +2000-10-02 Akim Demaille + + * src/nullable.h: New file. + Propagate its inclusion. + * src/nullable.c: Formatting changes. + +2000-10-02 Akim Demaille + + * src/reduce.h: New file. + Propagate its inclusion. + * src/reduce.c: Topological sort and other formatting changes. + (bool, TRUE, FALSE): Move their definition to... + * src/system.h: here. + +2000-10-02 Akim Demaille + + * src/files.c: Formatting changes. + (tryopen, tryclose, openfiles): Rename as... + (xfopen, xfclose, open_files): this. + (stringappend): static. + * src/files.h: Complete the list of exported symbols. + Propagate its use. + +2000-10-02 Akim Demaille + + * src/reader.h: New file. + Propagate its use instead of tedious list of `extern' and + prototypes. + * src/reader.c: Formatting changes, topological sort, + s/register//. + +2000-10-02 Akim Demaille + + * src/lex.h: Prototype `lex.c' exported functions. + * src/reader.c: Adjust. + * src/lex.c: Formatting changes. + (safegetc): Rename as... + (xgetc): this. + +2000-10-02 Akim Demaille + + * src/lalr.h: New file. + Propagate its inclusion instead of prototypes and `extern'. + * src/lalr.c: Formatting changes, topological sorting etc. + +2000-10-02 Akim Demaille + + * src/output.c (token_actions): Introduce a temporary array, + YYDEFACT, that makes it possible for this function to use + output_short_table. + +2000-10-02 Akim Demaille + + `user_toknums' is output as a `short[]' in `output.c', while it is + defined as a `int[]' in `reader.c'. For consistency with the + other output tables, `user_toknums' is now defined as a table of + shorts. + + * src/reader.c (user_toknums): Be a short table instead of an int + table. + Adjust dependencies. + + Factor the short table outputs. + + * src/output.c (output_short_table): New function. + * src/output.c (output_gram, output_stos, output_rule_data) + (output_base, output_table, output_check): Use it. + +2000-10-02 Akim Demaille + + * src/output.c (output): Topological sort of the functions, in + order to get rid of the `static' prototypes. + No longer use `register'. + * src/output.h: New file. + Propagate its inclusion in files explicitly prototyping functions + from output.c. + +2000-09-21 Akim Demaille + + * src/atgeneral.m4: Update from Autoconf. + +2000-09-21 Akim Demaille + + * src/closure.h: New file. + * src/closure.c: Formatting changes, topological sort over the + functions, use of closure.h. + (initialize_closure, finalize_closure): Rename as... + (new_closure, free_closure): these. Adjust dependencies. + * src/LR0.c: Formatting changes, topological sort, use of + cloture.h. + (initialize_states): Rename as... + (new_states): this. + * src/Makefile.am (noinst_HEADERS): Adjust. + +2000-09-20 Akim Demaille + + * src/acconfig.h: Don't protect config.h against multiple + inclusion. + Don't define PARAMS. + * src/system.h: Define PARAMS. + Remove some of the ad-hoc CPP magic for DOS, VMS etc.: this is the + purpose of config.h. system.h must not try to fix wrong + definitions in config.h. + +2000-09-20 Akim Demaille + + * src/derives.h: New file. + * src/main.c, src/derives.h: Use it. + Formatting changes. + * src/Makefile.am (noinst_HEADERS): Adjust. + +2000-09-20 Akim Demaille + + * tests/atgeneral.m4: Update from Autoconf. + * tests/calc.m4 (_AT_DATA_CALC_Y, AT_DATA_CALC_Y, _AT_CHECK_CALC) + (AT_CHECK_CALC): New macros. + Use these macros to test bison with options `', `--raw', + `--debug', `--yacc', `--yacc --debug'. + +2000-09-19 Akim Demaille + + * src/output.c: Formatting changes. + * src/machine.h: Remove, leaving its contents in... + * src/system.h: here. + Include stdio.h. + Adjust all dependencies on stdio.h and machine.h. + * src/getargs.h: New file. + Let all `extern' declarations about getargs.c be replaced with + inclusion of `getargs.h'. + * src/Makefile.am (noinst_HEADERS): Adjust. + + * tests/calc.m4 (yyin): Be initialized in main, not on the global + scope. + (yyerror): Returns void, not int. + * doc/bison.texinfo: Formatting changes. + +2000-09-19 Akim Demaille + + * tests/calc.m4 (calc.y): Do not assign to stdin, as it's not + portable. + +2000-09-18 Akim Demaille + + * configure.in: Append WARNING_CFLAGS to CFLAGS. + * src/Makefile.am (INCLUDES): Don't. + Be ready to fetch headers in lib/. + +2000-09-18 Akim Demaille + + * doc/bison.texinfo: Update the copyright. + ANSIfy and GNUify the examples. + Remove the old menu. + +2000-09-18 Akim Demaille + + First set of tests: use the `calc' example from the documentation. + + * src/bison.s1 (yyparse): Condition the code using `yytname' which + is defined only when YYDEBUG is. + * m4/atconfig.m4 (AT_CONFIG): Adjust to Autoconf 2.13. + * src/files.c (tryopen, tryclose): Formatting changes. + Move to the top and be static. + * src/reader.c (read_signed_integer): Likewise. + * tests/calc.m4: New file. + * Makefile.am, suite.m4: Adjust. + * m4/atconfig.m4: Set BISON_SIMPLE and BISON_HAIRY. + +2000-09-18 Akim Demaille + + Add support for an Autotest test suite for Bison. + + * m4/m4.m4, m4/atconfig.m4: New files. + * m4/Makefile.am (EXTRA_DIST): Adjust. + * tests/suite.m4, tests/Makefile.am, tests/atgeneral.m4: New + files. + * src/getargs.c: Display a more standard --version message. + * src/reader.c (reader): Formatting changes. + No longer depend upon VERSION_STRING. + * configure.in: No longer use `dnl'. + Set up the test suite and the new directory `tests/. + (VERSION_STRING): Remove. + +2000-04-14 Akim Demaille + + * src/reader.c (copy_comment2): New function, same as former + `copy_comment', but outputs into two FILE *. + (copy_comment): Use it. + (parse_union_decl): Use it. + (get_type, parse_start_decl): Use the same `invalid' message. + (parse_start_decl, parse_union_decl): Use the same `multiple' + message. + (parse_union_decl, copy_guard, copy_action): Use the same + `unmatched' message. + * m4/Makefile.am (EXTRA_DIST): Add `warning.m4'. + +2000-03-31 Akim Demaille + + * src/files.c (tryopen, tryclose): Move to the top. + Be static. + +2000-03-31 Akim Demaille + + * src/main.c (main): Don't call `done', exit does it. + +2000-03-31 Akim Demaille + + * allocate.c: s/return (foo)/return foo/. + * lalr.c: Likewise. + * LR0.c: Likewise. + * output.c: Likewise. + * reader.c: Likewise. + * symtab.c: Likewise. + * vmsgetargs.c: Likewise. + +2000-03-31 Akim Demaille + + Clean up the error reporting functions. + + * src/report.c: New file. + * src/report.h: Likewise. + * src/Makefile.am: Adjust. + * m4/error.m4: New file. + * m4/Makefile.am: Adjust. + * configure.in (jm_PREREQ_ERROR): Call it. + * src/main.c (int_to_string, banner, fatal_banner, warn_banner): + Remove. + (fatal, fatals): Remove. All callers use complain.c::fatal. + (warn, warni, warns, warnss, warnss): Remove. All callers use + complain.c::complain. + (toomany): Remove, use fatal instead. + * src/files.c (done): No argument, use complain_message_count. + * src/main.c (main): Register `done' to `atexit'. + + * src/getargs.c (usage): More `fputs', less `fprintf'. + +2000-03-28 Akim Demaille + + * lib/: New directory. + * Makefile.am (SUBDIRS): Adjust. + * configure.in: Adjust. + (LIBOBJS): Although not used yet, AC_SUBST it, otherwise it's + useless. + * src/alloca.c: Moved to lib/. + * src/getopt.c: Likewise. + * src/getopt1.c: Likewise. + * src/getopt.h: Likewise. + * src/ansi2knr.c: Likewise. + * src/ansi2knr.1: Likewise. + * src/Makefile.am: Adjust. + * lib/Makefile.am: New file. + +2000-03-28 Akim Demaille + + * src/getargs.c (usage): Refresh the help message. + +2000-03-17 Akim Demaille + + * src/getopt1.c: Updated from textutils 2.0e + * src/getopt.c: Likewise. + * src/getopt.h: Likewise. + +2000-03-17 Akim Demaille + + * src/Makefile.am (bison.simple): Fix the awk program: quote only + the file name, not the whole `#line LINE FILE'. + +2000-03-17 Akim Demaille + + On syntax errors, report the token on which we choked. + + * src/bison.s1 (yyparse): In the label yyerrlab, when + YYERROR_VERBOSE, add yychar in msg. + +2000-03-17 Akim Demaille + + * src/reader.c (copy_at): New function. + (copy_guard): Use it. + (copy_action): Use it. + +2000-03-17 Akim Demaille + + Be kind to translators, save some useless translations. + + * src/main.c (banner): New function. + (fatal_banner): Use it. + (warn_banner): Use it. + +2000-03-17 Akim Demaille + + * src/reader.c (copy_definition): Use copy_string and + copy_comment. Removed now unused `match', `ended', + `cplus_comment'. + (copy_comment, copy_string): Moved, to be visible from + copy_definition. + +2000-03-17 Akim Demaille + + * src/reader.c (copy_string): Declare `static inline'. No + problems with inline, since it is checked by configure. + (copy_comment): Likewise. + +2000-03-17 Akim Demaille + + * src/reader.c (packsymbols): Formatting changes. + +2000-03-17 Akim Demaille + + * src/reader.c (copy_comment): New function, factored out from: + (copy_action): Use it. Removed now unused `match', `ended', + `cplus_comment'. + (copy_guard): Likewise. + +2000-03-17 Akim Demaille + + * src/reader.c (copy_string): New function, factored out from: + (copy_action): Use it. + (copy_guard): Likewise. + +2000-03-17 Akim Demaille + + Change the handling of @s so that they behave exactly like $s. + There is now a pseudo variable @$ (readble and writable), location + of the lhs of the rule (by default ranging from the location of + the first symbol of the rhs, to the location of the last symbol, + or, if the rhs is empty, YYLLOC). + + * src/bison.s1 [YYLSP_NEEDED] (yyloc): New variable, twin of + yyval. + (yyparse): When providing a default semantic action, provide a + default location action. + (after the $): No longer change `*YYLSP', just stack YYLOC the + same way you stack YYVAL. + * src/reader.c (read_declarations): Use warns. + (copy_guard, case '@'): Also recognize `@$', expanded as `YYLOC'. + (copy_action, case '@'): Likewise. + Use a standard error message, to save useless work from + translators. + +2000-03-17 Akim Demaille + + * src/bison.s1: Formatting and cosmetics changes. + * src/reader.c: Likewise. + Update the Copyright notice. + +2000-03-17 Akim Demaille + + * src/bison.s1 (#line): All set to `#line' only, since the + Makefile now handles them. + +2000-03-16 Akim Demaille + + * src/output.c (output_rule_data): Output the documentation of + some of the tables. + (Copyright notice): Update. + Formatting changes. + +2000-03-16 Akim Demaille + + * src/bison.s1 [!YYDEBUG]: Define yydebug to 0. This allows to + remove most `#if YYDEBUG != 0', since `if (yydebug)' is enough. + One `#if YYDEBUG' remains, since it uses variables which are + defined only if `YYDEBUG != 0'. + +2000-03-16 Akim Demaille + + * src/bison.s1 (yyparse): Reorganize the definitions of the stacks + and related variables so that the similarities are highlighted. + +2000-03-16 Akim Demaille + + * src/bison.s1: Properly indent CPP directives. + +2000-03-16 Akim Demaille + + * src/bison.s1: Properly indent the `alloca' CPP section. + +2000-03-16 Akim Demaille + + Do not hard code values of directories in `configure.in'. + Update the `configure' tool chain. + + * configure.in (XPFILE, XPFILE1, LOCALEDIR): Remove, handled by + src/makefile.am. + (VERSION_STRING): Use the third arg of AC_DEFINE_UNQUOTED. + (AC_OUTPUT): Add m4/Makefile. + Bump to bison 1.28a, 1.29 has never been released. + * acconfig.h (XPFILE, XPFILE1, LOCALEDIR): Remove, since they are + handled via src/Makefile.am. + (VERSION_STRING, PROTOTYPES, ENABLE_NLS, HAVE_CATGETS, + HAVE_GETTEXT, HAVE_LC_MESSAGES, HAVE_STPCPY): Remove, handled by + autoheader. + * Makefile.am (SUBDIRS): Add m4. + (ACLOCAL_AM_FLAGS): New variable. + (AUTOMAKE_OPTIONS): Add check-news. + * src/Makefile.am (bison.simple): Use awk to replace #line lines with + the proper line number and file name. + (DEFS): Propagate the location of bison library files and of the + locale files. + (INCLUDES): Added `-I ..' so that one can compile with srcdir != + builddir. + * acinclude.m4: Remove, replaced by the directory m4. + * m4/Makefile.am (EXTRA_DIST): New variable. + * m4/gettext.m4: New file, from the fileutils. + * m4/lcmessage.m4: Likewise + * m4/progtest.m4: Likewise. + * m4/bison-decl.m4: New file, extracted from former acinclude.m4. + +2000-03-10 Akim Demaille + + * src/closure.c: + Formatting changes of various comments. + Respect the GNU coding standards at various places. + Don't use `_()' when no translation is needed. + +1999-12-13 Jesse Thilo + + * src/files.c: + OS/2 honors TMPDIR environment variable. + +1999-12-13 Jesse Thilo + + * doc/bison.texinfo: Tweaked spelling and grammar. + Updated ISBN. + Removed reference to price of printed copy. + Mention BISON_SIMPLE and BISON_HAIRY. + +1999-12-13 Jesse Thilo + + * configure.in, NEWS: + Bison 1.29 released. + +1999-10-27 Jesse Thilo + + * doc/.cvsignore, doc/Makefile.am, doc/refcard.tex: + Added reference card. + +1999-07-26 Jesse Thilo + + * po/ru.po: Added Russian translation. + +1999-07-26 Jesse Thilo + + * configure.in: Added Russian translation. + +1999-07-06 Jesse Thilo + + * configure.in, NEWS, README: + Released version 1.28. + +1999-06-14 Jesse Thilo + + * src/system.h: + Squashed redefinition warning on some systems. + + * src/getargs.c, src/Makefile.am, src/reader.c, src/version.c: + Have configure build version string instead of relying on ANSI string + concatentation. + +1999-06-14 Jesse Thilo + + * po/POTFILES.in: Got rid of version.c. + +1999-06-14 Jesse Thilo + + * acconfig.h, configure.in: + Have configure build version string instead of relying on ANSI string + concatentation. + +1999-06-08 Jesse Thilo + + * doc/bison.1: + Dropped mention of `+' for long-named options. + +1999-05-30 Jesse Thilo + + * src/files.c: Added for unlink(). + + * src/Makefile.am, src/system.h: + I18n fixes. + +1999-05-30 Jesse Thilo + + * README: Added a FAQ list. + + * configure.in, acconfig.h: + I18n fixes. + +1999-05-30 Jesse Thilo + + * doc/FAQ, doc/Makefile.am: + Added a FAQ list. + +1999-05-19 Jesse Thilo + + * src/alloc.h, src/symtab.h, src/version.c: + Protected inclusion of "config.h" with HAVE_CONFIG_H. + +1999-04-18 Jesse Thilo + + * src/.cvsignore, src/Makefile.am: + Reorganized: sources in `src', documentation in `doc'. + + * src/lex.c (literalchar): + fixed the code for escaping double quotes (thanks + Jonathan Czisny.) + +1999-04-18 Jesse Thilo + + * po/de.po, po/es.po, po/fr.po, po/nl.po, po/POTFILES.in: + Adjusted paths to reflect directory reorganization. + +1999-04-18 Jesse Thilo + + * doc/.cvsignore, doc/Makefile.am: + Reorganized: sources in `src', documentation in `doc'. + +1999-04-18 Jesse Thilo + + * configure.in: + Updated AC_INIT file to reflect directory reorganization. + + * configure.in, .cvsignore, Makefile.am, POTFILES.in: + Reorganized: sources in `src', documentation in `doc'. + +1999-04-13 Jesse Thilo + + * src/allocate.c: + Don't declare calloc() and realloc() if not necessary. + +1999-04-13 Jesse Thilo + + * configure.in, acconfig.h, acinclude.m4: + Don't declare calloc() and realloc() if not necessary. + +1999-03-23 Jesse Thilo + + * po/.cvsignore: Added i18n support. + +1999-03-23 Jesse Thilo + + * acconfig.h, configure.in, Makefile.am: + Added i18n support. + +1999-03-22 Jesse Thilo + + * src/bison.s1: Fixed #line numbers. + +1999-03-15 Jesse Thilo + + * po/es.po, po/fr.po, po/nl.po, po/de.po: + Added PO files from Translation Project. + +1999-03-03 Jesse Thilo + + * Makefile.am: + Added support for non-ANSI compilers (ansi2knr). + +1999-02-16 Jesse Thilo + + * configure.in: Bumped version number to 1.27. + + * Makefile.am: + Added `bison.simple' to list of files removed by `make distclean'. + +1999-02-12 Jesse Thilo + + * src/files.c, src/files.h: + Defined locations of parser files in config.h instead of Makefile. + +1999-02-12 Jesse Thilo + + * acconfig.h, acinclude.m4, configure.in, Makefile.am: + Defined locations of parser files in config.h instead of Makefile. + +1999-02-09 Jesse Thilo + + * Makefile.am: + Removed inappropriate use of $< macro. + +1999-02-05 Jesse Thilo + + * po/Makefile.in.in, po/POTFILES.in: + Add `po' directory skeleton. + +1999-01-27 Jesse Thilo + + * README: Document help-bison list. + + * configure.in: Add check for mkstemp(). + +1999-01-20 Jesse Thilo + + * src/conflicts.c, src/LR0.c, src/output.c, src/reader.c: + Hush a few compiler warnings. + + * src/files.c: + Add tryclose(), which verifies that fclose was successful. + Hush a couple of compiler warnings. + +1999-01-20 Jesse Thilo + + * Makefile.am, OChangeLog: + ChangeLog is now automatically generated. Include the old version as + OChangeLog. + +1999-01-14 Jesse Thilo + + * src/gram.h, src/lalr.c, src/lex.c, src/lex.h, src/machine.h, src/main.c, src/nullable.c, src/output.c, src/print.c, src/reader.c, src/reduce.c, src/state.h, src/symtab.c, src/symtab.h, src/types.h, src/vmsgetargs.c, src/warshall.c, src/allocate.c, src/alloc.h, src/bison.s1, src/closure.c, src/conflicts.c, src/derives.c, src/files.c, src/files.h, src/getargs.c, src/gram.c, src/LR0.c: + Update FSF address. + +1999-01-14 Jesse Thilo + + * doc/bison.texinfo: Fix formatting glitch. + + * doc/bison.texinfo: Update FSF address. + +1999-01-14 Jesse Thilo + + * acconfig.h: Update FSF address. + +1999-01-08 Jesse Thilo + + * src/system.h: + Don't define PACKAGE here, since config.h defines it. + +1998-12-30 Jesse Thilo + + * src/reader.c: Update copyright date. + + * src/main.c: + Ditch sprintf to statically-sized buffers in fatal/warn functions in + favor of output directly to stderr (avoids buffer overruns). + + * src/reader.c: Some checks for premature EOF. + + * src/allocate.c, src/alloc.h, src/closure.c, src/conflicts.c, src/derives.c, src/getargs.c, src/gram.c, src/lalr.c, src/lex.c, src/LR0.c, src/main.c, src/nullable.c, src/output.c, src/print.c, src/reduce.c, src/symtab.c, src/symtab.h, src/warshall.c: + Use prototypes if the compiler understands them. + + * src/files.c: Honor TMPDIR on Unix hosts. + Use prototypes if the compiler understands them. + + * src/reader.c: + Fix a couple of buffer overrun bugs. + Use prototypes if the compiler understands them. + + * src/system.h: Include unistd.h and ctype.h. + Use #ifdef instead of #if for NLS symbols. + +1998-12-30 Jesse Thilo + + * doc/bison.texinfo: + Delete comment "consider using @set for edition number, etc..." since + we now are doing so. + +1998-12-30 Jesse Thilo + + * configure.in: + Use prototypes if the compiler understands them. + + * NEWS: Document 1.26 highlights. + + * Makefile.am: Require Automake 1.3 or later. + + * acconfig.h: + Use prototypes if the compiler understands them. + +1998-12-29 Jesse Thilo + + * src/version.c: + Use VERSION symbol from automake for version number. + +1998-12-29 Jesse Thilo + + * acconfig.h, configure.in, version.cin: + Use VERSION symbol from automake for version number. + +1998-11-28 Jesse Thilo + + * Makefile.am: + Distribute original version of simple parser (bison.s1), not built + version (bison.simple). + +1998-11-28 Jesse Thilo + + * doc/bison.texinfo: Add info dir entry. + + * doc/bison.texinfo: + Let automake put version number into documentation. + +1998-11-26 Jesse Thilo + + * src/bison.cld, src/build.com, src/vmshlp.mar: + Add non-RCS files from /gd/gnu/bison. + +1998-11-26 Jesse Thilo + + * doc/bison.1: + Document the BISON_HAIRY and BISON_SIMPLE variables. + +1998-11-25 Jesse Thilo + + * src/version.c: Build version.c automatically. + + * src/reader.c: + Fix token numbering (used to start at 258, not 257). + + * src/system.h: Include config.h. + + * src/getargs.c: Update bug report address. + + * src/alloca.c, src/getopt1.c, src/getopt.c, src/getopt.h: + Get latest copies of alloca.c, getopt.c, getopt.h, getopt1.c from gnu.org. + +1998-11-25 Jesse Thilo + + * Makefile.am: + Rename bison.simple to bison.s1 (bison.simple is then built from bison.s1). + + * configure.in, version.cin: + Build version.c automatically. + + * AUTHORS: Add AUTHORS file. + + * README: Update bug report address. + + * bison.simple: + Rename bison.simple to bison.s1 (bison.simple is then built from bison.s1). + + * configure.in, Makefile.am, Makefile.in, stamp-h.in: + Add automake stuff. + +1998-11-25 Jesse Thilo + + * doc/bison.texinfo: Clean up some formatting. + +1998-05-05 Richard Stallman + + * doc/bison.texinfo: + Explain better why to make a pure parser. + +1998-01-05 Richard Stallman + + * src/files.c (openfiles): + [_WIN32 && !__CYGWIN32__] Use TEMP or Temp to + find a temporary directory, if possible. Do not unlink files while + they are open. + +1997-08-25 Richard Stallman + + * src/reader.c (stack_offset;): + Change some warni to warns. + + * src/lex.c (literalchar): Use warns, not warni. + +1997-06-28 Richard Stallman + + * src/bison.s1: Add a Bison version comment. + + * src/main.c (fatal, warn, berror): + Use program_name. + +1997-06-28 Richard Stallman + + * Makefile.in (bison_version): New variable. + (dist): Use that variable. + (bison.s1): Substitute the Bison version into bison.simple. + + * bison.simple: Add a Bison version comment. + +1997-06-18 Richard Stallman + + * src/main.c (fatal, warn, berror): + Make error messages standard. + (toomany): Improve error message text. + + * src/LR0.c, src/closure.c, src/conflicts.c, src/derives.c, src/files.c, src/lalr.c, src/lex.c, src/nullable.c, src/output.c, src/print.c, src/reader.c, src/reduce.c, src/symtab.c: + new.h renamed to alloc.h. + +1997-06-18 Richard Stallman + + * Makefile.in: new.h renamed to alloc.h. + +1997-05-24 Richard Stallman + + * src/lex.c (literalchar): + Fix the code for escaping \, " and '. + + (lex): Avoid trouble when there are many chars + to discard in a char literal with just several chars in it. + +1997-05-17 Richard Stallman + + * src/bison.s1: + Use malloc, if using alloca is troublesome. + (YYSTACK_USE_ALLOCA): New flag macro. + Define it for some systems and compilers. + (YYSTACK_ALLOC): New macro. + (yyparse): Use YYSTACK_ALLOC to allocate stack. + If it was malloc'd, free it. + +1997-05-17 Richard Stallman + + * bison.simple: + Use malloc, if using alloca is troublesome. + (YYSTACK_USE_ALLOCA): New flag macro. + Define it for some systems and compilers. + (YYSTACK_ALLOC): New macro. + (yyparse): Use YYSTACK_ALLOC to allocate stack. + If it was malloc'd, free it. + +1997-04-23 Richard Stallman + + * src/bison.s1: + (alloca) [__hpux]: Always define as __builtin_alloca. + +1997-04-23 Richard Stallman + + * bison.simple: + (alloca) [__hpux]: Always define as __builtin_alloca. + +1997-04-22 Richard Stallman + + * src/bison.s1: + [__hpux]: Include alloca.h (right for HPUX 10) + instead of declaring alloca (right for HPUX 9). + + * src/bison.s1 (__yy_memcpy): + Declare arg `count' as unsigned int. + (yyparse): Cast third arg to __yy_memcpy to unsigned int. + +1997-04-22 Richard Stallman + + * bison.simple: + [__hpux]: Include alloca.h (right for HPUX 10) + instead of declaring alloca (right for HPUX 9). + + * bison.simple (__yy_memcpy): + Declare arg `count' as unsigned int. + (yyparse): Cast third arg to __yy_memcpy to unsigned int. + +1997-01-03 Richard Stallman + + * src/allocate.c: [__STDC__ or _MSC_VER]: + Declare calloc and realloc to return void *. + +1997-01-02 Richard Stallman + + * src/system.h: + [_MSC_VER]: Include stdlib.h and process.h. + [_MSC_VER] (getpid): Define as macro--translate it to _getpid. + + * src/main.c (main): Return FAILURE as a value. + (printable_version): Declare arg as int, not char. + +1997-01-02 Richard Stallman + + * Makefile.in (dist): + Explicitly check for symlinks, and copy them. + +1996-12-19 Richard Stallman + + * src/files.c: + [_MSC_VER] (XPFILE, XPFILE1): Define, if not already defined. + +1996-12-18 Paul Eggert + + * src/bison.s1 (yyparse): + If __GNUC__ and YYPARSE_PARAM are both defined, + declare yyparse to have a void * argument. + +1996-12-18 Paul Eggert + + * bison.simple (yyparse): + If __GNUC__ and YYPARSE_PARAM are both defined, + declare yyparse to have a void * argument. + +1996-12-17 Richard Stallman + + * src/reduce.c (nbits): Add some casts. + +1996-08-12 Richard Stallman + + * src/bison.s1: Test _MSDOS as well as _MSDOS_. + +1996-08-12 Richard Stallman + + * bison.simple: Test _MSDOS as well as _MSDOS_. + +1996-07-31 Richard Stallman + + * src/bison.s1: + [__sun && __i386]: Include alloca.h. + +1996-07-31 Richard Stallman + + * bison.simple: + [__sun && __i386]: Include alloca.h. + +1996-07-30 Richard Stallman + + * src/bison.s1: Comment change. + + * src/bison.s1: Test _MSDOS_, not MSDOS. + +1996-07-30 Richard Stallman + + * bison.simple: Comment change. + + * bison.simple: Test _MSDOS_, not MSDOS. + +1996-06-01 Richard Stallman + + * src/reduce.c, src/reader.c, src/print.c, src/output.c, src/nullable.c, src/lex.c, src/lalr.c, src/getargs.c, src/derives.c, src/conflicts.c, src/closure.c, src/allocate.c: + Insert `_' macro around many string constants. + + * src/main.c: + Insert `_' macro around many string constants. + + (main): Call setlocale, bindtextdomain and textdomain. + + * src/system.h: [HAVE_LOCALE_H]: Include locale.h. + [! HAVE_LOCALE_H] (setlocale): Define as no-op. + [ENABLE_NLS]: Include libintl.h. + [ENABLE_NLS] (gettext): Define. + [! ENABLE_NLS] (bintextdomain, textdomain, _): Consolation definitions. + (N_, PACKAGE, LOCALEDIR): New macros. + +1996-06-01 Richard Stallman + + * POTFILES.in: New file. + + * Makefile.in (allocate.o): + Define target explicitly. + + * Makefile.in (CFLAGS): Set to @CFLAGS@. + (LDFLAGS): Set to @LDFLAGS@. + (configure): Run autoconf only if preceding `cd' succeeds. + (bison.s1): Redirect output to temporary file then move the + temporary to the target, rather than redirecting directly to bison.s1. + (clean): Remove config.status and config.log. + (distclean): Don't remove config.status here. + +1996-05-12 Richard Stallman + + * src/bison.s1: + (__yy_memcpy) [__cplusplus]: Reorder declarations of variables f and t. + +1996-05-12 Richard Stallman + + * bison.simple: + (__yy_memcpy) [__cplusplus]: Reorder declarations of variables f and t. + +1996-05-11 Richard Stallman + + * src/bison.s1 (__yy_memcpy): + Really reorder the args, as was supposedly done on Feb 14 1995. + (yyparse): Calls changed accordingly. + +1996-05-11 Richard Stallman + + * Makefile.in (dist): Don't use $(srcdir). + + * bison.simple (__yy_memcpy): + Really reorder the args, as was supposedly done on Feb 14 1995. + (yyparse): Calls changed accordingly. + +1996-01-27 Richard Stallman + + * src/output.c (output_rule_data): + Test YYERROR_VERBOSE in the conditional + around the definition of ttyname. + +1995-12-29 Richard Stallman + + * src/bison.s1: + Fix line numbers in #line commands. + +1995-12-29 Richard Stallman + + * bison.simple: + Fix line numbers in #line commands. + +1995-12-27 Richard Stallman + + * src/bison.s1 (YYPARSE_PARAM_DECL): + In C++, make it always null. + (YYPARSE_PARAM_ARG): New macro. + (yyparse): Use YYPARSE_PARAM_ARG. + +1995-12-27 Richard Stallman + + * bison.simple (YYPARSE_PARAM_DECL): + In C++, make it always null. + (YYPARSE_PARAM_ARG): New macro. + (yyparse): Use YYPARSE_PARAM_ARG. + +1995-11-29 Richard Stallman + + * doc/bison.texinfo: + Describe literal string tokens, %raw, %no_lines, %token_table. + +1995-11-29 Daniel Hagerty + + * doc/bison.texinfo: Fixed update date + +1995-10-16 Richard Stallman + + * src/version.c: Version 1.25. + +1995-10-16 Richard Stallman + + * NEWS: *** empty log message *** + +1995-10-16 Richard Stallman + + * doc/bison.1, doc/bison.rnh: + Add new options. + +1995-10-15 Richard Stallman + + * src/vmsgetargs.c, src/getargs.c: + Added -n, -k, and -raw switches. + (noparserflag, toknumflag, rawtoknumflag): New variables. + + * src/symtab.h (SALIAS): + New #define for adding aliases to %token. + (struct bucket): Added `alias' field. + + * src/reduce.c (reduce_grammar): + Revise error message. + (print_notices): Remove final `.' from error message. + + * src/reader.c (reader_output_yylsp): + New function. + (readgram): Use `#if 0' around code that accepted %command + inside grammar rules: The documentation doesn't allow it, + and it will fail since the %command processors scan for the next %. + (parse_token_decl): Extended the %token + declaration to allow a multi-character symbol as an alias. + (parse_thong_decl): New function. + (read_declarations): Added %thong declarations. + (read_declarations): Handle NOOP to deal with allowing + % declarations as another means to specify the flags. + (readgram): Allow %prec prior to semantics embedded in a rule. + (skip_to_char, read_declarations, copy_definition) + (parse_token_decl, parse_start_decl, parse_type_decl) + (parse_assoc_decl, parse_union_decl, parse_expect_decl) + (get_type_name, copy_guard, copy_action, readgram) + (get_type, packsymbols): Revised most error messages. + Changed `fatal' to `warnxxx' to avoid aborting for error. + Revised and use multiple warnxxx functions to avoid using VARARGS1. + (read_declarations): Improve the error message for + an invalid character. Do not abort. + (read_declarations, copy_guard, copy_action): Use + printable_version to avoid unprintable characters in printed output. + (parse_expect_decl): Error if argument to %expect exceeds 10 digits. + (parse_token_decl, parse_assoc_decl, parse_type_decl, get_type): + Allow the type of a non-terminal can be given + more than once, as long as all specifications give the same type. + + * src/output.c: + (output_headers, output_trailers, output, output_gram) + (output_rule_data): Implement noparserflag variable. + Implement toknumflag variable. + (output): Call reader_output_yylsp to output LTYPESTR. + + * src/main.c (main): + If reader sees an error, don't process the grammar. + (fatals): Updated to not use VARARGS1. + (printable_version, int_to_string, warn, warni, warns, warnss) + (warnsss): New error reporting functions. Avoid abort for error. + + * src/lex.h: + Added THONG and NOOP for alias processing. + Added SETOPT for the new code that allows setting options with %flags. + + * src/lex.c: + Include getopt.h. Add some extern decls. + (safegetc): New function to deal with EOF gracefully. + (literalchar); new function to deal with reading \ escapes. + (lex): Use literalchar. + (lex): Implemented "..." tokens. + (literalchar, lex, parse_percent_token): Made tokenbuffer + always contain the token. This includes growing the token + buffer while reading an integer. + (parse_percent_token): Replaced if-else statement with percent_table. + (parse_percent_token): Added % declarations as another + way to specify the flags -n, -l, and -r. Also added hooks for + -d, -k, -y, -v, -t, -p, -b, -o, but implementation requires + major changes to files.c. + (lex) Retain in the incoming stream a character following + an incorrect '/'. + (skip_white_space, lex): Revised most error messages + and changed fatal to warn to avoid aborting. + (percent_table): Added %thong declarations. + + * src/gram.h: Comment changes. + + * src/files.c (openfiles, open_extra_files, done): + Add faction flag + and actfile file. Handle noparserflag. Both for -n switch. + + * src/conflicts.c (resolve_sr_conflict): + Remove use of alloca. + +1995-06-01 Jim Meyering + + * doc/bison.texinfo: *** empty log message *** + +1995-05-06 Richard Stallman + + * src/bison.s1: Comment change. + +1995-05-06 Richard Stallman + + * bison.simple: Comment change. + +1995-05-03 Richard Stallman + + * src/version.c: Version now 1.24. + + * src/bison.s1: Change distribution terms. + + * src/version.c: Version now 1.23. + +1995-05-03 Richard Stallman + + * doc/bison.texinfo: + Rewrite "Conditions for Using Bison". + Update version to 1.24. + +1995-05-03 Richard Stallman + + * bison.simple: Change distribution terms. + +1995-02-23 Richard Stallman + + * src/files.c: Test __VMS_POSIX as well as VMS. + +1995-02-14 Jim Meyering + + * src/bison.s1 (__yy_memcpy): + Renamed from __yy_bcopy to avoid + confusion. Reverse FROM and TO arguments to be consistent with + those of memcpy. + +1995-02-14 Jim Meyering + + * bison.simple (__yy_memcpy): + Renamed from __yy_bcopy to avoid + confusion. Reverse FROM and TO arguments to be consistent with + those of memcpy. + +1994-11-10 David J. MacKenzie + + * NEWS: reformat + + * NEWS: New file. + + * Makefile.in (DISTFILES): Include NEWS. + + * Makefile.in (DISTFILES): + Include install-sh, not install.sh. + + * configure.in: Update to Autoconf v2 macro names. + +1994-10-05 David J. MacKenzie + + * Makefile.in: fix typo + + * Makefile.in (prefix, exec_prefix): + Let configure set them. + +1994-09-28 David J. MacKenzie + + * Makefile.in: Set datadir to $(prefix)/share. + +1994-09-15 Richard Stallman + + * src/bison.s1: + Update copyright notice and GPL version. + +1994-09-15 Richard Stallman + + * bison.simple: + Update copyright notice and GPL version. + +1994-07-12 Richard Stallman + + * src/reduce.c, src/reader.c: + entered into RCS + +1994-05-05 David J. MacKenzie + + * Makefile.in: entered into RCS + +1994-03-26 Richard Stallman + + * src/bison.s1: entered into RCS + +1994-03-26 Richard Stallman + + * bison.simple: entered into RCS + +1994-03-25 Richard Stallman + + * src/main.c: entered into RCS + +1994-03-24 Richard Stallman + + * src/conflicts.c: entered into RCS + +1994-01-02 Richard Stallman + + * Makefile.in: *** empty log message *** + +1993-11-21 Richard Stallman + + * src/bison.s1: *** empty log message *** + +1993-11-21 Richard Stallman + + * doc/bison.texinfo: entered into RCS + + * doc/bison.texinfo: *** empty log message *** + +1993-11-21 Richard Stallman + + * bison.simple: *** empty log message *** + +1993-10-25 David J. MacKenzie + + * doc/bison.texinfo: *** empty log message *** + +1993-10-19 Richard Stallman + + * src/bison.s1: *** empty log message *** + +1993-10-19 Richard Stallman + + * bison.simple: *** empty log message *** + +1993-10-14 Richard Stallman + + * src/bison.s1: *** empty log message *** + +1993-10-14 Richard Stallman + + * bison.simple: *** empty log message *** + +1993-09-14 David J. MacKenzie + + * doc/bison.texinfo: *** empty log message *** + +1993-09-13 Noah Friedman + + * Makefile.in: *** empty log message *** + +1993-09-10 Richard Stallman + + * src/conflicts.c: *** empty log message *** + + * src/system.h: entered into RCS + +1993-09-10 Richard Stallman + + * doc/bison.1: entered into RCS + +1993-09-06 Noah Friedman + + * src/version.c: entered into RCS + +1993-09-06 Noah Friedman + + * Makefile.in: *** empty log message *** + +1993-07-30 David J. MacKenzie + + * Makefile.in: *** empty log message *** + +1993-07-24 Richard Stallman + + * src/bison.s1: *** empty log message *** + +1993-07-24 Richard Stallman + + * bison.simple: *** empty log message *** + +1993-07-08 David J. MacKenzie + + * Makefile.in: *** empty log message *** + +1993-07-04 Richard Stallman + + * src/bison.s1: *** empty log message *** + +1993-07-04 Richard Stallman + + * bison.simple: *** empty log message *** + +1993-06-26 David J. MacKenzie + + * src/getargs.c: entered into RCS + +1993-06-26 David J. MacKenzie + + * doc/bison.texinfo: *** empty log message *** + + * doc/bison.1: New file. + +1993-06-25 Richard Stallman + + * src/getargs.c: New file. + +1993-06-16 Richard Stallman + + * src/bison.s1: *** empty log message *** + +1993-06-16 Richard Stallman + + * bison.simple: *** empty log message *** + +1993-06-03 Richard Stallman + + * src/bison.s1: New file. + +1993-06-03 Richard Stallman + + * doc/bison.texinfo: *** empty log message *** + +1993-06-03 Richard Stallman + + * bison.simple: New file. + +1993-05-19 Richard Stallman + + * doc/bison.texinfo: New file. + +1993-05-07 Noah Friedman + + * Makefile.in: *** empty log message *** + +1993-04-28 Noah Friedman + + * src/reader.c: *** empty log message *** + +1993-04-23 Noah Friedman + + * src/alloc.h: entered into RCS + +1993-04-20 David J. MacKenzie + + * src/version.c: *** empty log message *** + + * src/files.c, src/allocate.c: + entered into RCS + + * src/reader.c: *** empty log message *** + + * src/lex.c: entered into RCS + + * src/conflicts.c: New file. + + * src/symtab.c: entered into RCS + + * src/alloc.h: New file. + + * src/LR0.c: entered into RCS + +1993-04-18 Noah Friedman + + * src/reader.c: New file. + + * src/version.c: *** empty log message *** + +1993-04-18 Noah Friedman + + * Makefile.in: *** empty log message *** + +1993-04-17 Noah Friedman + + * Makefile.in: *** empty log message *** + +1993-04-15 Richard Stallman + + * src/main.c, src/files.c: + New file. + +1993-04-15 Noah Friedman + + * configure.in: entered into RCS + + * configure.in: *** empty log message *** + + * configure.in: New file. + +1993-04-14 Richard Stallman + + * Makefile.in: New file. + +1993-04-13 Richard Stallman + + * src/version.c: New file. + +1993-03-25 Richard Stallman + + * src/output.c: entered into RCS + +1992-09-25 Richard Stallman + + * configure.bat: entered into RCS + +1992-06-22 Richard Stallman + + * src/vmsgetargs.c: entered into RCS + +1992-06-22 Richard Stallman + + * doc/bison.rnh: entered into RCS + +1992-04-20 David J. MacKenzie + + * README: entered into RCS + +1992-01-22 Richard Stallman + + * src/machine.h: entered into RCS + +1991-12-21 Richard Stallman + + * src/lalr.c, src/closure.c: + entered into RCS + +1991-12-20 Richard Stallman + + * src/state.h: entered into RCS + +1991-12-18 Richard Stallman + + * src/print.c, src/nullable.c, src/derives.c: + entered into RCS + +1991-11-03 David J. MacKenzie + + * src/warshall.c, src/types.h, src/symtab.h, src/lex.h, src/gram.c, src/gram.h, src/files.h: + entered into RCS + +1988-09-09 Richard Stallman + + * src/bison.hairy: entered into RCS + +1987-12-16 Richard Stallman + + * REFERENCES: entered into RCS + + + ----- + + Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, + 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 + Free Software Foundation, Inc. + + Copying and distribution of this file, with or without + modification, are permitted provided the copyright notice and this + notice are preserved. -- cgit v1.2.3