diff options
Diffstat (limited to 'src/3rdparty/pcre/patches/pcre-r1498.patch')
-rw-r--r-- | src/3rdparty/pcre/patches/pcre-r1498.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/3rdparty/pcre/patches/pcre-r1498.patch b/src/3rdparty/pcre/patches/pcre-r1498.patch new file mode 100644 index 0000000000..8ae48a4336 --- /dev/null +++ b/src/3rdparty/pcre/patches/pcre-r1498.patch @@ -0,0 +1,45 @@ +Index: pcre_compile.c +=================================================================== +--- pcre_compile.c (revision 1497) ++++ pcre_compile.c (revision 1498) +@@ -2374,6 +2374,7 @@ + if (c == OP_RECURSE) + { + const pcre_uchar *scode = cd->start_code + GET(code, 1); ++ const pcre_uchar *endgroup = scode; + BOOL empty_branch; + + /* Test for forward reference or uncompleted reference. This is disabled +@@ -2388,24 +2389,20 @@ + if (GET(scode, 1) == 0) return TRUE; /* Unclosed */ + } + +- /* If we are scanning a completed pattern, there are no forward references +- and all groups are complete. We need to detect whether this is a recursive +- call, as otherwise there will be an infinite loop. If it is a recursion, +- just skip over it. Simple recursions are easily detected. For mutual +- recursions we keep a chain on the stack. */ ++ /* If the reference is to a completed group, we need to detect whether this ++ is a recursive call, as otherwise there will be an infinite loop. If it is ++ a recursion, just skip over it. Simple recursions are easily detected. For ++ mutual recursions we keep a chain on the stack. */ + ++ do endgroup += GET(endgroup, 1); while (*endgroup == OP_ALT); ++ if (code >= scode && code <= endgroup) continue; /* Simple recursion */ + else +- { ++ { + recurse_check *r = recurses; +- const pcre_uchar *endgroup = scode; +- +- do endgroup += GET(endgroup, 1); while (*endgroup == OP_ALT); +- if (code >= scode && code <= endgroup) continue; /* Simple recursion */ +- + for (r = recurses; r != NULL; r = r->prev) + if (r->group == scode) break; + if (r != NULL) continue; /* Mutual recursion */ +- } ++ } + + /* Completed reference; scan the referenced group, remembering it on the + stack chain to detect mutual recursions. */ |