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| author | Richard Smith <richard-llvm@metafoo.co.uk> | 2016-02-12 01:15:33 +0000 |
|---|---|---|
| committer | Richard Smith <richard-llvm@metafoo.co.uk> | 2016-02-12 01:15:33 +0000 |
| commit | d14e35f115c7e253d25928e671411766f0f3fc76 (patch) | |
| tree | 33ef4f5d0a7baf1083689f488ecbc9957c800bbb /test/Headers | |
| parent | 25e062e55e631aafc84fd27cc9580d0065096c02 (diff) | |
<float.h>: do not define DECIMAL_DIG in -std=c89 mode; this macro was added in C99.
Patch by Jorge Teixeira!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@260639 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Headers')
| -rw-r--r-- | test/Headers/float.c | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/test/Headers/float.c b/test/Headers/float.c index f492531f39..32249d1d46 100644 --- a/test/Headers/float.c +++ b/test/Headers/float.c @@ -3,9 +3,15 @@ // RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -ffreestanding %s // expected-no-diagnostics -/* Basic conformance checks against the N1570 draft of C11 Std. */ +/* Basic floating point conformance checks against: + - N1570 draft of C11 Std. + - N1256 draft of C99 Std. + - http://port70.net/~nsz/c/c89/c89-draft.html draft of C89/C90 Std. +*/ /* - 5.2.4.2.2p11, pp. 30 + C11, 5.2.4.2.2p11, pp. 30 + C99, 5.2.4.2.2p9, pp. 25 + C89, 2.2.4.2 */ #include <float.h> @@ -68,10 +74,16 @@ #endif -#ifndef DECIMAL_DIG - #error "Mandatory macro DECIMAL_DIG is missing." -#elif DECIMAL_DIG < 10 - #error "Mandatory macro DECIMAL_DIG is invalid." +#if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) + #ifndef DECIMAL_DIG + #error "Mandatory macro DECIMAL_DIG is missing." + #elif DECIMAL_DIG < 10 + #error "Mandatory macro DECIMAL_DIG is invalid." + #endif +#else + #ifdef DECIMAL_DIG + #error "Macro DECIMAL_DIG should not be defined." + #endif #endif @@ -182,7 +194,9 @@ _Static_assert(DBL_DECIMAL_DIG == __DBL_DECIMAL_DIG__, ""); _Static_assert(LDBL_DECIMAL_DIG == __LDBL_DECIMAL_DIG__, ""); #endif +#if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) _Static_assert(DECIMAL_DIG == __DECIMAL_DIG__, ""); +#endif _Static_assert(FLT_DIG == __FLT_DIG__, ""); _Static_assert(DBL_DIG == __DBL_DIG__, ""); |