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(svn r17465) -Codechange: use builtin static_assert() for assert_compile() if available

This commit is contained in:
smatz 2009-09-07 21:02:10 +00:00
parent 434693b838
commit 2e2d00bee7
1 changed files with 7 additions and 3 deletions
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10
src/stdafx.h
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@ -301,12 +301,16 @@ typedef unsigned char byte;
#define PERSONAL_DIR ""
#endif
/* Compile time assertions, disabled for OS/2 or GCC < 3.4 (GCC < 3 isn't supported anymore) */
#if defined(__OS2__) || (defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ < 4)
/* Compile time assertions. Prefer c++0x static_assert() */
#if defined(__STDCXX_VERSION__) || defined(__GXX_EXPERIMENTAL_CXX0X__) || defined(__GXX_EXPERIMENTAL_CPP0X__) || defined(static_assert)
/* __STDCXX_VERSION__ is c++0x feature macro, __GXX_EXPERIMENTAL_CXX0X__ is used by gcc, __GXX_EXPERIMENTAL_CPP0X__ by icc */
#define assert_compile(expr) static_assert(expr, #expr )
#elif defined(__OS2__) || (defined(__GNUC__) && __GNUC__ == 3 && __GNUC_MINOR__ < 4)
/* Disabled for OS/2 or GCC < 3.4 (GCC < 3 isn't supported anymore) */
#define assert_compile(expr)
#else
#define assert_compile(expr) extern const int __ct_assert__[1 - 2 * !(expr)] UNUSED
#endif /* __OS2__ */
#endif
/* Check if the types have the bitsizes like we are using them */
assert_compile(sizeof(uint64) == 8);