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0c05bd3a9c
note that POSIX does not specify these functions as _Noreturn, because POSIX is aligned with C99, not the new C11 standard. when POSIX is eventually updated to C11, it will almost surely give these functions the _Noreturn attribute. for now, the actual _Noreturn keyword is not used anyway when compiling with a c99 compiler, which is what POSIX requires; the GCC __attribute__ is used instead if it's available, however. in a few places, I've added infinite for loops at the end of _Noreturn functions to silence compiler warnings. presumably __buildin_unreachable could achieve the same thing, but it would only work on newer GCCs and would not be portable. the loops should have near-zero code size cost anyway. like the previous _Noreturn commit, this one is based on patches contributed by philomath.
25 lines
431 B
C
25 lines
431 B
C
#undef assert
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#if __STDC_VERSION__ >= 201112L
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#elif defined(__GNUC__)
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#define _Noreturn __attribute__((__noreturn__))
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#else
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#define _Noreturn
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#endif
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#ifdef NDEBUG
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#define assert(x) (void)0
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#else
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#define assert(x) ((x) || (__assert_fail(#x, __FILE__, __LINE__, __func__),0))
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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_Noreturn void __assert_fail (const char *, const char *, int, const char *);
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#ifdef __cplusplus
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}
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#endif
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