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| author | theraven <theraven@FreeBSD.org> | 2011-12-07 15:25:48 +0000 |
|---|---|---|
| committer | theraven <theraven@FreeBSD.org> | 2011-12-07 15:25:48 +0000 |
| commit | ded93cd9e74a8cb2766f3a3f2ecaab59747c59e4 (patch) | |
| tree | 8a6278cec83d284c97957bb6df5b9f2afcd30e17 /include | |
| parent | c9b9c0a5a33422e64173fec02b4e0a586b146f11 (diff) | |
| download | FreeBSD-src-ded93cd9e74a8cb2766f3a3f2ecaab59747c59e4.zip FreeBSD-src-ded93cd9e74a8cb2766f3a3f2ecaab59747c59e4.tar.gz | |
Implement quick_exit() / at_quick_exit() from C++11 / C1x. Also add a
__noreturn macro and modify the other exiting functions to use it.
The __noreturn macro, unlike __dead2, must be used BEFORE the function.
This is in line with the C and C++ specifications that place _Noreturn (c1x)
and [[noreturn]] (C++11) in front of the functions. As with __dead2, this
macro falls back to using the GCC attribute.
Unfortunately, clang currently sets the same value for the C version macro
in C99 and C1x modes, so these functions are hidden by default. At some
point before 10.0, I need to go through the headers and clean up the C1x /
C++11 visibility.
Reviewed by: brooks (mentor)
Diffstat (limited to 'include')
| -rw-r--r-- | include/stdlib.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/include/stdlib.h b/include/stdlib.h index 3c26dfb..d7e49d0 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -76,7 +76,7 @@ extern int __mb_cur_max; extern int ___mb_cur_max(void); #define MB_CUR_MAX (___mb_cur_max()) -void abort(void) __dead2; +__noreturn void abort(void); int abs(int) __pure2; int atexit(void (*)(void)); double atof(const char *); @@ -86,7 +86,7 @@ void *bsearch(const void *, const void *, size_t, size_t, int (*)(const void *, const void *)); void *calloc(size_t, size_t) __malloc_like; div_t div(int, int) __pure2; -void exit(int) __dead2; +__noreturn void exit(int); void free(void *); char *getenv(const char *); long labs(long) __pure2; @@ -145,10 +145,18 @@ unsigned long long strtoull(const char * __restrict, char ** __restrict, int); #endif /* __LONG_LONG_SUPPORTED */ -void _Exit(int) __dead2; +__noreturn void _Exit(int); #endif /* __ISO_C_VISIBLE >= 1999 */ /* + * If we're in a mode greater than C99, expose C1x functions. + */ +#if __ISO_C_VISIBLE > 1999 +__noreturn void quick_exit(int) +int +at_quick_exit(void (*func)(void)); +#endif /* __ISO_C_VISIBLE > 1999 */ +/* * Extensions made by POSIX relative to C. We don't know yet which edition * of POSIX made these extensions, so assume they've always been there until * research can be done. |
