From 0c05bd3a9c165cf2f0b9d6fa23a1f96532ddcdb3 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 6 Sep 2012 23:34:10 -0400 Subject: further use of _Noreturn, for non-plain-C functions 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. --- include/setjmp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/setjmp.h') diff --git a/include/setjmp.h b/include/setjmp.h index 8ec5c6f1..e5877b44 100644 --- a/include/setjmp.h +++ b/include/setjmp.h @@ -24,14 +24,14 @@ typedef struct { unsigned long __ss[128/sizeof(long)]; } sigjmp_buf[1]; int sigsetjmp (sigjmp_buf, int); -void siglongjmp (sigjmp_buf, int); +_Noreturn void siglongjmp (sigjmp_buf, int); #endif #if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \ || defined(_BSD_SOURCE) int _setjmp (jmp_buf); -void _longjmp (jmp_buf, int); +_Noreturn void _longjmp (jmp_buf, int); #endif -- cgit v1.2.1