fluencelabs/musl
1
0
Fork 0
mirror of https://github.com/fluencelabs/musl synced 2025-06-28 06:02:04 +00:00
Code Issues Projects Releases Wiki Activity

further use of _Noreturn, for non-plain-C functions

Browse Source 
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.
This commit is contained in:
Rich Felker
2012-09-06 23:34:10 -04:00
parent 453059571c
commit 0c05bd3a9c
11 changed files with 47 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/setjmp.h
View File

@ -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