musl/src/unistd/_exit.c

#include <unistd.h>
#include <stdlib.h>

_Noreturn void _exit(int status)
{
	_Exit(status);
}
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`#include <unistd.h>`
			`#include <stdlib.h>`

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. 2012-09-06 23:34:10 -04:00			`_Noreturn void _exit(int status)`
initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00			`{`
			`_Exit(status);`
			`}`