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. --- src/exit/_Exit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/exit/_Exit.c') diff --git a/src/exit/_Exit.c b/src/exit/_Exit.c index c00a2ffb..7a6115c7 100644 --- a/src/exit/_Exit.c +++ b/src/exit/_Exit.c @@ -4,5 +4,5 @@ _Noreturn void _Exit(int ec) { __syscall(SYS_exit_group, ec); - __syscall(SYS_exit, ec); + for (;;) __syscall(SYS_exit, ec); } -- cgit v1.2.1