path: root/src/exit
diff options
authorRich Felker <>2012-09-06 23:34:10 -0400
committerRich Felker <>2012-09-06 23:34:10 -0400
commit0c05bd3a9c165cf2f0b9d6fa23a1f96532ddcdb3 (patch)
tree124c1d65e338abece7cf55c95cbc8195be94fe2f /src/exit
parent453059571c9dc84dd168631eced25ec2d7afd98e (diff)
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.
Diffstat (limited to 'src/exit')
2 files changed, 2 insertions, 2 deletions
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);
diff --git a/src/exit/assert.c b/src/exit/assert.c
index e87442a7..49b0dc3e 100644
--- a/src/exit/assert.c
+++ b/src/exit/assert.c
@@ -1,7 +1,7 @@
#include <stdio.h>
#include <stdlib.h>
-void __assert_fail(const char *expr, const char *file, int line, const char *func)
+_Noreturn void __assert_fail(const char *expr, const char *file, int line, const char *func)
fprintf(stderr, "Assertion failed: %s (%s: %s: %d)\n", expr, file, func, line);