path: root/src/thread/pthread_create.c
diff options
authorRich Felker <>2012-09-06 23:34:10 -0400
committerRich Felker <>2012-09-06 23:34:10 -0400
commit0c05bd3a9c165cf2f0b9d6fa23a1f96532ddcdb3 (patch)
tree124c1d65e338abece7cf55c95cbc8195be94fe2f /src/thread/pthread_create.c
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/thread/pthread_create.c')
1 files changed, 2 insertions, 2 deletions
diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index 4567b41c..d8b8f0fc 100644
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -8,7 +8,7 @@ weak_alias(dummy_0, __synccall_lock);
weak_alias(dummy_0, __synccall_unlock);
weak_alias(dummy_0, __pthread_tsd_run_dtors);
-void pthread_exit(void *result)
+_Noreturn void pthread_exit(void *result)
pthread_t self = pthread_self();
int n;
@@ -43,7 +43,7 @@ void pthread_exit(void *result)
__unmapself(self->map_base, self->map_size);
- __syscall(SYS_exit, 0);
+ for (;;) __syscall(SYS_exit, 0);
void __do_cleanup_push(struct __ptcb *cb)