always block signals in pthread_exit before decrementing thread count

[musl] / src / thread / pthread_create.c

diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
index e6760ab..0cd2d6c 100644 (file)
--- a/src/thread/pthread_create.c
+++ b/src/thread/pthread_create.c
@@ -32,6 +32,8 @@ _Noreturn void pthread_exit(void *result)
        self->dead = 1;
        __unlock(self->killlock);
 
+       __syscall(SYS_rt_sigprocmask, SIG_BLOCK, SIGALL_SET, 0, _NSIG/8);
+
        do n = libc.threads_minus_1;
        while (n && a_cas(&libc.threads_minus_1, n, n-1)!=n);
        if (!n) exit(0);
@@ -39,8 +41,6 @@ _Noreturn void pthread_exit(void *result)
        if (self->detached && self->map_base) {
                if (self->detached == 2)
                        __syscall(SYS_set_tid_address, 0);
-               __syscall(SYS_rt_sigprocmask, SIG_BLOCK,
-                       SIGALL_SET, 0, _NSIG/8);
                __unmapself(self->map_base, self->map_size);
        }