fix stale locks left behind when pthread_create fails

[musl] / src / thread / pthread_sigmask.c

diff --git a/src/thread/pthread_sigmask.c b/src/thread/pthread_sigmask.c
index decc38f..f6102ad 100644 (file)
--- a/src/thread/pthread_sigmask.c
+++ b/src/thread/pthread_sigmask.c
@@ -3,11 +3,11 @@
 #include <pthread.h>
 #include "syscall.h"
 
-int pthread_sigmask(int how, const sigset_t *set, sigset_t *old)
+int pthread_sigmask(int how, const sigset_t *restrict set, sigset_t *restrict old)
 {
        int ret;
-       if (how > 2U) return EINVAL;
-       ret = -__syscall(SYS_rt_sigprocmask, how, set, old, 8);
+       if ((unsigned)how - SIG_BLOCK > 2U) return EINVAL;
+       ret = -__syscall(SYS_rt_sigprocmask, how, set, old, __SYSCALL_SSLEN);
        if (!ret && old) {
                if (sizeof old->__bits[0] == 8) {
                        old->__bits[0] &= ~0x380000000ULL;