fix errno for posix_openpt with no free ptys available

[musl] / src / thread / pthread_kill.c

diff --git a/src/thread/pthread_kill.c b/src/thread/pthread_kill.c
index a24ecc2..3d9395c 100644 (file)
--- a/src/thread/pthread_kill.c
+++ b/src/thread/pthread_kill.c
@@ -1,10 +1,12 @@
 #include "pthread_impl.h"
+#include "lock.h"
 
 int pthread_kill(pthread_t t, int sig)
 {
        int r;
-       __lock(&t->killlock);
-       r = t->dead ? ESRCH : -__syscall(SYS_tgkill, t->pid, t->tid, sig);
-       a_store(&t->killlock, 0);
+       LOCK(t->killlock);
+       r = t->tid ? -__syscall(SYS_tkill, t->tid, sig)
+               : (sig+0U >= _NSIG ? EINVAL : 0);
+       UNLOCK(t->killlock);
        return r;
 }