reject invalid arguments to pthread_barrierattr_setpshared

this is a POSIX requirement.

diff --git a/src/thread/pthread_barrierattr_setpshared.c b/src/thread/pthread_barrierattr_setpshared.c
index b391461e16d19adb68ba310fee7d091f1f98c765..c2d2929dcf8e975fd8d743800eb78dfc2be4c9db 100644 (file)
--- a/src/thread/pthread_barrierattr_setpshared.c
+++ b/src/thread/pthread_barrierattr_setpshared.c
@@ -2,6 +2,7 @@
 
 int pthread_barrierattr_setpshared(pthread_barrierattr_t *a, int pshared)
 {
+       if (pshared > 1U) return EINVAL;
        a->__attr = pshared ? INT_MIN : 0;
        return 0;
 }