barrier destroy must also wait for threads in other processes exiting barrier

[musl] / src / thread / pthread_barrier_destroy.c

diff --git a/src/thread/pthread_barrier_destroy.c b/src/thread/pthread_barrier_destroy.c
index f82664d..3ebc2b3 100644 (file)
--- a/src/thread/pthread_barrier_destroy.c
+++ b/src/thread/pthread_barrier_destroy.c
@@ -5,6 +5,8 @@ void __vm_lock(int), __vm_unlock(void);
 int pthread_barrier_destroy(pthread_barrier_t *b)
 {
        if (b->_b_limit < 0) {
+               int seq = b->_b_seq;
+               if (seq & 1) __wait(&b->_b_seq, 0, seq, 0);
                __vm_lock(-1);
                __vm_unlock();
        }