semaphore.c:

  semaphore fix


mit-pthreads/pthreads/semaphore.c:
  semaphore fix

1 files changed, 3 insertions, 1 deletions

diff --git a/mit-pthreads/pthreads/semaphore.c b/mit-pthreads/pthreads/semaphore.c
index 5516af1f4e3..0af54beca8a 100644
--- a/mit-pthreads/pthreads/semaphore.c
+++ b/mit-pthreads/pthreads/semaphore.c
@@ -32,7 +32,9 @@ int sem_destroy(sem_t * sem)
 
 int sem_wait(sem_t * sem)
 {
-  while ((errno=pthread_mutex_lock(&sem->mutex)) || !sem->count)
+  if ((errno=pthread_mutex_lock(&sem->mutex)))
+    return -1;
+  while (!sem->count)
     pthread_cond_wait(&sem->cond, &sem->mutex);
   if (errno)
     return -1;