(pthread_join): Limited checking for invalid descriptors.

diff --git a/nptl/pthread_join.c b/nptl/pthread_join.c
index 387f230576ea2215385ecfe23b3660a3d551c553..84f993c70012d0f60b2b93969fd79d9c3ef9cfce 100644 (file)
--- a/nptl/pthread_join.c
+++ b/nptl/pthread_join.c
@@ -40,7 +40,7 @@ pthread_join (threadid, thread_return)
   struct pthread *pd = (struct pthread *) threadid;
 
   /* Make sure the descriptor is valid.  */
-  if (DEBUGGING_P && __find_in_stack_list (pd) == NULL)
+  if ((DEBUGGING_P && __find_in_stack_list (pd) == NULL) || pd->tid <= 0)
     /* Not a valid thread handle.  */
     return ESRCH;