* tst-mutex5.c (do_test): Unlock before destroy, otherwise we invoke

	undefined behavior.

2 files changed, 9 insertions, 0 deletions

diff --git a/nptl/ChangeLog b/nptl/ChangeLog
index fa76272795..cf973dde42 100644
--- a/nptl/ChangeLog
+++ b/nptl/ChangeLog
@@ -1,5 +1,8 @@
 2003-03-23  Roland McGrath  <roland@redhat.com>
 
+	* tst-mutex5.c (do_test): Unlock before destroy, otherwise we invoke
+	undefined behavior.
+
 	* tst-join5.c (tf1, tf2): Add a cast.
 
 	* Makeconfig (includes): Append -I$(..)nptl to this variable.
diff --git a/nptl/tst-mutex5.c b/nptl/tst-mutex5.c
index 7c414bc339..a615012507 100644
--- a/nptl/tst-mutex5.c
+++ b/nptl/tst-mutex5.c
@@ -142,6 +142,12 @@ do_test (void)
       return 1;
     }
 
+  if (pthread_mutex_unlock (&m) != 0)
+    {
+      puts ("final mutex_unlock failed");
+      return 1;
+    }
+
   if (pthread_mutex_destroy (&m) != 0)
     {
       puts ("mutex_destroy failed");