1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/gthr-dce.h b/gcc/gthr-dce.h
index 199dfe66b40..c2c24cdfe31 100644
--- a/gcc/gthr-dce.h
+++ b/gcc/gthr-dce.h
@@ -274,10 +274,18 @@ __gthread_objc_thread_get_data(void)
 static inline int
 __gthread_objc_mutex_allocate(objc_mutex_t mutex)
 {
-  if (__gthread_active_p ()
-      && pthread_mutex_init((pthread_mutex_t *)mutex->backend,
+  if (__gthread_active_p ())
+    {
+      mutex->backend = objc_malloc(sizeof(pthread_mutex_t));
+
+      if (pthread_mutex_init((pthread_mutex_t *)mutex->backend,
       			    pthread_mutexattr_default))
-    return -1;
+        {
+          objc_free(mutex->backend);
+          mutex->backend = NULL;
+          return -1;
+        }
+    }
 
   return 0;
 }