Don't crash when trying to synchronize on nil (but don't do anything sensible either).

13 years ago · d838f7ad28
parent 8979f19f1d
commit d838f7ad28
1 changed files with 2 additions and 2 deletions
--- a/associate.m
+++ b/associate.m
@ -361,7 +361,7 @@ PRIVATE void gc_setTypeForClass(Class cls, void *type)

 int objc_sync_enter(id object)
 {
-	if (isSmallObject(object)) { return 0; }
+	if ((object == 0) || isSmallObject(object)) { return 0; }
 	struct reference_list *list = referenceListForObject(object, YES);
 	LOCK(&list->lock);
 	return 0;
@ -369,7 +369,7 @@ int objc_sync_enter(id object)

 int objc_sync_exit(id object)
 {
-	if (isSmallObject(object)) { return 0; }
+	if ((object == 0) || isSmallObject(object)) { return 0; }
 	struct reference_list *list = referenceListForObject(object, NO);
 	if (NULL != list)
 	{