1 files changed, 12 insertions, 0 deletions
diff --git a/test/SemaObjCXX/arc-0x.mm b/test/SemaObjCXX/arc-0x.mm
index e24b9602fb7f..43f6671ac241 100644
--- a/test/SemaObjCXX/arc-0x.mm
+++ b/test/SemaObjCXX/arc-0x.mm
@@ -80,4 +80,16 @@ void testAutoIdTemplate(id obj) {
   autoTemplateFunction<id, 2>(obj, obj, [Array new]); // no-warning
 }
 
+// rdar://12229679
+@interface NSObject @end
+typedef __builtin_va_list va_list;
+@interface MyClass : NSObject
+@end
+
+@implementation MyClass
++ (void)fooMethod:(id)firstArg, ... {
+    va_list args;
 
+    __builtin_va_arg(args, id);
+}
+@end