| // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck %s | 
 |  | 
 | __attribute((objc_root_class)) @interface A @end | 
 | @interface B : A @end | 
 |  | 
 | // rdar://problem/23559789 | 
 | //   Ensure that type differences don't cause an assert here. | 
 | void test0(__weak B **src) { | 
 |   __weak A *dest = *src; | 
 | } | 
 | // CHECK-LABEL: define{{.*}} void @test0 | 
 | // CHECK:       [[SRC:%.*]] = alloca ptr, align 8 | 
 | // CHECK:       [[DEST:%.*]] = alloca ptr, align 8 | 
 | // CHECK:       [[T0:%.*]] = load ptr, ptr [[SRC]], align 8 | 
 | // CHECK-NEXT:  call void @llvm.objc.copyWeak(ptr [[DEST]], ptr [[T0]]) | 
 | // CHECK:       call void @llvm.objc.destroyWeak(ptr [[DEST]]) |