arc-unavailable-for-weakref.mm revision dd5b7b630f814446e06ce397dd4d036399c3ce9e 
1// RUN: %clang_cc1 -x objective-c++ -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify %s
2// rdar://9693477
3
4__attribute__((objc_arc_weak_reference_unavailable))
5@interface NSOptOut1072  // expected-note {{class is declared here}}
6@end
7
8@interface sub : NSOptOut1072 @end // expected-note 2 {{class is declared here}}
9
10int main() {
11  __weak sub *w2; // expected-error {{class is incompatible with __weak references}}
12
13  __weak NSOptOut1072 *ns1; // expected-error {{class is incompatible with __weak references}}
14
15  id obj;
16
17  ns1 = (__weak sub *)obj; // expected-error {{assignment of a weak-unavailable object to a __weak object}} \
18                           // expected-error {{class is incompatible with __weak references}} \
19                           // expected-error {{explicit ownership qualifier on cast result has no effect}}
20}
21
22// rdar://9732636
23__attribute__((objc_arc_weak_reference_unavailable))
24@interface NOWEAK
25+ (id) new;
26@end
27
28NOWEAK * Test1() {
29  NOWEAK * strong1 = [NOWEAK new];
30  __weak id weak1;
31  weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
32
33  __weak id weak2 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
34  return (__weak id)strong1; // expected-error {{cast of weak-unavailable object of type 'NOWEAK *' to a __weak object of type '__weak id'}} \
35                             // expected-error {{explicit ownership qualifier on cast result has no effect}}
36}
37
38@protocol P @end
39@protocol P1 @end
40
41NOWEAK<P, P1> * Test2() {
42  NOWEAK<P, P1> * strong1 = 0;
43  __weak id<P> weak1;
44  weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
45
46  __weak id<P> weak2 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
47  return (__weak id<P, P1>)strong1; // expected-error {{cast of weak-unavailable object of type 'NOWEAK<P,P1> *' to a __weak object of type '__weak id<P,P1>'}} \
48                                    // expected-error {{explicit ownership qualifier on cast result has no effect}}
49}
50
51