1 // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -Wno-objc-root-class %s
2 // RUN: %clang_cc1 -triple x86_64-apple-darwin11 -fobjc-runtime-has-weak -fsyntax-only -fobjc-weak -verify -Wno-objc-root-class %s
4 __attribute__((objc_arc_weak_reference_unavailable))
5 @interface NSOptOut1072 // expected-note {{class is declared here}}
8 @interface sub : NSOptOut1072 @end // expected-note 2 {{class is declared here}}
11 __weak sub *w2; // expected-error {{class is incompatible with __weak references}}
13 __weak NSOptOut1072 *ns1; // expected-error {{class is incompatible with __weak references}}
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}}
22 __attribute__((objc_arc_weak_reference_unavailable))
27 NOWEAK * Test1(void) {
28 NOWEAK * strong1 = [NOWEAK new];
30 weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
32 __weak id weak2 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
33 return (__weak id)strong1; // expected-error {{cast of weak-unavailable object of type 'NOWEAK *' to a __weak object of type '__weak id'}} \
34 // expected-error {{explicit ownership qualifier on cast result has no effect}}
40 NOWEAK<P, P1> * Test2(void) {
41 NOWEAK<P, P1> * strong1 = 0;
43 weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
45 __weak id<P> weak2 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}}
46 return (__weak id<P>)strong1; // expected-error {{cast of weak-unavailable object of type 'NOWEAK<P,P1> *' to a __weak object of type '__weak id<P>'}} \
47 // expected-error {{explicit ownership qualifier on cast result has no effect}}
50 __attribute__((objc_arc_weak_reference_unavailable))
57 @property (weak) NSFont *font; // expected-error {{synthesizing __weak instance variable of type 'NSFont *', which does not support weak references}}
60 @implementation I // expected-note {{when implemented by class I}}
61 @synthesize font = _font;
65 @property (weak) NSFont *font; // expected-error {{synthesizing __weak instance variable of type 'NSFont *', which does not support weak references}}
68 @interface I1 <MyProtocol>
71 @implementation I1 // expected-note {{when implemented by class I1}}
72 @synthesize font = _font;
76 @property (weak) NSFont *font; // expected-error {{synthesizing __weak instance variable of type 'NSFont *', which does not support weak references}}
83 @implementation I2 // expected-note {{when implemented by class I2}}
84 @synthesize font = _font;
87 __attribute__((objc_arc_weak_reference_unavailable(1))) // expected-error {{'objc_arc_weak_reference_unavailable' attribute takes no arguments}}
91 int I4 __attribute__((objc_arc_weak_reference_unavailable)); // expected-error {{'objc_arc_weak_reference_unavailable' attribute only applies to Objective-C interfaces}}