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 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(void) { 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__attribute__((objc_arc_weak_reference_unavailable)) 23@interface NOWEAK 24+ (id) new; 25@end 26 27NOWEAK * Test1(void) { 28 NOWEAK * strong1 = [NOWEAK new]; 29 __weak id weak1; 30 weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}} 31 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}} 35} 36 37@protocol P @end 38@protocol P1 @end 39 40NOWEAK<P, P1> * Test2(void) { 41 NOWEAK<P, P1> * strong1 = 0; 42 __weak id<P> weak1; 43 weak1 = strong1; // expected-error {{assignment of a weak-unavailable object to a __weak object}} 44 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}} 48} 49 50__attribute__((objc_arc_weak_reference_unavailable)) 51@interface NSFont 52@end 53 54@interface I 55{ 56} 57@property (weak) NSFont *font; // expected-error {{synthesizing __weak instance variable of type 'NSFont *', which does not support weak references}} 58@end 59 60@implementation I // expected-note {{when implemented by class I}} 61@synthesize font = _font; 62@end 63 64@protocol MyProtocol 65@property (weak) NSFont *font; // expected-error {{synthesizing __weak instance variable of type 'NSFont *', which does not support weak references}} 66@end 67 68@interface I1 <MyProtocol> 69@end 70 71@implementation I1 // expected-note {{when implemented by class I1}} 72@synthesize font = _font; 73@end 74 75@interface Super 76@property (weak) NSFont *font; // expected-error {{synthesizing __weak instance variable of type 'NSFont *', which does not support weak references}} 77@end 78 79 80@interface I2 : Super 81@end 82 83@implementation I2 // expected-note {{when implemented by class I2}} 84@synthesize font = _font; 85@end 86 87__attribute__((objc_arc_weak_reference_unavailable(1))) // expected-error {{'objc_arc_weak_reference_unavailable' attribute takes no arguments}} 88@interface I3 89@end 90 91int I4 __attribute__((objc_arc_weak_reference_unavailable)); // expected-error {{'objc_arc_weak_reference_unavailable' attribute only applies to Objective-C interfaces}} 92