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// RUN: %clang_cc1 -rewrite-objc %s -o -
typedef struct MyWidget {
int a;
} MyWidget;
MyWidget gWidget = { 17 };
@protocol MyProto
- (MyWidget *)widget;
@end
@interface Foo
@end
@interface Bar: Foo <MyProto>
@end
@interface Container
+ (MyWidget *)elementForView:(Foo *)view;
@end
@implementation Foo
@end
@implementation Bar
- (MyWidget *)widget {
return &gWidget;
}
@end
@implementation Container
+ (MyWidget *)elementForView:(Foo *)view
{
MyWidget *widget = (void*)0;
if (@protocol(MyProto)) {
widget = [(id <MyProto>)view widget];
}
return widget;
}
@end
int main(void) {
id view;
MyWidget *w = [Container elementForView: view];
return 0;
}
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