Subversion Repositories scarts

/* { dg-do run { target *-*-darwin* } } */

#include <objc/Object.h>

#include <stdlib.h>

typedef struct MyWidget {

  int a;

} MyWidget;

MyWidget gWidget = { 17 };

@protocol MyProto

- (MyWidget *)widget;

@end

@interface Foo: Object

@end

@interface Bar: Foo <MyProto>

@end

@interface Container: Object

+ (MyWidget *)elementForView:(Foo *)view;

@end

@implementation Foo

@end

@implementation Bar

- (MyWidget *)widget {

  return &gWidget;

}

@end

@implementation Container

+ (MyWidget *)elementForView:(Foo *)view

{

  MyWidget *widget = nil;

  if ([view conformsTo:@protocol(MyProto)]) {

    widget = [(Foo <MyProto> *)view widget];

  }

  return widget;

}

@end

int main(void) {

  id view = [Bar new];

  MyWidget *w = [Container elementForView: view];

  if (!w || w->a != 17)

    abort ();

  return 0;

}