blob: 5eaf38996de2afdf23ba6d08b34893182d18daad (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/* { dg-do run } */
/* { dg-xfail-run-if "Needs OBJC2 ABI" { *-*-darwin* && { lp64 && { ! objc2 } } } { "-fnext-runtime" } { "" } } */
#include "../objc-obj-c++-shared/Object1.h"
#include <stdlib.h>
class MyWidget {
public:
int a;
MyWidget(void) { a = 17; }
};
MyWidget gWidget;
@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 = 0;
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;
}
#include "../objc-obj-c++-shared/Object1-implementation.h"
|
