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
59
60
61
62
63
64
65
66
67
68
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP64 %s
// RUN: %clang_cc1 -triple i386-apple-darwin9 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP32 %s
typedef struct objc_class *Class;
typedef struct objc_object {
Class isa;
} *id;
@interface I
+ (Class) class;
- (void)meth : (id)object : (id)src_object;
+ (unsigned char) isSubclassOfClass:(Class)aClass ;
@end
@implementation I
+ (Class) class {return 0;}
+ (unsigned char) isSubclassOfClass:(Class)aClass {return 0;}
- (void)meth : (id)object : (id)src_object {
[object->isa isSubclassOfClass:[I class]];
[(*object).isa isSubclassOfClass:[I class]];
object->isa = src_object->isa;
(*src_object).isa = (*object).isa;
}
@end
static Class MyClass;
Class Test(const void *inObject1) {
if(((id)inObject1)->isa == MyClass)
return ((id)inObject1)->isa;
return (id)0;
}
@interface Foo {
@public
id isa;
}
+(id)method;
@end
id Test2(void) {
if([Foo method]->isa)
return (*[Foo method]).isa;
return [Foo method]->isa;
}
@interface Cat {}
@end
@interface SuperCat : Cat {}
+(void)geneticallyAlterCat:(Cat *)cat;
@end
@implementation SuperCat
+ (void)geneticallyAlterCat:(Cat *)cat {
Class dynamicSubclass;
((id)cat)->isa = dynamicSubclass;
}
@end
// CHECK-LP64: %{{.*}} = load ptr, ptr %
// CHECK-NEXT: store ptr %{{.*}}, ptr %{{.*}}
// CHECK-LP32: %{{.*}} = load ptr, ptr %
// CHECK-NEXT: store ptr %{{.*}}, ptr %{{.*}}
|
