1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5  -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP64 %s
2// RUN: %clang_cc1 -triple i386-apple-darwin9 -fobjc-runtime=macosx-fragile-10.5  -emit-llvm -o - %s | FileCheck -check-prefix CHECK-LP32 %s
3
4typedef struct objc_class *Class;
5
6typedef struct objc_object {
7    Class isa;
8} *id;
9
10@interface I
11+ (Class) class;
12- (void)meth : (id)object : (id)src_object;
13+ (unsigned char) isSubclassOfClass:(Class)aClass ;
14@end
15
16@implementation I
17+ (Class) class {return 0;}
18+ (unsigned char) isSubclassOfClass:(Class)aClass {return 0;}
19- (void)meth : (id)object  : (id)src_object {
20    [object->isa isSubclassOfClass:[I class]];
21
22    [(*object).isa isSubclassOfClass:[I class]];
23
24    object->isa = src_object->isa;
25    (*src_object).isa = (*object).isa;
26}
27@end
28
29
30// rdar 7470820
31static Class MyClass;
32
33Class Test(const void *inObject1) {
34  if(((id)inObject1)->isa == MyClass)
35   return ((id)inObject1)->isa;
36  return (id)0;
37}
38
39// rdar 7609722
40@interface Foo {
41@public
42  id isa;
43}
44+(id)method;
45@end
46
47id Test2() {
48    if([Foo method]->isa)
49      return (*[Foo method]).isa;
50    return [Foo method]->isa;
51}
52
53// rdar 7709015
54@interface Cat   {}
55@end
56
57@interface SuperCat : Cat {}
58+(void)geneticallyAlterCat:(Cat *)cat;
59@end
60
61@implementation SuperCat
62+ (void)geneticallyAlterCat:(Cat *)cat {
63    Class dynamicSubclass;
64    ((id)cat)->isa = dynamicSubclass;
65}
66@end
67// CHECK-LP64: %{{.*}} = load i8*, i8** %
68// CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8**
69// CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}}
70
71// CHECK-LP32: %{{.*}} = load i8*, i8** %
72// CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8**
73// CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}}
74