1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck -check-prefix LP64 %s 2 // RUN: %clang_cc1 -triple i386-apple-darwin9 -emit-llvm -o - %s | FileCheck -check-prefix LP32 %s 3 4 typedef struct objc_class *Class; 5 6 typedef 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 31 static Class MyClass; 32 33 Class 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 47 id 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** % 68 // CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8** 69 // CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}} 70 71 // CHECK-LP32: %{{.*}} = load i8** % 72 // CHECK-NEXT: %{{.*}} = bitcast i8* %{{.*}} to i8** 73 // CHECK-NEXT: store i8* %{{.*}}, i8** %{{.*}} 74
