1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-X86-64 %s
2
3__attribute__((weak_import)) @interface WeakRootClass @end
4
5__attribute__((weak_import)) @interface WeakClass : WeakRootClass
6@end
7
8@interface MySubclass : WeakClass @end
9
10@implementation MySubclass @end
11
12@implementation WeakClass(MyCategory) @end
13
14
15__attribute__((weak_import))
16@interface WeakClass1 @end
17
18@implementation WeakClass1(MyCategory) @end
19
20@implementation WeakClass1(YourCategory) @end
21
22 __attribute__((weak_import))
23@interface WeakClass3
24+ message;
25@end
26
27int main() {
28     [WeakClass3 message];
29}
30
31// CHECK-X86-64: OBJC_METACLASS_$_WeakRootClass" = extern_weak global
32// CHECK-X86-64: OBJC_METACLASS_$_WeakClass" = extern_weak global
33// CHECK-X86-64: OBJC_CLASS_$_WeakClass" = extern_weak global
34// CHECK-X86-64: OBJC_CLASS_$_WeakClass1" = extern_weak global
35// CHECK-X86-64: OBJC_CLASS_$_WeakClass3" = extern_weak global
36
37// Root is being implemented here. No extern_weak.
38__attribute__((weak_import)) @interface Root @end
39
40@interface Super : Root @end
41
42@interface Sub : Super @end
43
44@implementation Sub @end
45
46@implementation Root @end
47
48// CHECK-X86-64-NOT: OBJC_METACLASS_$_Root" = extern_weak global
49