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1// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-X86-64 %s2 3__attribute__((weak_import)) @interface WeakRootClass @end4 5__attribute__((weak_import)) @interface WeakClass : WeakRootClass6@end7 8@interface MySubclass : WeakClass @end9 10@implementation MySubclass @end11 12@implementation WeakClass(MyCategory) @end13 14 15__attribute__((weak_import))16@interface WeakClass1 @end17 18@implementation WeakClass1(MyCategory) @end19 20@implementation WeakClass1(YourCategory) @end21 22 __attribute__((weak_import))23@interface WeakClass3 24+ message;25@end26 27int main(void) {28 [WeakClass3 message];29}30 31// CHECK-X86-64: OBJC_METACLASS_$_WeakRootClass" = extern_weak global32// CHECK-X86-64: OBJC_METACLASS_$_WeakClass" = extern_weak global33// CHECK-X86-64: OBJC_CLASS_$_WeakClass" = extern_weak global34// CHECK-X86-64: OBJC_CLASS_$_WeakClass1" = extern_weak global35// CHECK-X86-64: OBJC_CLASS_$_WeakClass3" = extern_weak global36 37// Root is being implemented here. No extern_weak.38__attribute__((weak_import)) @interface Root @end39 40@interface Super : Root @end41 42@interface Sub : Super @end43 44@implementation Sub @end45 46@implementation Root @end47 48// CHECK-X86-64-NOT: OBJC_METACLASS_$_Root" = extern_weak global49