|  | // RUN: %clang_cc1 -fvisibility=hidden "-triple" "x86_64-apple-darwin8.0.0" -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-10_4 %s | 
|  | // RUN: %clang_cc1 -fvisibility=hidden "-triple" "x86_64-apple-darwin9.0.0" -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-10_5 %s | 
|  | // RUN: %clang_cc1 -fvisibility=hidden "-triple" "x86_64-apple-darwin10.0.0" -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-10_6 %s | 
|  |  | 
|  | // CHECK-10_4: @"OBJC_CLASS_$_WeakClass1" = extern_weak global | 
|  | // CHECK-10_5: @"OBJC_CLASS_$_WeakClass1" = external global | 
|  | // CHECK-10_6: @"OBJC_CLASS_$_WeakClass1" = external global | 
|  | __attribute__((availability(macosx,introduced=10.5))) | 
|  | @interface WeakClass1 @end | 
|  |  | 
|  | @implementation WeakClass1(MyCategory) @end | 
|  |  | 
|  | @implementation WeakClass1(YourCategory) @end | 
|  |  | 
|  | // CHECK-10_4: @"OBJC_CLASS_$_WeakClass2" = extern_weak global | 
|  | // CHECK-10_5: @"OBJC_CLASS_$_WeakClass2" = extern_weak global | 
|  | // CHECK-10_6: @"OBJC_CLASS_$_WeakClass2" = external global | 
|  | __attribute__((availability(macosx,introduced=10.6))) | 
|  | @interface WeakClass2 @end | 
|  |  | 
|  | @implementation WeakClass2(MyCategory) @end | 
|  |  | 
|  | @implementation WeakClass2(YourCategory) @end | 
|  |  | 
|  | // CHECK-10_4: @"OBJC_CLASS_$_WeakClass3" = extern_weak global | 
|  | // CHECK-10_5: @"OBJC_CLASS_$_WeakClass3" = extern_weak global | 
|  | // CHECK-10_6: @"OBJC_CLASS_$_WeakClass3" = external global | 
|  | __attribute__((availability(macosx,introduced=10.6))) | 
|  | @interface WeakClass3 @end | 
|  | @class WeakClass3; | 
|  |  | 
|  | @implementation WeakClass3(MyCategory) @end | 
|  |  | 
|  | @implementation WeakClass3(YourCategory) @end | 
|  |  |