| // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fblocks -fsyntax-only -fobjc-arc -x objective-c -fobjc-runtime-has-weak %s.result | 
 | // RUN: arcmt-test --args -triple x86_64-apple-macosx10.7 -fblocks -fsyntax-only %s > %t | 
 | // RUN: diff %t %s.result | 
 |  | 
 | #include "Common.h" | 
 |  | 
 | @interface Foo : NSObject | 
 | -(Foo *)something; | 
 | @end | 
 |  | 
 | void bar(void (^block)()); | 
 |  | 
 | void test1(Foo *p) { | 
 |   __weak Foo *x = p; // __block used just to break cycle. | 
 |   bar(^{ | 
 |     [x something]; | 
 |   }); | 
 | } | 
 |  | 
 | void test2(Foo *p) { | 
 |   __block Foo *x; // __block used as output variable. | 
 |   bar(^{ | 
 |     x = [p something]; | 
 |   }); | 
 | } | 
 |  | 
 | void test3(Foo *p) { | 
 |   __block Foo *x; // __block used as output variable. | 
 |   bar(^{ | 
 |     [x something]; | 
 |   }); | 
 |   bar(^{ | 
 |     x = 0; | 
 |   }); | 
 | } | 
 |  | 
 | void test4(Foo *p) { | 
 |   __weak Foo *x = p; // __block used just to break cycle. | 
 |   bar(^{ | 
 |     [x something]; | 
 |   }); | 
 |   bar(^{ | 
 |     [x something]; | 
 |   }); | 
 | } |