| Fariborz Jahanian | 878f850 | 2012-04-04 20:05:25 +0000 | [diff] [blame^] | 1 | // RUN: %clang_cc1 -fsyntax-only -fobjc-runtime-has-weak -fobjc-arc -fblocks -Wreceiver-is-weak -verify %s |
| 2 | // rdar://10225276 |
| 3 | |
| 4 | @interface Test0 |
| 5 | - (void) setBlock: (void(^)(void)) block; |
| 6 | - (void) addBlock: (void(^)(void)) block; |
| 7 | - (void) actNow; |
| 8 | @end |
| 9 | |
| 10 | void test0(Test0 *x) { |
| 11 | __weak Test0 *weakx = x; |
| 12 | [x addBlock: ^{ [weakx actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} |
| 13 | [x setBlock: ^{ [weakx actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} |
| 14 | x.block = ^{ [weakx actNow]; }; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} |
| 15 | |
| 16 | [weakx addBlock: ^{ [x actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} |
| 17 | [weakx setBlock: ^{ [x actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} |
| 18 | weakx.block = ^{ [x actNow]; }; |
| 19 | } |