diff options
Diffstat (limited to 'clang/test/SemaObjC/weak-receiver-warn.m')
| -rw-r--r-- | clang/test/SemaObjC/weak-receiver-warn.m | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/clang/test/SemaObjC/weak-receiver-warn.m b/clang/test/SemaObjC/weak-receiver-warn.m new file mode 100644 index 0000000..f3955da --- /dev/null +++ b/clang/test/SemaObjC/weak-receiver-warn.m @@ -0,0 +1,19 @@ +// RUN: %clang_cc1 -fsyntax-only -fobjc-runtime-has-weak -fobjc-arc -fblocks -Wreceiver-is-weak -verify %s +// rdar://10225276 + +@interface Test0 +- (void) setBlock: (void(^)(void)) block; +- (void) addBlock: (void(^)(void)) block; +- (void) actNow; +@end + +void test0(Test0 *x) { + __weak Test0 *weakx = x; + [x addBlock: ^{ [weakx actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} + [x setBlock: ^{ [weakx actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} + x.block = ^{ [weakx actNow]; }; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} + + [weakx addBlock: ^{ [x actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} + [weakx setBlock: ^{ [x actNow]; }]; // expected-warning {{weak receiver may be unpredictably null in ARC mode}} + weakx.block = ^{ [x actNow]; }; +} |