1 files changed, 31 insertions, 0 deletions
diff --git a/test/SemaObjC/warn-retain-cycle.m b/test/SemaObjC/warn-retain-cycle.m
index 1a13fe3726..fb8f2b77f0 100644
--- a/test/SemaObjC/warn-retain-cycle.m
+++ b/test/SemaObjC/warn-retain-cycle.m
@@ -1,5 +1,7 @@
 // RUN: %clang_cc1 -fsyntax-only -fobjc-runtime-has-weak -fobjc-arc -fblocks -verify -Wno-objc-root-class %s
 
+void *_Block_copy(const void *block);
+
 @interface Test0
 - (void) setBlock: (void(^)(void)) block;
 - (void) addBlock: (void(^)(void)) block;
@@ -153,3 +155,32 @@ void testBlockVariable() {
   };
 }
 
+
+@interface NSObject
+- (id)copy;
+
+- (void (^)(void))someRandomMethodReturningABlock;
+@end
+
+
+void testCopying(Test0 *obj) {
+  typedef void (^block_t)(void);
+
+  [obj setBlock:[^{ // expected-note{{block will be retained by the captured object}}
+    [obj actNow]; // expected-warning{{capturing 'obj' strongly in this block is likely to lead to a retain cycle}}
+  } copy]];
+
+  [obj addBlock:(__bridge_transfer block_t)_Block_copy((__bridge void *)^{ // expected-note{{block will be retained by the captured object}}
+    [obj actNow]; // expected-warning{{capturing 'obj' strongly in this block is likely to lead to a retain cycle}}
+  })];
+  
+  [obj addBlock:[^{
+    [obj actNow]; // no-warning
+  } someRandomMethodReturningABlock]];
+  
+  extern block_t someRandomFunctionReturningABlock(block_t);
+  [obj setBlock:someRandomFunctionReturningABlock(^{
+    [obj actNow]; // no-warning
+  })];
+}
+