| 1 | // RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10 -analyzer-checker=core,alpha.core.StackAddressAsyncEscape -fblocks -verify %s |
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| 2 | |
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| 3 | typedef struct dispatch_queue_s *dispatch_queue_t; |
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| 4 | typedef void (^dispatch_block_t)(void); |
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| 5 | void dispatch_async(dispatch_queue_t queue, dispatch_block_t block); |
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| 6 | extern dispatch_queue_t queue; |
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| 7 | |
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| 8 | void test_block_inside_block_async_no_leak() { |
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| 9 | int x = 123; |
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| 10 | int *p = &x; |
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| 11 | void (^inner)(void) = ^void(void) { |
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| 12 | int y = x; |
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| 13 | ++y; |
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| 14 | }; |
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| 15 | // Block_copy(...) copies the captured block ("inner") too, |
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| 16 | // there is no leak in this case. |
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| 17 | dispatch_async(queue, ^void(void) { |
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| 18 | int z = x; |
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| 19 | ++z; |
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| 20 | inner(); |
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| 21 | }); // no-warning |
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| 22 | } |
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| 23 | |
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| 24 | dispatch_block_t test_block_inside_block_async_leak() { |
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| 25 | int x = 123; |
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| 26 | void (^inner)(void) = ^void(void) { |
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| 27 | int y = x; |
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| 28 | ++y; |
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| 29 | }; |
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| 30 | void (^outer)(void) = ^void(void) { |
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| 31 | int z = x; |
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| 32 | ++z; |
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| 33 | inner(); |
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| 34 | }; |
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| 35 | return outer; // expected-warning-re{{Address of stack-allocated block declared on line {{.+}} is captured by a returned block}} |
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| 36 | } |
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| 37 | |
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| 38 | |
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