38 lines
1.0 KiB
Plaintext
38 lines
1.0 KiB
Plaintext
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// RUN: %clang_analyze_cc1 -triple x86_64-apple-darwin10 -analyzer-checker=core,alpha.core.StackAddressAsyncEscape -fblocks -verify %s
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typedef struct dispatch_queue_s *dispatch_queue_t;
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typedef void (^dispatch_block_t)(void);
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void dispatch_async(dispatch_queue_t queue, dispatch_block_t block);
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extern dispatch_queue_t queue;
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void test_block_inside_block_async_no_leak() {
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int x = 123;
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int *p = &x;
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void (^inner)(void) = ^void(void) {
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int y = x;
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++y;
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};
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// Block_copy(...) copies the captured block ("inner") too,
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// there is no leak in this case.
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dispatch_async(queue, ^void(void) {
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int z = x;
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++z;
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inner();
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}); // no-warning
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}
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dispatch_block_t test_block_inside_block_async_leak() {
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int x = 123;
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void (^inner)(void) = ^void(void) {
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int y = x;
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++y;
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};
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void (^outer)(void) = ^void(void) {
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int z = x;
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++z;
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inner();
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};
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return outer; // expected-warning-re{{Address of stack-allocated block declared on line {{.+}} is captured by a returned block}}
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}
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