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