1// RUN: %check_clang_tidy %s bugprone-no-escape %t 2// RUN: %check_clang_tidy %s -assume-filename=bugprone-no-escape.c bugprone-no-escape %t -- -- -fblocks 3 4typedef struct dispatch_queue_s *dispatch_queue_t; 5typedef struct dispatch_time_s *dispatch_time_t; 6typedef void (^dispatch_block_t)(void); 7void dispatch_async(dispatch_queue_t queue, dispatch_block_t block); 8void dispatch_after(dispatch_time_t when, dispatch_queue_t queue, dispatch_block_t block); 9 10extern dispatch_queue_t queue; 11 12void test_noescape_attribute(__attribute__((noescape)) int *p, int *q) { 13 dispatch_async(queue, ^{ 14 *p = 123; 15 // CHECK-MESSAGES: :[[@LINE-2]]:25: warning: pointer 'p' with attribute 'noescape' is captured by an asynchronously-executed block [bugprone-no-escape] 16 // CHECK-MESSAGES: :[[@LINE-4]]:30: note: the 'noescape' attribute is declared here. 17 }); 18 19 dispatch_after(456, queue, ^{ 20 *p = 789; 21 // CHECK-MESSAGES: :[[@LINE-2]]:30: warning: pointer 'p' with attribute 'noescape' is captured by an asynchronously-executed block [bugprone-no-escape] 22 }); 23 24 dispatch_async(queue, ^{ 25 *q = 0; 26 // CHECK-MESSAGES-NOT: :[[@LINE-2]]:25: warning: pointer 'q' with attribute 'noescape' is captured by an asynchronously-executed block 27 }); 28} 29