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