1// RUN: %clang_tsan %s -o %t
2// RUN: %run %t 2>&1 | FileCheck %s --implicit-check-not='ThreadSanitizer'
3
4#include <dispatch/dispatch.h>
5
6#include <stdio.h>
7#include <string.h>
8
9long global = 42;
10
11int main(int argc, const char *argv[]) {
12 fprintf(stderr, format: "Hello world.\n");
13
14 dispatch_queue_t q = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
15 dispatch_semaphore_t sem = dispatch_semaphore_create(0);
16
17 const char *buffer = "buffer";
18 size_t size = strlen(s: buffer);
19
20 dispatch_data_t data = dispatch_data_create(buffer, size, q, ^{
21 fprintf(stderr, "Data destructor.\n");
22 global++;
23
24 dispatch_semaphore_signal(sem);
25 });
26 dispatch_release(data);
27
28 dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
29
30 data = dispatch_data_create(buffer, size, q, DISPATCH_DATA_DESTRUCTOR_DEFAULT);
31 dispatch_release(data);
32
33 fprintf(stderr, format: "Done.\n");
34}
35
36// CHECK: Hello world.
37// CHECK: Data destructor.
38// CHECK: Done.
39

source code of compiler-rt/test/tsan/libdispatch/data.c