1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2 #include "test.h"
3 
4 // OS X doesn't have pthread_setname_np(tid, name).
5 // UNSUPPORTED: darwin
6 
7 #if defined(__FreeBSD__)
8 #include <pthread_np.h>
9 #define pthread_setname_np pthread_set_name_np
10 #endif
11 
12 long long Global;
13 
14 void *Thread1(void *x) {
15   barrier_wait(&barrier);
16   Global++;
17   return 0;
18 }
19 
20 void *Thread2(void *x) {
21   pthread_setname_np(pthread_self(), "foobar2");
22   Global--;
23   barrier_wait(&barrier);
24   return 0;
25 }
26 
27 int main() {
28   barrier_init(&barrier, 3);
29   pthread_t t[2];
30   pthread_create(&t[0], 0, Thread1, 0);
31   pthread_create(&t[1], 0, Thread2, 0);
32   pthread_setname_np(t[0], "foobar1");
33   barrier_wait(&barrier);
34   pthread_join(t[0], NULL);
35   pthread_join(t[1], NULL);
36 }
37 
38 // CHECK: WARNING: ThreadSanitizer: data race
39 // CHECK:   Thread T1 'foobar1'
40 // CHECK:   Thread T2 'foobar2'
41