1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include <pthread.h>
3#include <stdio.h>
4#include <unistd.h>
5
6extern "C" void AnnotateThreadName(const char *f, int l, const char *name);
7
8int Global;
9
10void *Thread1(void *x) {
11  sleep(1);
12  AnnotateThreadName(__FILE__, __LINE__, "Thread1");
13  Global++;
14  return NULL;
15}
16
17void *Thread2(void *x) {
18#if SANITIZER_LINUX && __GLIBC_PREREQ(2, 12)
19  pthread_setname_np(pthread_self(), "Thread2");
20#else
21  AnnotateThreadName(__FILE__, __LINE__, "Thread2");
22#endif
23  Global--;
24  return NULL;
25}
26
27int main() {
28  pthread_t t[2];
29  pthread_create(&t[0], NULL, Thread1, NULL);
30  pthread_create(&t[1], NULL, Thread2, NULL);
31  pthread_join(t[0], NULL);
32  pthread_join(t[1], NULL);
33}
34
35// CHECK: WARNING: ThreadSanitizer: data race
36// CHECK:   Thread T1 'Thread1'
37// CHECK:   Thread T2 'Thread2'
38
39