1// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include <pthread.h>
3#include <unistd.h>
4
5int Global;
6
7void *Thread1(void *x) {
8  sleep(1);
9  Global = 42;
10  return x;
11}
12
13int main() {
14  pthread_t t;
15  pthread_create(&t, 0, Thread1, 0);
16  Global = 43;
17  pthread_join(t, 0);
18  return Global;
19}
20
21// CHECK: WARNING: ThreadSanitizer: data race
22