1// RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
2#include <pthread.h>
3#include <stddef.h>
4
5void *Thread(void *a) {
6  *(int*)a = 43;
7  return 0;
8}
9
10int main() {
11  int Var = 42;
12  pthread_t t;
13  pthread_create(&t, 0, Thread, &Var);
14  Var = 43;
15  pthread_join(t, 0);
16}
17
18// CHECK: WARNING: ThreadSanitizer: data race
19// CHECK:   Location is stack of main thread.
20
21