1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2#include <pthread.h>
3#include <stdlib.h>
4#include <stdio.h>
5
6struct Cache {
7  int x;
8  explicit Cache(int x)
9    : x(x) {
10  }
11};
12
13void foo(Cache *my) {
14  static Cache *c = my ? my : new Cache(rand());
15  if (c->x >= RAND_MAX)
16    exit(1);
17}
18
19void *Thread(void *x) {
20  foo(new Cache(rand()));
21  return 0;
22}
23
24int main() {
25  pthread_t t[2];
26  pthread_create(&t[0], 0, Thread, 0);
27  pthread_create(&t[1], 0, Thread, 0);
28  pthread_join(t[0], 0);
29  pthread_join(t[1], 0);
30  printf("PASS\n");
31}
32
33// CHECK-NOT: WARNING: ThreadSanitizer: data race
34