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1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2#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  fprintf(stderr, "PASS\n");31}32 33// CHECK-NOT: WARNING: ThreadSanitizer: data race34