text: // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
  #include "test.h"
  #include <string.h>
  
  char *data = new char[10];
  char *data1 = new char[10];
  char *data2 = new char[10];
  
  void *Thread1(void *x) {
    static volatile int size = 1;
    memcpy(data+5, data1, size);
    barrier_wait(&barrier);
    return NULL;
  }
  
  void *Thread2(void *x) {
    static volatile int size = 4;
    barrier_wait(&barrier);
    memcpy(data+3, data2, size);
    return NULL;
  }
  
  int main() {
    barrier_init(&barrier, 2);
    fprintf(stderr, "addr=%p\n", &data[5]);
    pthread_t t[2];
    pthread_create(&t[0], NULL, Thread1, NULL);
    pthread_create(&t[1], NULL, Thread2, NULL);
    pthread_join(t[0], NULL);
    pthread_join(t[1], NULL);
    return 0;
  }
  
  // CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
  // CHECK: WARNING: ThreadSanitizer: data race
  // CHECK:   Write of size 1 at [[ADDR]] by thread T2:
  // CHECK:     #0 memcpy
  // CHECK:     #1 Thread2
  // CHECK:   Previous write of size 1 at [[ADDR]] by thread T1:
  // CHECK:     #0 memcpy
  // CHECK:     #1 Thread1
  