1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "test.h"
3#include <string.h>
4
5char *data0 = new char[10];
6char *data1 = new char[10];
7char *data2 = new char[10];
8
9void *Thread1(void *x) {
10  static volatile int size = 1;
11  static volatile int sink;
12  sink = memcmp(data0+5, data1, size);
13  barrier_wait(&barrier);
14  return NULL;
15}
16
17void *Thread2(void *x) {
18  static volatile int size = 4;
19  barrier_wait(&barrier);
20  memcpy(data0+5, data2, size);
21  return NULL;
22}
23
24int main() {
25  barrier_init(&barrier, 2);
26  print_address("addr=", 1, &data0[5]);
27  pthread_t t[2];
28  pthread_create(&t[0], NULL, Thread1, NULL);
29  pthread_create(&t[1], NULL, Thread2, NULL);
30  pthread_join(t[0], NULL);
31  pthread_join(t[1], NULL);
32  return 0;
33}
34
35// CHECK: addr=[[ADDR:0x[0-9,a-f]+]]
36// CHECK: WARNING: ThreadSanitizer: data race
37// CHECK:   Write of size 1 at [[ADDR]] by thread T2:
38// CHECK:     #0 {{(memcpy|memmove)}}
39// CHECK:     #1 Thread2
40// CHECK:   Previous read of size 1 at [[ADDR]] by thread T1:
41// CHECK:     #0 memcmp
42// CHECK:     #1 Thread1
43