mop_with_offset.cc revision 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 
1// RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
2#include <pthread.h>
3#include <stddef.h>
4#include <stdio.h>
5#include <unistd.h>
6
7void *Thread1(void *x) {
8  int *p = (int*)x;
9  p[0] = 1;
10  return NULL;
11}
12
13void *Thread2(void *x) {
14  sleep(1);
15  char *p = (char*)x;
16  p[2] = 1;
17  return NULL;
18}
19
20int main() {
21  int *data = new int(42);
22  fprintf(stderr, "ptr1=%p\n", data);
23  fprintf(stderr, "ptr2=%p\n", (char*)data + 2);
24  pthread_t t[2];
25  pthread_create(&t[0], NULL, Thread1, data);
26  pthread_create(&t[1], NULL, Thread2, data);
27  pthread_join(t[0], NULL);
28  pthread_join(t[1], NULL);
29  delete data;
30}
31
32// CHECK: ptr1=[[PTR1:0x[0-9,a-f]+]]
33// CHECK: ptr2=[[PTR2:0x[0-9,a-f]+]]
34// CHECK: WARNING: ThreadSanitizer: data race
35// CHECK:   Write of size 1 at [[PTR2]] by thread T2:
36// CHECK:   Previous write of size 4 at [[PTR1]] by thread T1:
37