1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2 #include "test.h"
3 #include <string.h>
4 
5 char *data = new char[10];
6 char *data1 = new char[10];
7 char *data2 = new char[10];
8 
9 void *Thread1(void *x) {
10   static volatile int size = 1;
11   memcpy(data+5, data1, size);
12   barrier_wait(&barrier);
13   return NULL;
14 }
15 
16 void *Thread2(void *x) {
17   static volatile int size = 4;
18   barrier_wait(&barrier);
19   memcpy(data+3, data2, size);
20   return NULL;
21 }
22 
23 int main() {
24   barrier_init(&barrier, 2);
25   print_address("addr1=", 1, &data[3]);
26   print_address("addr2=", 1, &data[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: addr1=[[ADDR1:0x[0-9,a-f]+]]
36 // CHECK: addr2=[[ADDR2:0x[0-9,a-f]+]]
37 // CHECK: WARNING: ThreadSanitizer: data race
38 // CHECK:   Write of size 4 at [[ADDR1]] by thread T2:
39 // CHECK:     #0 {{(memcpy|memmove)}}
40 // CHECK:     #{{[12]}} Thread2
41 // CHECK:   Previous write of size 1 at [[ADDR2]] by thread T1:
42 // CHECK:     #0 {{(memcpy|memmove)}}
43 // CHECK:     #{{[12]}} Thread1
44