Stephen Hines | 6a211c5 | 2014-07-21 00:49:56 -0700 | [diff] [blame] | 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 2 | #include "test.h" |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 3 | #include <string.h> |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 4 | |
Stephen Hines | 6a211c5 | 2014-07-21 00:49:56 -0700 | [diff] [blame] | 5 | int x[4], z[4]; |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 6 | |
| 7 | void *MemCpyThread(void *a) { |
| 8 | memcpy((int*)a, z, 16); |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 9 | barrier_wait(&barrier); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 10 | return NULL; |
| 11 | } |
| 12 | |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 13 | void *MemSetThread(void *a) { |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 14 | barrier_wait(&barrier); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 15 | memset((int*)a, 0, 16); |
| 16 | return NULL; |
| 17 | } |
| 18 | |
| 19 | int main() { |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 20 | barrier_init(&barrier, 2); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 21 | pthread_t t[2]; |
| 22 | // Race on x between memcpy and memset |
| 23 | pthread_create(&t[0], NULL, MemCpyThread, x); |
| 24 | pthread_create(&t[1], NULL, MemSetThread, x); |
| 25 | pthread_join(t[0], NULL); |
| 26 | pthread_join(t[1], NULL); |
Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 27 | printf("PASS\n"); |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | // CHECK: WARNING: ThreadSanitizer: data race |
| 32 | // CHECK: #0 memset |
| 33 | // CHECK: #1 MemSetThread |
| 34 | // CHECK: Previous write |
| 35 | // CHECK: #0 memcpy |
| 36 | // CHECK: #1 MemCpyThread |
| 37 | |