Pirama Arumuga Nainar | 799172d | 2016-03-03 15:50:30 -0800 | [diff] [blame^] | 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
| 2 | #include "test.h" |
| 3 | #include <string.h> |
| 4 | |
| 5 | char *data0 = 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 | static volatile int sink; |
| 12 | sink = memcmp(data0+5, data1, size); |
| 13 | barrier_wait(&barrier); |
| 14 | return NULL; |
| 15 | } |
| 16 | |
| 17 | void *Thread2(void *x) { |
| 18 | static volatile int size = 4; |
| 19 | barrier_wait(&barrier); |
| 20 | memcpy(data0+5, data2, size); |
| 21 | return NULL; |
| 22 | } |
| 23 | |
| 24 | int 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 |