| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
|---|
| 2 | #include "test.h" |
|---|
| 3 | |
|---|
| 4 | void *Thread1(void *x) { |
|---|
| 5 | int *p = (int*)x; |
|---|
| 6 | p[0] = 1; |
|---|
| 7 | barrier_wait(barrier: &barrier); |
|---|
| 8 | return NULL; |
|---|
| 9 | } |
|---|
| 10 | |
|---|
| 11 | void *Thread2(void *x) { |
|---|
| 12 | barrier_wait(barrier: &barrier); |
|---|
| 13 | char *p = (char*)x; |
|---|
| 14 | p[2] = 1; |
|---|
| 15 | return NULL; |
|---|
| 16 | } |
|---|
| 17 | |
|---|
| 18 | int main() { |
|---|
| 19 | barrier_init(barrier: &barrier, count: 2); |
|---|
| 20 | int *data = new int(42); |
|---|
| 21 | print_address("ptr1=" , 1, data); |
|---|
| 22 | print_address("ptr2=" , 1, (char*)data + 2); |
|---|
| 23 | pthread_t t[2]; |
|---|
| 24 | pthread_create(newthread: &t[0], NULL, start_routine: Thread1, arg: data); |
|---|
| 25 | pthread_create(newthread: &t[1], NULL, start_routine: Thread2, arg: data); |
|---|
| 26 | pthread_join(th: t[0], NULL); |
|---|
| 27 | pthread_join(th: t[1], NULL); |
|---|
| 28 | delete data; |
|---|
| 29 | } |
|---|
| 30 | |
|---|
| 31 | // CHECK: ptr1=[[PTR1:0x[0-9,a-f]+]] |
|---|
| 32 | // CHECK: ptr2=[[PTR2:0x[0-9,a-f]+]] |
|---|
| 33 | // CHECK: WARNING: ThreadSanitizer: data race |
|---|
| 34 | // CHECK: Write of size 1 at [[PTR2]] by thread T2: |
|---|
| 35 | // CHECK: Previous write of size 4 at [[PTR1]] by thread T1: |
|---|
| 36 | |
|---|
