1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "test.h"
3
4int Global;
5pthread_mutex_t *mtx;
6
7void *Thread1(void *x) {
8 barrier_wait(&barrier);
9 pthread_mutex_lock(mtx);
10 Global++;
11 pthread_mutex_unlock(mtx);
12 return NULL;
13}
14
15void *Thread2(void *x) {
16 Global--;
17 barrier_wait(&barrier);
18 return NULL;
19}
20
21int main() {
22 barrier_init(&barrier, 2);
23 // CHECK: WARNING: ThreadSanitizer: data race
24 // CHECK: Write of size 4 at {{.*}} by thread T1
25 // CHECK: (mutexes: write [[M1:M[0-9]+]]):
26 // CHECK: Previous write of size 4 at {{.*}} by thread T2:
27 // CHECK: Mutex [[M1]] (0x{{.*}}) created at:
28 // CHECK: #0 pthread_mutex_init
29 // CHECK: #1 main {{.*}}mutexset8.cpp
30 mtx = new pthread_mutex_t;
31 pthread_mutex_init(mtx, 0);
32 pthread_t t[2];
33 pthread_create(&t[0], NULL, Thread1, NULL);
34 pthread_create(&t[1], NULL, Thread2, NULL);
35 pthread_join(t[0], NULL);
36 pthread_join(t[1], NULL);
37 pthread_mutex_destroy(mtx);
38 delete mtx;
39}
40