1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "test.h"
3
4int Global;
5pthread_mutex_t mtx1;
6pthread_spinlock_t mtx2;
7pthread_rwlock_t mtx3;
8
9void *Thread1(void *x) {
10  barrier_wait(&barrier);
11  pthread_mutex_lock(&mtx1);
12  Global++;
13  pthread_mutex_unlock(&mtx1);
14  return NULL;
15}
16
17void *Thread2(void *x) {
18  pthread_mutex_lock(&mtx1);
19  pthread_mutex_unlock(&mtx1);
20  pthread_spin_lock(&mtx2);
21  pthread_rwlock_rdlock(&mtx3);
22  Global--;
23  pthread_spin_unlock(&mtx2);
24  pthread_rwlock_unlock(&mtx3);
25  barrier_wait(&barrier);
26  return NULL;
27}
28
29int main() {
30  barrier_init(&barrier, 2);
31  // CHECK: WARNING: ThreadSanitizer: data race
32  // CHECK:   Write of size 4 at {{.*}} by thread T1
33  // CHECK:                          (mutexes: write [[M1:M[0-9]+]]):
34  // CHECK:   Previous write of size 4 at {{.*}} by thread T2
35  // CHECK:               (mutexes: write [[M2:M[0-9]+]], read [[M3:M[0-9]+]]):
36  // CHECK:   Mutex [[M1]] (0x{{.*}}) created at:
37  // CHECK:     #1 main {{.*}}/mutexset6.cc:[[@LINE+5]]
38  // CHECK:   Mutex [[M2]] (0x{{.*}}) created at:
39  // CHECK:     #1 main {{.*}}/mutexset6.cc:[[@LINE+4]]
40  // CHECK:   Mutex [[M3]] (0x{{.*}}) created at:
41  // CHECK:     #1 main {{.*}}/mutexset6.cc:[[@LINE+3]]
42  pthread_mutex_init(&mtx1, 0);
43  pthread_spin_init(&mtx2, 0);
44  pthread_rwlock_init(&mtx3, 0);
45  pthread_t t[2];
46  pthread_create(&t[0], NULL, Thread1, NULL);
47  pthread_create(&t[1], NULL, Thread2, NULL);
48  pthread_join(t[0], NULL);
49  pthread_join(t[1], NULL);
50  pthread_mutex_destroy(&mtx1);
51  pthread_spin_destroy(&mtx2);
52  pthread_rwlock_destroy(&mtx3);
53}
54