1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2*bcaeed49SFangrui Song #include "test.h"
3*bcaeed49SFangrui Song
4*bcaeed49SFangrui Song int Global;
5*bcaeed49SFangrui Song pthread_mutex_t mtx;
6*bcaeed49SFangrui Song
Thread1(void * x)7*bcaeed49SFangrui Song void *Thread1(void *x) {
8*bcaeed49SFangrui Song pthread_mutex_lock(&mtx);
9*bcaeed49SFangrui Song Global++;
10*bcaeed49SFangrui Song pthread_mutex_unlock(&mtx);
11*bcaeed49SFangrui Song barrier_wait(&barrier);
12*bcaeed49SFangrui Song return NULL;
13*bcaeed49SFangrui Song }
14*bcaeed49SFangrui Song
Thread2(void * x)15*bcaeed49SFangrui Song void *Thread2(void *x) {
16*bcaeed49SFangrui Song barrier_wait(&barrier);
17*bcaeed49SFangrui Song Global--;
18*bcaeed49SFangrui Song return NULL;
19*bcaeed49SFangrui Song }
20*bcaeed49SFangrui Song
main()21*bcaeed49SFangrui Song int main() {
22*bcaeed49SFangrui Song barrier_init(&barrier, 2);
23*bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: data race
24*bcaeed49SFangrui Song // CHECK: Write of size 4 at {{.*}} by thread T2:
25*bcaeed49SFangrui Song // CHECK: Previous write of size 4 at {{.*}} by thread T1
26*bcaeed49SFangrui Song // CHECK: (mutexes: write [[M1:M[0-9]+]]):
27*bcaeed49SFangrui Song // CHECK: Mutex [[M1]] (0x{{.*}}) created at:
28*bcaeed49SFangrui Song // CHECK: #0 pthread_mutex_init
29*bcaeed49SFangrui Song // CHECK: #1 main {{.*}}mutexset2.cpp:[[@LINE+1]]
30*bcaeed49SFangrui Song pthread_mutex_init(&mtx, 0);
31*bcaeed49SFangrui Song pthread_t t[2];
32*bcaeed49SFangrui Song pthread_create(&t[0], NULL, Thread1, NULL);
33*bcaeed49SFangrui Song pthread_create(&t[1], NULL, Thread2, NULL);
34*bcaeed49SFangrui Song pthread_join(t[0], NULL);
35*bcaeed49SFangrui Song pthread_join(t[1], NULL);
36*bcaeed49SFangrui Song pthread_mutex_destroy(&mtx);
37*bcaeed49SFangrui Song }
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