mutexset7.cc revision 6a211c5814e25d6745a5058cc0e499e5235d3821 
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include <pthread.h>
3#include <stdio.h>
4#include <unistd.h>
5
6int Global;
7__thread int huge[1024*1024];
8
9void *Thread1(void *x) {
10  sleep(1);
11  Global++;
12  return NULL;
13}
14
15void *Thread2(void *x) {
16  pthread_mutex_t *mtx = new pthread_mutex_t;
17  pthread_mutex_init(mtx, 0);
18  pthread_mutex_lock(mtx);
19  Global--;
20  pthread_mutex_unlock(mtx);
21  pthread_mutex_destroy(mtx);
22  delete mtx;
23  return NULL;
24}
25
26int main() {
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}
33
34// CHECK: WARNING: ThreadSanitizer: data race
35// CHECK: Write of size 4 at {{.*}} by thread T1:
36// CHECK: Previous write of size 4 at {{.*}} by thread T2
37// CHECK:                                      (mutexes: write [[M1:M[0-9]+]]):
38// CHECK: Mutex [[M1]] is already destroyed
39// CHECK-NOT: Mutex {{.*}} created at
40
41