1 // RUN: %clangxx_tsan %s -o %t
2 // RUN: %deflake %run %t | FileCheck %s
3 // RUN: %deflake %run %t 1 | FileCheck %s
4 
5 #include <pthread.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 
9 int main(int argc, char *argv[]) {
10   pthread_mutex_t *m = (pthread_mutex_t *)malloc(sizeof(pthread_mutex_t));
11   pthread_mutex_init(m, 0);
12   pthread_mutex_lock(m);
13   pthread_mutex_unlock(m);
14   pthread_mutex_destroy(m);
15 
16   if (argc > 1 && argv[1][0] == '1')
17     free(m);
18 
19   pthread_mutex_lock(m);
20   // CHECK: WARNING: ThreadSanitizer: use of an invalid mutex (e.g. uninitialized or destroyed)
21   // CHECK:   #0 pthread_mutex_lock
22   // CHECK:   #1 main {{.*}}mutex_lock_destroyed.cc:[[@LINE-3]]
23 
24   return 0;
25 }
26