1 // RUN: %clangxx_tsan %darwin_min_target_with_tls_support -O1 %s -o %t && \
2 // RUN:   %deflake %run %t | FileCheck %s
3 #include "test.h"
4 
5 int Global;
6 __thread int huge[1024*1024];
7 
8 void *Thread1(void *x) {
9   barrier_wait(&barrier);
10   Global++;
11   return NULL;
12 }
13 
14 void *Thread2(void *x) {
15   pthread_mutex_t *mtx = new pthread_mutex_t;
16   pthread_mutex_init(mtx, 0);
17   pthread_mutex_lock(mtx);
18   Global--;
19   pthread_mutex_unlock(mtx);
20   pthread_mutex_destroy(mtx);
21   delete mtx;
22   barrier_wait(&barrier);
23   return NULL;
24 }
25 
26 int main() {
27   barrier_init(&barrier, 2);
28   pthread_t t[2];
29   pthread_create(&t[0], NULL, Thread1, NULL);
30   pthread_create(&t[1], NULL, Thread2, NULL);
31   pthread_join(t[0], NULL);
32   pthread_join(t[1], NULL);
33 }
34 
35 // CHECK: WARNING: ThreadSanitizer: data race
36 // CHECK: Write of size 4 at {{.*}} by thread T1:
37 // CHECK: Previous write of size 4 at {{.*}} by thread T2
38 // CHECK:                                      (mutexes: write [[M1:M[0-9]+]]):
39 // CHECK: Mutex [[M1]] (0x{{.*}}) created at:
40 // CHECK:   #0 pthread_mutex_init
41 // CHECK:   #1 Thread2
42