1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2 #include "test.h"
3 
4 _Atomic(int*) p;
5 
thr(void * a)6 void *thr(void *a) {
7   barrier_wait(&barrier);
8   int *pp = __c11_atomic_load(&p, __ATOMIC_RELAXED);
9   *pp = 42;
10   return 0;
11 }
12 
main()13 int main() {
14   barrier_init(&barrier, 2);
15   pthread_t th;
16   pthread_create(&th, 0, thr, p);
17   __c11_atomic_store(&p, new int, __ATOMIC_RELAXED);
18   barrier_wait(&barrier);
19   pthread_join(th, 0);
20 }
21 
22 // CHECK: data race
23 // CHECK:   Previous write
24 // CHECK:     #0 operator new
25 // CHECK:   Location is heap block
26 // CHECK:     #0 operator new
27