compiler-rt/test/tsan/malloc_stack.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3
   4 _Atomic(int*) p;
   5
   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
  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