test/tsan/malloc_stack.cc

   1 // RUN: %clang_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
   2 #include <pthread.h>
   3 #include <unistd.h>
   4
   5 _Atomic(int*) p;
   6
   7 void *thr(void *a) {
   8   sleep(1);
   9   int *pp = __c11_atomic_load(&p, __ATOMIC_RELAXED);
  10   *pp = 42;
  11   return 0;
  12 }
  13
  14 int main() {
  15   pthread_t th;
  16   pthread_create(&th, 0, thr, p);
  17   __c11_atomic_store(&p, new int, __ATOMIC_RELAXED);
  18   pthread_join(th, 0);
  19 }
  20
  21 // CHECK: data race
  22 // CHECK:   Previous write
  23 // CHECK:     #0 operator new
  24 // CHECK:   Location is heap block
  25 // CHECK:     #0 operator new