compiler-rt/test/tsan/vptr_harmful_race4.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3
   4 struct A {
   5   virtual void F() {
   6   }
   7
   8   virtual ~A() {
   9   }
  10 };
  11
  12 struct B : A {
  13   virtual void F() {
  14   }
  15 };
  16
  17 void *Thread(void *x) {
  18   barrier_wait(&barrier);
  19   ((A*)x)->F();
  20   return 0;
  21 }
  22
  23 int main() {
  24   barrier_init(&barrier, 2);
  25   A *obj = new B;
  26   pthread_t t;
  27   pthread_create(&t, 0, Thread, obj);
  28   delete obj;
  29   barrier_wait(&barrier);
  30   pthread_join(t, 0);
  31 }
  32
  33 // CHECK: WARNING: ThreadSanitizer: heap-use-after-free (virtual call vs free)
  34