text: //===----------------------------------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  // <memory>
  
  // default_delete
  
  #include <memory>
  #include <cassert>
  
  #include "test_macros.h"
  
  struct A
  {
      static int count;
      A() {++count;}
      A(const A&) {++count;}
      virtual ~A() {--count;}
  };
  
  int A::count = 0;
  
  struct B
      : public A
  {
      static int count;
      B() {++count;}
      B(const B& other) : A(other) {++count;}
      virtual ~B() {--count;}
  };
  
  int B::count = 0;
  
  int main(int, char**)
  {
      std::default_delete<B> d2;
      std::default_delete<A> d1 = d2;
      A* p = new B;
      assert(A::count == 1);
      assert(B::count == 1);
      d1(p);
      assert(A::count == 0);
      assert(B::count == 0);
  
    return 0;
  }
  