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
  //
  //===----------------------------------------------------------------------===//
  
  // UNSUPPORTED: c++03, c++11, c++14
  // <optional>
  
  // ~optional();
  
  #include <optional>
  #include <type_traits>
  #include <cassert>
  
  #include "test_macros.h"
  
  using std::optional;
  
  struct PODType {
    int value;
    int value2;
  };
  
  class X
  {
  public:
      static bool dtor_called;
      X() = default;
      ~X() {dtor_called = true;}
  };
  
  bool X::dtor_called = false;
  
  int main(int, char**)
  {
      {
          typedef int T;
          static_assert(std::is_trivially_destructible<T>::value, "");
          static_assert(std::is_trivially_destructible<optional<T>>::value, "");
      }
      {
          typedef double T;
          static_assert(std::is_trivially_destructible<T>::value, "");
          static_assert(std::is_trivially_destructible<optional<T>>::value, "");
      }
      {
          typedef PODType T;
          static_assert(std::is_trivially_destructible<T>::value, "");
          static_assert(std::is_trivially_destructible<optional<T>>::value, "");
      }
      {
          typedef X T;
          static_assert(!std::is_trivially_destructible<T>::value, "");
          static_assert(!std::is_trivially_destructible<optional<T>>::value, "");
          {
              X x;
              optional<X> opt{x};
              assert(X::dtor_called == false);
          }
          assert(X::dtor_called == true);
      }
  
    return 0;
  }
  