// { dg-do compile { target c++11 } }

// Copyright (C) 2015-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

#include <type_traits>

struct ExplicitDefault
{
  explicit ExplicitDefault() {}
};

struct ExplicitDefaultDefault
{
  explicit ExplicitDefaultDefault() = default;
};

void test01()
{
  using std::__is_implicitly_default_constructible;
  // Positive tests.
  static_assert(__is_implicitly_default_constructible<int>::value, "");
  // Negative tests.
  static_assert(!__is_implicitly_default_constructible<int&>::value, "");
  static_assert(!__is_implicitly_default_constructible<
                ExplicitDefault>::value, "");
  static_assert(!__is_implicitly_default_constructible<
                ExplicitDefaultDefault>::value, "");
}