// Copyright (C) 2017-2022 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/>.

// { dg-do compile { target c++17 } }
// { dg-require-atomic-builtins "" }

#include <atomic>

template<typename T>
constexpr bool check()
{
  typename std::atomic<T>::value_type* pv = (T*)nullptr;
  typename std::atomic<T>::difference_type* pd = (std::ptrdiff_t*)nullptr;
  return true;
}

static_assert( check<int*>(), "" );
static_assert( check<void*>(), "" );
static_assert( check<void(*)()>(), "" );
struct X { };
static_assert( check<X*>(), "" );