// Copyright (C) 2021-2022 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-options "-std=gnu++2a" }
// { dg-do compile { target c++2a } }

// Verify LWG 3391 changes.

#include <iterator>
#include <ranges>

#include <testsuite_iterators.h>

using __gnu_test::test_range;
using __gnu_test::input_iterator_wrapper_nocopy;

void
test01()
{
  extern test_range<int, input_iterator_wrapper_nocopy> rx;
  auto v = rx | std::views::take(5);
  std::ranges::begin(v) != std::ranges::end(v);
}