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// Copyright (C) 2019-2023 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/>.
// { dg-do compile { target c++11 } }
#include <iterator>
using std::bidirectional_iterator_tag;
using std::forward_iterator_tag;
using std::iterator_traits;
static_assert( std::is_empty<bidirectional_iterator_tag>::value );
static_assert( std::is_trivially_copy_constructible<bidirectional_iterator_tag>::value );
static_assert( std::is_base_of<forward_iterator_tag,
bidirectional_iterator_tag>::value );
static_assert( std::is_convertible<bidirectional_iterator_tag*,
forward_iterator_tag*>::value );
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