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// { dg-options "-std=gnu++1y" }
// { dg-do compile }
// Copyright (C) 2013-2014 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>
using namespace std;
template<typename Trait, typename Result>
using test = is_same<typename Trait::type, Result>;
static_assert( test<make_signed<const int>, make_signed_t<const int>>(),
"make_signed_t<const int>" );
static_assert( test<make_signed<unsigned>, make_signed_t<unsigned>>(),
"make_signed_t<unsigned>" );
static_assert( test<make_signed<char>, make_signed_t<char>>(),
"make_signed_t<char>" );
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