1// { dg-options "-std=gnu++14" } 2// { dg-do compile } 3 4// Copyright (C) 2013-2015 Free Software Foundation, Inc. 5// 6// This file is part of the GNU ISO C++ Library. This library is free 7// software; you can redistribute it and/or modify it under the 8// terms of the GNU General Public License as published by the 9// Free Software Foundation; either version 3, or (at your option) 10// any later version. 11// 12// This library is distributed in the hope that it will be useful, 13// but WITHOUT ANY WARRANTY; without even the implied warranty of 14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15// GNU General Public License for more details. 16// 17// You should have received a copy of the GNU General Public License along 18// with this library; see the file COPYING3. If not see 19// <http://www.gnu.org/licenses/>. 20 21#include <type_traits> 22 23using namespace std; 24 25template<typename Trait, typename Result> 26 using test = is_same<typename Trait::type, Result>; 27 28static_assert( test<make_signed<const int>, make_signed_t<const int>>(), 29 "make_signed_t<const int>" ); 30 31static_assert( test<make_signed<unsigned>, make_signed_t<unsigned>>(), 32 "make_signed_t<unsigned>" ); 33 34static_assert( test<make_signed<char>, make_signed_t<char>>(), 35 "make_signed_t<char>" ); 36