1// { dg-options "-std=gnu++0x" } 2 3// Copyright (C) 2007, 2009 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 3, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20// Tuple 21 22#include <tuple> 23 24using namespace std; 25 26struct foo 27{ }; 28 29int 30main() 31{ 32 // As foo isn't constructible from anything else, this 33 // lets us check if type is returning foo when it should 34 foo q1; 35 tuple_element<0,tuple<foo,void,int> >::type q2(q1); 36 tuple_element<2,tuple<void,int,foo> >::type q3(q1); 37} 38