1 // { dg-do compile { target c++11 } }
2 
3 // Copyright (C) 2007-2018 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 
24 using namespace std;
25 
26 struct foo
27 { };
28 
29 int
main()30 main()
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   tuple_element<0,const tuple<foo,void,int> >::type q4(q1);
38   tuple_element<2,const tuple<void,int,foo> >::type q5(q1);
39   tuple_element<0,volatile tuple<foo,void,int> >::type q6(q1);
40   tuple_element<2,volatile tuple<void,int,foo> >::type q7(q1);
41   tuple_element<0,const volatile tuple<foo,void,int> >::type q8(q1);
42   tuple_element<2,const volatile tuple<void,int,foo> >::type q9(q1);
43 }
44