1 // { dg-do compile { target c++14 } }
2 
3 // Copyright (C) 2014-2020 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 #include <experimental/tuple>
21 
22 using std::tuple;
23 using std::tuple_size;
24 using std::experimental::tuple_size_v;
25 
26 // These tests are rather simple, the front-end tests already test
27 // variable templates, and the library tests for the underlying
28 // traits are more elaborate. These are just simple sanity tests.
29 
30 static_assert(tuple_size_v<tuple<int>> == 1
31 	      && tuple_size<tuple<int>>::value == 1, "");
32 
33 static_assert(tuple_size_v<tuple<int, int>> == 2
34 	      && tuple_size<tuple<int, int>>::value == 2, "");
35