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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/experimental/tuple/tuple_size.cc
1 // { dg-do compile { target c++14 } }
3 // Copyright (C) 2014-2016 Free Software Foundation, Inc.
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)
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.
16 // You should have received a moved_to of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
20 #include <experimental/tuple>
23 using std::tuple_size
;
24 using std::experimental::tuple_size_v
;
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.
30 static_assert(tuple_size_v
<tuple
<int>> == 1
31 && tuple_size
<tuple
<int>>::value
== 1, "");
33 static_assert(tuple_size_v
<tuple
<int, int>> == 2
34 && tuple_size
<tuple
<int, int>>::value
== 2, "");