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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/pair/astuple/astuple.cc
2 // { dg-options "-std=gnu++11" }
4 // Copyright (C) 2013 Free Software Foundation, Inc.
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)
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.
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/>.
22 #include <type_traits>
24 typedef std::pair
<int, long> test_type
;
26 static_assert( std::tuple_size
<test_type
>::value
== 2, "size is 2" );
28 template<std::size_t N
, typename T
>
29 using Tuple_elt
= typename
std::tuple_element
<N
, T
>::type
;
33 static_assert( is_same
<Tuple_elt
<0, test_type
>, test_type::first_type
>::value
,
34 "first type is int" );
36 static_assert( is_same
<Tuple_elt
<1, test_type
>, test_type::second_type
>::value
,
37 "second type is long" );