mirror of git://gcc.gnu.org/git/gcc.git
38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
// { dg-do compile }
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// { dg-options "-std=gnu++11" }
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// Copyright (C) 2013 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <utility>
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#include <type_traits>
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typedef std::pair<int, long> test_type;
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static_assert( std::tuple_size<test_type>::value == 2, "size is 2" );
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template<std::size_t N, typename T>
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using Tuple_elt = typename std::tuple_element<N, T>::type;
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using std::is_same;
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static_assert( is_same<Tuple_elt<0, test_type>, test_type::first_type>::value,
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"first type is int" );
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static_assert( is_same<Tuple_elt<1, test_type>, test_type::second_type>::value,
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"second type is long" );
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