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// { dg-do compile { target c++11 } }
// Copyright (C) 2011-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// NOTE: This makes use of the fact that we know how moveable
// is implemented on pair, and also vector. If the implementation
// changes this test may begin to fail.
#include <tuple>
// make_tuple
void
test_make_tuple()
{
{
typedef std::tuple<int, float> tuple_type;
constexpr tuple_type p1 __attribute__((unused))
= std::make_tuple(22, 22.222);
}
{
typedef std::tuple<int, float, int> tuple_type;
constexpr tuple_type p1 __attribute__((unused))
= std::make_tuple(22, 22.222, 77799);
}
}
// forward_as_tuple
void
test_forward_as_tuple()
{
{
static int i(22);
static float f(22.222);
typedef std::tuple<int&, float&&> tuple_type;
constexpr tuple_type p1 __attribute__((unused))
= std::forward_as_tuple(i, std::move(f));
}
{
static int i(22);
static float f(22.222);
static int ii(77799);
typedef std::tuple<int&, float&, int&&> tuple_type;
constexpr tuple_type p1 __attribute__((unused))
= std::forward_as_tuple(i, f, std::move(ii));
}
}
// tie
void
test_tie()
{
{
static int i(22);
static float f(22.222);
typedef std::tuple<int&, float&> tuple_type;
constexpr tuple_type p1 __attribute__((unused))
= std::tie(i, f);
}
{
static int i(22);
static float f(22.222);
static const int ii(77799);
typedef std::tuple<int&, float&, const int&> tuple_type;
constexpr tuple_type p1 __attribute__((unused))
= std::tie(i, f, ii);
}
}
// get
void
test_get()
{
{
typedef std::tuple<int, float> tuple_type;
constexpr tuple_type t1 { 55, 77.77 };
constexpr auto var __attribute__((unused))
= std::get<1>(t1);
}
{
typedef std::tuple<int, float, int> tuple_type;
constexpr tuple_type t1 { 55, 77.77, 99 };
constexpr auto var __attribute__((unused))
= std::get<2>(t1);
}
}
// tuple_cat
void
test_tuple_cat()
{
typedef std::tuple<int, float> tuple_type1;
typedef std::tuple<int, int, float> tuple_type2;
constexpr tuple_type1 t1 { 55, 77.77 };
constexpr tuple_type2 t2 { 55, 99, 77.77 };
constexpr auto cat1 __attribute__((unused)) = std::tuple_cat(t1, t2);
}
namespace {
template<class T>
constexpr int zero_from_anything(T)
{
return 0;
}
}
// ignore, see LWG 2773
void
test_ignore()
{
constexpr auto ign1 __attribute__((unused)) = std::ignore;
constexpr auto ign2 __attribute__((unused)) = std::make_tuple(std::ignore);
constexpr int ign3 __attribute__((unused)) = zero_from_anything(std::ignore);
}
int
main()
{
test_make_tuple();
test_forward_as_tuple();
test_tie();
test_get();
test_tuple_cat();
test_ignore();
return 0;
}
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