40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
// { dg-options "-std=gnu++17" }
|
|
// { dg-do compile { target c++17 } }
|
|
|
|
// Copyright (C) 2017-2021 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/>.
|
|
|
|
#include <variant>
|
|
|
|
template<typename T, typename U> struct require_same;
|
|
template<typename T> struct require_same<T, T> { using type = void; };
|
|
|
|
template<typename T, typename U>
|
|
typename require_same<T, U>::type
|
|
check_type(U&) { }
|
|
|
|
void
|
|
test01()
|
|
{
|
|
std::variant<int, double> x(3);
|
|
|
|
std::variant copy = x;
|
|
check_type<decltype(x)>(copy);
|
|
std::variant move = std::move(x);
|
|
check_type<decltype(x)>(move);
|
|
}
|