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// { dg-do compile { target c++11 } }
// { dg-require-gthreads "" }
// Copyright (C) 2018-2019 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/>.
#include <thread>
// PR libstdc++/84532
struct F
{
template<typename T, typename U>
void operator()(T, U, int&)
{
using std::is_same;
using std::reference_wrapper;
static_assert(is_same<T, reference_wrapper<int>>::value, "");
static_assert(is_same<U, reference_wrapper<const int>>::value, "");
}
};
int i = 0;
std::thread t(F{}, std::ref(i), std::cref(i), std::ref(i));
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