| // { dg-do compile { target c++11 } } |
| // { dg-require-gthreads "" } |
| |
| // Copyright (C) 2018-2021 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 <future> |
| |
| // 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; |
| auto fut = std::async(F{}, std::ref(i), std::cref(i), std::ref(i)); |
