| // { dg-do compile { target c++17 } } |
| |
| // Copyright (C) 2014-2021 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 <optional> |
| #include <type_traits> |
| #include <stdexcept> |
| |
| template<typename T> |
| using check1_t = std::optional<T>; |
| |
| using check2_t = std::in_place_t; |
| using check3_t = std::nullopt_t; |
| using check4_t = std::bad_optional_access; |
| |
| static_assert(!std::is_base_of<std::logic_error, check4_t>::value, |
| "bad_optional_access must derive from exception"); |
| static_assert(std::is_base_of<std::exception, check4_t>::value, |
| "bad_optional_access must derive from exception"); |
