| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03, c++11, c++14 |
| |
| // <optional> |
| |
| // optional(optional<T>&& rhs); |
| |
| #include <optional> |
| #include <string> |
| #include <type_traits> |
| #include <utility> |
| |
| #include "test_macros.h" |
| |
| using std::optional; |
| |
| struct X {}; |
| |
| struct Y |
| { |
| Y() = default; |
| Y(Y&&) {} |
| }; |
| |
| struct Z |
| { |
| Z() = default; |
| Z(Z&&) = delete; |
| Z(const Z&) = delete; |
| Z& operator=(Z&&) = delete; |
| Z& operator=(const Z&) = delete; |
| }; |
| |
| int main(int, char**) |
| { |
| { |
| using T = int; |
| static_assert((std::is_trivially_copy_constructible<optional<T>>::value), ""); |
| constexpr optional<T> opt; |
| constexpr optional<T> opt2 = std::move(opt); |
| (void)opt2; |
| } |
| { |
| using T = X; |
| static_assert((std::is_trivially_copy_constructible<optional<T>>::value), ""); |
| constexpr optional<T> opt; |
| constexpr optional<T> opt2 = std::move(opt); |
| (void)opt2; |
| } |
| static_assert(!(std::is_trivially_move_constructible<optional<Y>>::value), ""); |
| static_assert(!(std::is_trivially_move_constructible<optional<std::string>>::value), ""); |
| |
| static_assert(!(std::is_move_constructible<optional<Z>>::value), ""); |
| |
| return 0; |
| } |