| //===----------------------------------------------------------------------===// |
| // |
| // 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++03, c++11, c++14, c++17 |
| // UNSUPPORTED: libcpp-no-concepts |
| // UNSUPPORTED: gcc-11 |
| // UNSUPPORTED: libcpp-has-no-incomplete-ranges |
| |
| // Tests that <value_> is a <copyable-box>. |
| |
| #include <ranges> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| struct NotAssignable { |
| NotAssignable() = default; |
| NotAssignable(const NotAssignable&) = default; |
| NotAssignable(NotAssignable&&) = default; |
| |
| NotAssignable& operator=(const NotAssignable&) = delete; |
| NotAssignable& operator=(NotAssignable&&) = delete; |
| }; |
| |
| constexpr bool test() { |
| const std::ranges::single_view<NotAssignable> a; |
| std::ranges::single_view<NotAssignable> b; |
| b = a; |
| b = std::move(a); |
| |
| return true; |
| } |
| |
| int main(int, char**) { |
| test(); |
| static_assert(test()); |
| |
| return 0; |
| } |