| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17 |
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| 10 | |
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| 11 | // Tests that <value_> is a <copyable-box>. |
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| 12 | |
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| 13 | #include <cassert> |
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| 14 | #include <ranges> |
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| 15 | #include <utility> |
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| 16 | |
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| 17 | #include "test_macros.h" |
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| 18 | |
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| 19 | struct NotAssignable { |
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| 20 | NotAssignable() = default; |
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| 21 | NotAssignable(const NotAssignable&) = default; |
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| 22 | NotAssignable(NotAssignable&&) = default; |
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| 23 | |
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| 24 | NotAssignable& operator=(const NotAssignable&) = delete; |
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| 25 | NotAssignable& operator=(NotAssignable&&) = delete; |
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| 26 | }; |
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| 27 | |
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| 28 | constexpr bool test() { |
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| 29 | const std::ranges::single_view<NotAssignable> a; |
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| 30 | std::ranges::single_view<NotAssignable> b; |
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| 31 | b = a; |
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| 32 | b = std::move(a); |
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| 33 | |
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| 34 | return true; |
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| 35 | } |
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| 36 | |
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| 37 | int main(int, char**) { |
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| 38 | test(); |
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| 39 | static_assert(test()); |
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| 40 | |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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