d2baefae68
All supported compilers that support C++20 now support concepts. So, remove `_LIB_LIBCPP_HAS_NO_CONCEPTS` in favor of `_LIBCPP_STD_VER > 17`. Similarly in the tests, remove `// UNSUPPORTED: libcpp-no-concepts`. Differential Revision: https://reviews.llvm.org/D121528
45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// UNSUPPORTED: gcc-11
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// UNSUPPORTED: libcpp-has-no-incomplete-ranges
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// Tests that <value_> is a <copyable-box>.
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#include <cassert>
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#include <ranges>
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#include <utility>
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#include "test_macros.h"
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struct NotAssignable {
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NotAssignable() = default;
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NotAssignable(const NotAssignable&) = default;
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NotAssignable(NotAssignable&&) = default;
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NotAssignable& operator=(const NotAssignable&) = delete;
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NotAssignable& operator=(NotAssignable&&) = delete;
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};
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constexpr bool test() {
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const std::ranges::single_view<NotAssignable> a;
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std::ranges::single_view<NotAssignable> b;
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b = a;
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b = std::move(a);
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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