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
28 lines
1022 B
C++
28 lines
1022 B
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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// <span>
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// template<class ElementType, size_t Extent>
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// inline constexpr bool ranges::enable_borrowed_range<
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// span<ElementType, Extent>> = true;
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#include <span>
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#include "test_macros.h"
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void test() {
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static_assert(std::ranges::enable_borrowed_range<std::span<int, 0> >);
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static_assert(std::ranges::enable_borrowed_range<std::span<int, 42> >);
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static_assert(std::ranges::enable_borrowed_range<std::span<int, std::dynamic_extent> >);
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static_assert(!std::ranges::enable_borrowed_range<std::span<int, 42>&>);
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static_assert(!std::ranges::enable_borrowed_range<std::span<int, 42> const>);
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}
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