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
46 lines
1.2 KiB
C++
46 lines
1.2 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: libcpp-has-no-incomplete-ranges
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// <ranges>
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// template<class T>
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// concept view = ...;
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#include <ranges>
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#include "test_macros.h"
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struct View : std::ranges::view_base {
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View() = default;
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View(View&&) = default;
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View& operator=(View&&) = default;
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friend int* begin(View&);
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friend int* begin(View const&);
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friend int* end(View&);
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friend int* end(View const&);
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};
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namespace subsume_range {
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template <std::ranges::view>
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constexpr bool test() { return true; }
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template <std::ranges::range>
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constexpr bool test() { return false; }
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static_assert(test<View>());
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}
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namespace subsume_movable {
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template <std::ranges::view>
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constexpr bool test() { return true; }
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template <std::movable>
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constexpr bool test() { return false; }
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static_assert(test<View>());
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}
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