forked from OSchip/llvm-project
43 lines
1.4 KiB
C++
43 lines
1.4 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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// std::ranges::borrowed_subrange_t;
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#include <ranges>
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#include <concepts>
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#include <span>
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#include <string>
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#include <string_view>
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#include <vector>
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static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::string>, std::ranges::dangling>);
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static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::string&&>, std::ranges::dangling>);
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static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::vector<int> >, std::ranges::dangling>);
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static_assert(
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std::same_as<std::ranges::borrowed_subrange_t<std::string&>, std::ranges::subrange<std::string::iterator> >);
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static_assert(
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std::same_as<std::ranges::borrowed_subrange_t<std::span<int> >, std::ranges::subrange<std::span<int>::iterator> >);
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static_assert(std::same_as<std::ranges::borrowed_subrange_t<std::string_view>,
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std::ranges::subrange<std::string_view::iterator> >);
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template <class T>
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constexpr bool has_type = requires {
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typename std::ranges::borrowed_subrange_t<T>;
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};
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static_assert(!has_type<int>);
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struct S {};
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static_assert(!has_type<S>);
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