forked from OSchip/llvm-project
39 lines
1.1 KiB
C++
39 lines
1.1 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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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#ifndef _LIBCPP___ITERATOR_UNREACHABLE_SENTINEL_H
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#define _LIBCPP___ITERATOR_UNREACHABLE_SENTINEL_H
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#include <__config>
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#include <__iterator/concepts.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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#pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if !defined(_LIBCPP_HAS_NO_RANGES)
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struct unreachable_sentinel_t {
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template<weakly_incrementable _Iter>
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_LIBCPP_HIDE_FROM_ABI
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friend constexpr bool operator==(unreachable_sentinel_t, const _Iter&) noexcept {
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return false;
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}
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};
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inline constexpr unreachable_sentinel_t unreachable_sentinel{};
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#endif // !defined(_LIBCPP_HAS_NO_RANGES)
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ITERATOR_UNREACHABLE_SENTINEL_H
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