1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H 11#define _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H 12 13#include <__config> 14 15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16# pragma GCC system_header 17#endif 18 19_LIBCPP_BEGIN_NAMESPACE_STD 20 21#if _LIBCPP_STD_VER >= 20 22 23struct default_sentinel_t {}; 24inline constexpr default_sentinel_t default_sentinel{}; 25 26#endif // _LIBCPP_STD_VER >= 20 27 28_LIBCPP_END_NAMESPACE_STD 29 30#endif // _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H 31