intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 30 insertions, 0 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/__iterator/default_sentinel.h b/contrib/libs/cxxsupp/libcxx/include/__iterator/default_sentinel.h
new file mode 100644
index 00000000000..7172a748feb
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__iterator/default_sentinel.h
@@ -0,0 +1,30 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H
+#define _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H
+
+#include <__config>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if !defined(_LIBCPP_HAS_NO_RANGES)
+
+struct default_sentinel_t { };
+inline constexpr default_sentinel_t default_sentinel{};
+
+#endif // !defined(_LIBCPP_HAS_NO_RANGES)
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___ITERATOR_DEFAULT_SENTINEL_H