Update libcxx to llvmorg-17.0.6

Update libcxx to llvmorg-17.0.6
c871ef572c71b4fef22d4a9e65bcebc57e625aea

10 files changed, 275 insertions, 10 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/fstream.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/fstream.h
new file mode 100644
index 0000000000..b4a112bfd4
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/fstream.h
@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___FWD_FSTREAM_H
+#define _LIBCPP___FWD_FSTREAM_H
+
+#include <__config>
+#include <__fwd/string.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_filebuf;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_ifstream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_ofstream;
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_fstream;
+
+using filebuf  = basic_filebuf<char>;
+using ifstream = basic_ifstream<char>;
+using ofstream = basic_ofstream<char>;
+using fstream  = basic_fstream<char>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+using wfilebuf  = basic_filebuf<wchar_t>;
+using wifstream = basic_ifstream<wchar_t>;
+using wofstream = basic_ofstream<wchar_t>;
+using wfstream  = basic_fstream<wchar_t>;
+#endif
+
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(filebuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wfilebuf)) basic_filebuf;
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(ifstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wifstream)) basic_ifstream;
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(ofstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wofstream)) basic_ofstream;
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(fstream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wfstream)) basic_fstream;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FWD_FSTREAM_H
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/get.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/get.h
index ec1fab4602..d04341496c 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__fwd/get.h
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/get.h
@@ -15,7 +15,7 @@
 #include <__fwd/pair.h>
 #include <__fwd/subrange.h>
 #include <__fwd/tuple.h>
-#include <__tuple_dir/tuple_element.h>
+#include <__tuple/tuple_element.h>
 #include <cstddef>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/ios.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/ios.h
new file mode 100644
index 0000000000..82c865d58c
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/ios.h
@@ -0,0 +1,41 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___FWD_IOS_H
+#define _LIBCPP___FWD_IOS_H
+
+#include <__config>
+#include <__fwd/string.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_ios;
+
+using ios = basic_ios<char>;
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+using wios = basic_ios<wchar_t>;
+#endif
+
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(ios) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wios)) basic_ios;
+
+#if defined(_NEWLIB_VERSION)
+// On newlib, off_t is 'long int'
+using streamoff = long int; // for char_traits in <string>
+#else
+using streamoff = long long; // for char_traits in <string>
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FWD_IOS_H
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/istream.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/istream.h
new file mode 100644
index 0000000000..a06907a6c8
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/istream.h
@@ -0,0 +1,43 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___FWD_ISTREAM_H
+#define _LIBCPP___FWD_ISTREAM_H
+
+#include <__config>
+#include <__fwd/string.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_istream;
+
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_iostream;
+
+using istream  = basic_istream<char>;
+using iostream = basic_iostream<char>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+using wistream  = basic_istream<wchar_t>;
+using wiostream = basic_iostream<wchar_t>;
+#endif
+
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(istream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistream)) basic_istream;
+
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(iostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wiostream)) basic_iostream;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FWD_ISTREAM_H
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/memory_resource.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/memory_resource.h
index 718a9078d3..03b78ad2bd 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__fwd/memory_resource.h
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/memory_resource.h
@@ -9,6 +9,7 @@
 #ifndef _LIBCPP___FWD_MEMORY_RESOURCE_H
 #define _LIBCPP___FWD_MEMORY_RESOURCE_H
 
+#include <__availability>
 #include <__config>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
@@ -19,7 +20,7 @@ _LIBCPP_BEGIN_NAMESPACE_STD
 
 namespace pmr {
 template <class _ValueType>
-class _LIBCPP_TEMPLATE_VIS polymorphic_allocator;
+class _LIBCPP_AVAILABILITY_PMR _LIBCPP_TEMPLATE_VIS polymorphic_allocator;
 } // namespace pmr
 
 _LIBCPP_END_NAMESPACE_STD
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/ostream.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/ostream.h
new file mode 100644
index 0000000000..3347e0f71d
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/ostream.h
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___FWD_OSTREAM_H
+#define _LIBCPP___FWD_OSTREAM_H
+
+#include <__config>
+#include <__fwd/string.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_ostream;
+
+using ostream = basic_ostream<char>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+using wostream = basic_ostream<wchar_t>;
+#endif
+
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(ostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wostream)) basic_ostream;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FWD_OSTREAM_H
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/span.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/span.h
index 943cb13fa1..e9fa70382f 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__fwd/span.h
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/span.h
@@ -23,7 +23,7 @@ _LIBCPP_PUSH_MACROS
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-#if _LIBCPP_STD_VER > 17
+#if _LIBCPP_STD_VER >= 20
 
 inline constexpr size_t dynamic_extent = numeric_limits<size_t>::max();
 template <typename _Tp, size_t _Extent = dynamic_extent> class span;
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/sstream.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/sstream.h
new file mode 100644
index 0000000000..e2d46fbe1d
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/sstream.h
@@ -0,0 +1,57 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___FWD_SSTREAM_H
+#define _LIBCPP___FWD_SSTREAM_H
+
+#include <__config>
+#include <__fwd/string.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _CharT, class _Traits = char_traits<_CharT>, class _Allocator = allocator<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_stringbuf;
+
+template <class _CharT, class _Traits = char_traits<_CharT>, class _Allocator = allocator<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_istringstream;
+template <class _CharT, class _Traits = char_traits<_CharT>, class _Allocator = allocator<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_ostringstream;
+template <class _CharT, class _Traits = char_traits<_CharT>, class _Allocator = allocator<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_stringstream;
+
+using stringbuf     = basic_stringbuf<char>;
+using istringstream = basic_istringstream<char>;
+using ostringstream = basic_ostringstream<char>;
+using stringstream  = basic_stringstream<char>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+using wstringbuf     = basic_stringbuf<wchar_t>;
+using wistringstream = basic_istringstream<wchar_t>;
+using wostringstream = basic_ostringstream<wchar_t>;
+using wstringstream  = basic_stringstream<wchar_t>;
+#endif
+
+template <class _CharT, class _Traits, class _Allocator>
+class _LIBCPP_PREFERRED_NAME(stringbuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstringbuf)) basic_stringbuf;
+template <class _CharT, class _Traits, class _Allocator>
+class _LIBCPP_PREFERRED_NAME(istringstream)
+    _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistringstream)) basic_istringstream;
+template <class _CharT, class _Traits, class _Allocator>
+class _LIBCPP_PREFERRED_NAME(ostringstream)
+    _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wostringstream)) basic_ostringstream;
+template <class _CharT, class _Traits, class _Allocator>
+class _LIBCPP_PREFERRED_NAME(stringstream)
+    _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstringstream)) basic_stringstream;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FWD_SSTREAM_H
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/streambuf.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/streambuf.h
new file mode 100644
index 0000000000..b35afa6afe
--- /dev/null
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/streambuf.h
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// 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___FWD_STREAMBUF_H
+#define _LIBCPP___FWD_STREAMBUF_H
+
+#include <__config>
+#include <__fwd/string.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _CharT, class _Traits = char_traits<_CharT> >
+class _LIBCPP_TEMPLATE_VIS basic_streambuf;
+
+using streambuf = basic_streambuf<char>;
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+using wstreambuf = basic_streambuf<wchar_t>;
+#endif
+
+template <class _CharT, class _Traits>
+class _LIBCPP_PREFERRED_NAME(streambuf) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wstreambuf)) basic_streambuf;
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___FWD_STREAMBUF_H
diff --git a/contrib/libs/cxxsupp/libcxx/include/__fwd/string.h b/contrib/libs/cxxsupp/libcxx/include/__fwd/string.h
index 7ab5561b75..032132374d 100644
--- a/contrib/libs/cxxsupp/libcxx/include/__fwd/string.h
+++ b/contrib/libs/cxxsupp/libcxx/include/__fwd/string.h
@@ -9,6 +9,7 @@
 #ifndef _LIBCPP___FWD_STRING_H
 #define _LIBCPP___FWD_STRING_H
 
+#include <__availability>
 #include <__config>
 #include <__fwd/memory_resource.h>
 
@@ -61,21 +62,20 @@ using u32string = basic_string<char32_t>;
 
 namespace pmr {
 template <class _CharT, class _Traits = char_traits<_CharT>>
-using basic_string = std::basic_string<_CharT, _Traits, polymorphic_allocator<_CharT>>;
+using basic_string _LIBCPP_AVAILABILITY_PMR = std::basic_string<_CharT, _Traits, polymorphic_allocator<_CharT>>;
 
-using string = basic_string<char>;
+using string _LIBCPP_AVAILABILITY_PMR = basic_string<char>;
 
 #  ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
-using wstring = basic_string<wchar_t>;
+using wstring _LIBCPP_AVAILABILITY_PMR = basic_string<wchar_t>;
 #  endif
 
 #  ifndef _LIBCPP_HAS_NO_CHAR8_T
-using u8string = basic_string<char8_t>;
+using u8string _LIBCPP_AVAILABILITY_PMR = basic_string<char8_t>;
 #  endif
 
-using u16string = basic_string<char16_t>;
-using u32string = basic_string<char32_t>;
-
+using u16string _LIBCPP_AVAILABILITY_PMR = basic_string<char16_t>;
+using u32string _LIBCPP_AVAILABILITY_PMR = basic_string<char32_t>;
 } // namespace pmr
 
 #endif // _LIBCPP_STD_VER >= 17