Remove old code

Signed-off-by: Richard Qin <richard.qin.x@gmail.com>

1 files changed, 0 insertions, 898 deletions

diff --git a/third_party/libcxx/include/c++/v1/ios b/third_party/libcxx/include/c++/v1/ios
deleted file mode 100644
index 9cf0aa8..0000000
--- a/third_party/libcxx/include/c++/v1/ios
+++ /dev/null
@@ -1,898 +0,0 @@
-// -*- 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_IOS
-#define _LIBCPP_IOS
-
-/*
-    ios synopsis
-
-#include <iosfwd>
-
-namespace std
-{
-
-typedef OFF_T streamoff;
-typedef SZ_T streamsize;
-template <class stateT> class fpos;
-
-class ios_base
-{
-public:
-    class failure;
-
-    typedef T1 fmtflags;
-    static constexpr fmtflags boolalpha;
-    static constexpr fmtflags dec;
-    static constexpr fmtflags fixed;
-    static constexpr fmtflags hex;
-    static constexpr fmtflags internal;
-    static constexpr fmtflags left;
-    static constexpr fmtflags oct;
-    static constexpr fmtflags right;
-    static constexpr fmtflags scientific;
-    static constexpr fmtflags showbase;
-    static constexpr fmtflags showpoint;
-    static constexpr fmtflags showpos;
-    static constexpr fmtflags skipws;
-    static constexpr fmtflags unitbuf;
-    static constexpr fmtflags uppercase;
-    static constexpr fmtflags adjustfield;
-    static constexpr fmtflags basefield;
-    static constexpr fmtflags floatfield;
-
-    typedef T2 iostate;
-    static constexpr iostate badbit;
-    static constexpr iostate eofbit;
-    static constexpr iostate failbit;
-    static constexpr iostate goodbit;
-
-    typedef T3 openmode;
-    static constexpr openmode app;
-    static constexpr openmode ate;
-    static constexpr openmode binary;
-    static constexpr openmode in;
-    static constexpr openmode noreplace; // since C++23
-    static constexpr openmode out;
-    static constexpr openmode trunc;
-
-    typedef T4 seekdir;
-    static constexpr seekdir beg;
-    static constexpr seekdir cur;
-    static constexpr seekdir end;
-
-    class Init;
-
-    // 27.5.2.2 fmtflags state:
-    fmtflags flags() const;
-    fmtflags flags(fmtflags fmtfl);
-    fmtflags setf(fmtflags fmtfl);
-    fmtflags setf(fmtflags fmtfl, fmtflags mask);
-    void unsetf(fmtflags mask);
-
-    streamsize precision() const;
-    streamsize precision(streamsize prec);
-    streamsize width() const;
-    streamsize width(streamsize wide);
-
-    // 27.5.2.3 locales:
-    locale imbue(const locale& loc);
-    locale getloc() const;
-
-    // 27.5.2.5 storage:
-    static int xalloc();
-    long& iword(int index);
-    void*& pword(int index);
-
-    // destructor
-    virtual ~ios_base();
-
-    // 27.5.2.6 callbacks;
-    enum event { erase_event, imbue_event, copyfmt_event };
-    typedef void (*event_callback)(event, ios_base&, int index);
-    void register_callback(event_callback fn, int index);
-
-    ios_base(const ios_base&) = delete;
-    ios_base& operator=(const ios_base&) = delete;
-
-    static bool sync_with_stdio(bool sync = true);
-
-protected:
-    ios_base();
-};
-
-template <class charT, class traits = char_traits<charT> >
-class basic_ios
-    : public ios_base
-{
-public:
-    // types:
-    typedef charT char_type;
-    typedef typename traits::int_type int_type;  // removed in C++17
-    typedef typename traits::pos_type pos_type;  // removed in C++17
-    typedef typename traits::off_type off_type;  // removed in C++17
-    typedef traits traits_type;
-
-    operator unspecified-bool-type() const;
-    bool operator!() const;
-    iostate rdstate() const;
-    void clear(iostate state = goodbit);
-    void setstate(iostate state);
-    bool good() const;
-    bool eof() const;
-    bool fail() const;
-    bool bad() const;
-
-    iostate exceptions() const;
-    void exceptions(iostate except);
-
-    // 27.5.4.1 Constructor/destructor:
-    explicit basic_ios(basic_streambuf<charT,traits>* sb);
-    virtual ~basic_ios();
-
-    // 27.5.4.2 Members:
-    basic_ostream<charT,traits>* tie() const;
-    basic_ostream<charT,traits>* tie(basic_ostream<charT,traits>* tiestr);
-
-    basic_streambuf<charT,traits>* rdbuf() const;
-    basic_streambuf<charT,traits>* rdbuf(basic_streambuf<charT,traits>* sb);
-
-    basic_ios& copyfmt(const basic_ios& rhs);
-
-    char_type fill() const;
-    char_type fill(char_type ch);
-
-    locale imbue(const locale& loc);
-
-    char narrow(char_type c, char dfault) const;
-    char_type widen(char c) const;
-
-    basic_ios(const basic_ios& ) = delete;
-    basic_ios& operator=(const basic_ios&) = delete;
-
-protected:
-    basic_ios();
-    void init(basic_streambuf<charT,traits>* sb);
-    void move(basic_ios& rhs);
-    void swap(basic_ios& rhs) noexcept;
-    void set_rdbuf(basic_streambuf<charT, traits>* sb);
-};
-
-// 27.5.5, manipulators:
-ios_base& boolalpha (ios_base& str);
-ios_base& noboolalpha(ios_base& str);
-ios_base& showbase (ios_base& str);
-ios_base& noshowbase (ios_base& str);
-ios_base& showpoint (ios_base& str);
-ios_base& noshowpoint(ios_base& str);
-ios_base& showpos (ios_base& str);
-ios_base& noshowpos (ios_base& str);
-ios_base& skipws (ios_base& str);
-ios_base& noskipws (ios_base& str);
-ios_base& uppercase (ios_base& str);
-ios_base& nouppercase(ios_base& str);
-ios_base& unitbuf (ios_base& str);
-ios_base& nounitbuf (ios_base& str);
-
-// 27.5.5.2 adjustfield:
-ios_base& internal (ios_base& str);
-ios_base& left (ios_base& str);
-ios_base& right (ios_base& str);
-
-// 27.5.5.3 basefield:
-ios_base& dec (ios_base& str);
-ios_base& hex (ios_base& str);
-ios_base& oct (ios_base& str);
-
-// 27.5.5.4 floatfield:
-ios_base& fixed (ios_base& str);
-ios_base& scientific (ios_base& str);
-ios_base& hexfloat (ios_base& str);
-ios_base& defaultfloat(ios_base& str);
-
-// 27.5.5.5 error reporting:
-enum class io_errc
-{
-    stream = 1
-};
-
-concept_map ErrorCodeEnum<io_errc> { };
-error_code make_error_code(io_errc e) noexcept;
-error_condition make_error_condition(io_errc e) noexcept;
-storage-class-specifier const error_category& iostream_category() noexcept;
-
-}  // std
-
-*/
-
-#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-#  include <__cxx03/ios>
-#else
-#  include <__config>
-
-// standard-mandated includes
-
-// [ios.syn]
-#  include <iosfwd>
-
-#  if _LIBCPP_HAS_LOCALIZATION
-
-#    include <__fwd/ios.h>
-#    include <__ios/fpos.h>
-#    include <__locale>
-#    include <__memory/addressof.h>
-#    include <__system_error/error_category.h>
-#    include <__system_error/error_code.h>
-#    include <__system_error/error_condition.h>
-#    include <__system_error/system_error.h>
-#    include <__utility/swap.h>
-#    include <__verbose_abort>
-#    include <version>
-
-#    if _LIBCPP_HAS_ATOMIC_HEADER
-#      include <__atomic/atomic.h> // for __xindex_
-#    endif
-
-#    if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#      pragma GCC system_header
-#    endif
-
-_LIBCPP_PUSH_MACROS
-#    include <__undef_macros>
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-typedef ptrdiff_t streamsize;
-
-class _LIBCPP_EXPORTED_FROM_ABI ios_base {
-public:
-  class _LIBCPP_EXPORTED_FROM_ABI failure;
-
-  typedef unsigned int fmtflags;
-  static const fmtflags boolalpha   = 0x0001;
-  static const fmtflags dec         = 0x0002;
-  static const fmtflags fixed       = 0x0004;
-  static const fmtflags hex         = 0x0008;
-  static const fmtflags internal    = 0x0010;
-  static const fmtflags left        = 0x0020;
-  static const fmtflags oct         = 0x0040;
-  static const fmtflags right       = 0x0080;
-  static const fmtflags scientific  = 0x0100;
-  static const fmtflags showbase    = 0x0200;
-  static const fmtflags showpoint   = 0x0400;
-  static const fmtflags showpos     = 0x0800;
-  static const fmtflags skipws      = 0x1000;
-  static const fmtflags unitbuf     = 0x2000;
-  static const fmtflags uppercase   = 0x4000;
-  static const fmtflags adjustfield = left | right | internal;
-  static const fmtflags basefield   = dec | oct | hex;
-  static const fmtflags floatfield  = scientific | fixed;
-
-  typedef unsigned int iostate;
-  static const iostate badbit  = 0x1;
-  static const iostate eofbit  = 0x2;
-  static const iostate failbit = 0x4;
-  static const iostate goodbit = 0x0;
-
-  typedef unsigned int openmode;
-  static const openmode app    = 0x01;
-  static const openmode ate    = 0x02;
-  static const openmode binary = 0x04;
-  static const openmode in     = 0x08;
-  static const openmode out    = 0x10;
-  static const openmode trunc  = 0x20;
-#    if _LIBCPP_STD_VER >= 23
-  static const openmode noreplace = 0x40;
-#    endif
-
-  enum seekdir { beg, cur, end };
-
-#    if _LIBCPP_STD_VER <= 14
-  typedef iostate io_state;
-  typedef openmode open_mode;
-  typedef seekdir seek_dir;
-
-  typedef std::streamoff streamoff;
-  typedef std::streampos streampos;
-#    endif
-
-  class _LIBCPP_EXPORTED_FROM_ABI Init;
-
-  // 27.5.2.2 fmtflags state:
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI fmtflags flags() const;
-  _LIBCPP_HIDE_FROM_ABI fmtflags flags(fmtflags __fmtfl);
-  _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl);
-  _LIBCPP_HIDE_FROM_ABI fmtflags setf(fmtflags __fmtfl, fmtflags __mask);
-  _LIBCPP_HIDE_FROM_ABI void unsetf(fmtflags __mask);
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI streamsize precision() const;
-  _LIBCPP_HIDE_FROM_ABI streamsize precision(streamsize __prec);
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI streamsize width() const;
-  _LIBCPP_HIDE_FROM_ABI streamsize width(streamsize __wide);
-
-  // 27.5.2.3 locales:
-  locale imbue(const locale& __loc);
-  [[__nodiscard__]] locale getloc() const;
-
-  // 27.5.2.5 storage:
-  [[__nodiscard__]] static int xalloc();
-  [[__nodiscard__]] long& iword(int __index);
-  [[__nodiscard__]] void*& pword(int __index);
-
-  // destructor
-  virtual ~ios_base();
-
-  // 27.5.2.6 callbacks;
-  enum event { erase_event, imbue_event, copyfmt_event };
-  typedef void (*event_callback)(event, ios_base&, int __index);
-  void register_callback(event_callback __fn, int __index);
-
-  ios_base(const ios_base&)            = delete;
-  ios_base& operator=(const ios_base&) = delete;
-
-  static bool sync_with_stdio(bool __sync = true);
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate rdstate() const;
-  void clear(iostate __state = goodbit);
-  _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state);
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool good() const;
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool eof() const;
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool fail() const;
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool bad() const;
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate exceptions() const;
-  _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate);
-
-  void __set_badbit_and_consider_rethrow();
-  void __set_failbit_and_consider_rethrow();
-
-  _LIBCPP_HIDE_FROM_ABI void __setstate_nothrow(iostate __state) {
-    if (__rdbuf_)
-      __rdstate_ |= __state;
-    else
-      __rdstate_ |= __state | ios_base::badbit;
-  }
-
-protected:
-  _LIBCPP_HIDE_FROM_ABI ios_base() : __loc_(nullptr) {
-    // Purposefully does no initialization
-    //
-    // Except for the locale, this is a sentinel to avoid destroying
-    // an uninitialized object. See
-    // test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp
-    // for the details.
-  }
-
-  void init(void* __sb);
-  _LIBCPP_HIDE_FROM_ABI void* rdbuf() const { return __rdbuf_; }
-
-  _LIBCPP_HIDE_FROM_ABI void rdbuf(void* __sb) {
-    __rdbuf_ = __sb;
-    clear();
-  }
-
-  void __call_callbacks(event);
-  void copyfmt(const ios_base&);
-  void move(ios_base&);
-  void swap(ios_base&) _NOEXCEPT;
-
-  _LIBCPP_HIDE_FROM_ABI void set_rdbuf(void* __sb) { __rdbuf_ = __sb; }
-
-private:
-  // All data members must be scalars
-  fmtflags __fmtflags_;
-  streamsize __precision_;
-  streamsize __width_;
-  iostate __rdstate_;
-  iostate __exceptions_;
-  void* __rdbuf_;
-  void* __loc_;
-  event_callback* __fn_;
-  int* __index_;
-  size_t __event_size_;
-  size_t __event_cap_;
-// TODO(EricWF): Enable this for both Clang and GCC. Currently it is only
-// enabled with clang.
-#    if _LIBCPP_HAS_C_ATOMIC_IMP && _LIBCPP_HAS_THREADS
-  static atomic<int> __xindex_;
-#    else
-  static int __xindex_;
-#    endif
-  long* __iarray_;
-  size_t __iarray_size_;
-  size_t __iarray_cap_;
-  void** __parray_;
-  size_t __parray_size_;
-  size_t __parray_cap_;
-};
-
-// enum class io_errc
-_LIBCPP_DECLARE_STRONG_ENUM(io_errc){stream = 1};
-_LIBCPP_DECLARE_STRONG_ENUM_EPILOG(io_errc)
-
-template <>
-struct is_error_code_enum<io_errc> : public true_type {};
-
-#    ifdef _LIBCPP_CXX03_LANG
-template <>
-struct is_error_code_enum<io_errc::__lx> : public true_type {};
-#    endif
-
-[[__nodiscard__]] _LIBCPP_EXPORTED_FROM_ABI const error_category& iostream_category() _NOEXCEPT;
-
-[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI error_code make_error_code(io_errc __e) _NOEXCEPT {
-  return error_code(static_cast<int>(__e), iostream_category());
-}
-
-[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(io_errc __e) _NOEXCEPT {
-  return error_condition(static_cast<int>(__e), iostream_category());
-}
-
-class _LIBCPP_EXPORTED_FROM_ABI ios_base::failure : public system_error {
-public:
-  explicit failure(const string& __msg, const error_code& __ec = io_errc::stream);
-  explicit failure(const char* __msg, const error_code& __ec = io_errc::stream);
-  _LIBCPP_HIDE_FROM_ABI failure(const failure&) _NOEXCEPT = default;
-  ~failure() _NOEXCEPT override;
-};
-
-[[__noreturn__]] inline _LIBCPP_HIDE_FROM_ABI void __throw_failure(char const* __msg) {
-#    if _LIBCPP_HAS_EXCEPTIONS
-  throw ios_base::failure(__msg);
-#    else
-  _LIBCPP_VERBOSE_ABORT("ios_base::failure was thrown in -fno-exceptions mode with message \"%s\"", __msg);
-#    endif
-}
-
-class _LIBCPP_EXPORTED_FROM_ABI ios_base::Init {
-public:
-  Init();
-  ~Init();
-};
-
-// fmtflags
-
-inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags() const { return __fmtflags_; }
-
-inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::flags(fmtflags __fmtfl) {
-  fmtflags __r = __fmtflags_;
-  __fmtflags_  = __fmtfl;
-  return __r;
-}
-
-inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl) {
-  fmtflags __r = __fmtflags_;
-  __fmtflags_ |= __fmtfl;
-  return __r;
-}
-
-inline _LIBCPP_HIDE_FROM_ABI void ios_base::unsetf(fmtflags __mask) { __fmtflags_ &= ~__mask; }
-
-inline _LIBCPP_HIDE_FROM_ABI ios_base::fmtflags ios_base::setf(fmtflags __fmtfl, fmtflags __mask) {
-  fmtflags __r = __fmtflags_;
-  unsetf(__mask);
-  __fmtflags_ |= __fmtfl & __mask;
-  return __r;
-}
-
-// precision
-
-inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision() const { return __precision_; }
-
-inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::precision(streamsize __prec) {
-  streamsize __r = __precision_;
-  __precision_   = __prec;
-  return __r;
-}
-
-// width
-
-inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width() const { return __width_; }
-
-inline _LIBCPP_HIDE_FROM_ABI streamsize ios_base::width(streamsize __wide) {
-  streamsize __r = __width_;
-  __width_       = __wide;
-  return __r;
-}
-
-// iostate
-
-inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::rdstate() const { return __rdstate_; }
-
-inline _LIBCPP_HIDE_FROM_ABI void ios_base::setstate(iostate __state) { clear(__rdstate_ | __state); }
-
-inline _LIBCPP_HIDE_FROM_ABI bool ios_base::good() const { return __rdstate_ == 0; }
-
-inline _LIBCPP_HIDE_FROM_ABI bool ios_base::eof() const { return (__rdstate_ & eofbit) != 0; }
-
-inline _LIBCPP_HIDE_FROM_ABI bool ios_base::fail() const { return (__rdstate_ & (failbit | badbit)) != 0; }
-
-inline _LIBCPP_HIDE_FROM_ABI bool ios_base::bad() const { return (__rdstate_ & badbit) != 0; }
-
-inline _LIBCPP_HIDE_FROM_ABI ios_base::iostate ios_base::exceptions() const { return __exceptions_; }
-
-inline _LIBCPP_HIDE_FROM_ABI void ios_base::exceptions(iostate __iostate) {
-  __exceptions_ = __iostate;
-  clear(__rdstate_);
-}
-
-template <class _Traits>
-// Attribute 'packed' is used to keep the layout compatible with the previous
-// definition of the '__fill_' and '_set_' pair in basic_ios on AIX & z/OS.
-struct _LIBCPP_PACKED _FillHelper {
-  _LIBCPP_HIDE_FROM_ABI void __init() {
-    __set_      = false;
-    __fill_val_ = _Traits::eof();
-  }
-  _LIBCPP_HIDE_FROM_ABI _FillHelper& operator=(typename _Traits::int_type __x) {
-    __set_      = true;
-    __fill_val_ = __x;
-    return *this;
-  }
-  _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __set_; }
-  _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
-
-private:
-  typename _Traits::int_type __fill_val_;
-  bool __set_;
-};
-
-template <class _Traits>
-struct _LIBCPP_PACKED _SentinelValueFill {
-  _LIBCPP_HIDE_FROM_ABI void __init() { __fill_val_ = _Traits::eof(); }
-  _LIBCPP_HIDE_FROM_ABI _SentinelValueFill& operator=(typename _Traits::int_type __x) {
-    __fill_val_ = __x;
-    return *this;
-  }
-  _LIBCPP_HIDE_FROM_ABI bool __is_set() const { return __fill_val_ != _Traits::eof(); }
-  _LIBCPP_HIDE_FROM_ABI typename _Traits::int_type __get() const { return __fill_val_; }
-
-private:
-  typename _Traits::int_type __fill_val_;
-};
-
-template <class _CharT, class _Traits>
-class basic_ios : public ios_base {
-public:
-  // types:
-  typedef _CharT char_type;
-  typedef _Traits traits_type;
-
-  typedef typename traits_type::int_type int_type;
-  typedef typename traits_type::pos_type pos_type;
-  typedef typename traits_type::off_type off_type;
-
-  static_assert(is_same<_CharT, typename traits_type::char_type>::value,
-                "traits_type::char_type must be the same type as CharT");
-
-#    ifdef _LIBCPP_CXX03_LANG
-  // Preserve the ability to compare with literal 0,
-  // and implicitly convert to bool, but not implicitly convert to int.
-  _LIBCPP_HIDE_FROM_ABI operator void*() const { return fail() ? nullptr : (void*)this; }
-#    else
-  _LIBCPP_HIDE_FROM_ABI explicit operator bool() const { return !fail(); }
-#    endif
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool operator!() const { return fail(); }
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate rdstate() const { return ios_base::rdstate(); }
-  _LIBCPP_HIDE_FROM_ABI void clear(iostate __state = goodbit) { ios_base::clear(__state); }
-  _LIBCPP_HIDE_FROM_ABI void setstate(iostate __state) { ios_base::setstate(__state); }
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool good() const { return ios_base::good(); }
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool eof() const { return ios_base::eof(); }
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool fail() const { return ios_base::fail(); }
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool bad() const { return ios_base::bad(); }
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI iostate exceptions() const { return ios_base::exceptions(); }
-  _LIBCPP_HIDE_FROM_ABI void exceptions(iostate __iostate) { ios_base::exceptions(__iostate); }
-
-  // 27.5.4.1 Constructor/destructor:
-  _LIBCPP_HIDE_FROM_ABI explicit basic_ios(basic_streambuf<char_type, traits_type>* __sb);
-  ~basic_ios() override;
-
-  // 27.5.4.2 Members:
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie() const;
-  _LIBCPP_HIDE_FROM_ABI basic_ostream<char_type, traits_type>* tie(basic_ostream<char_type, traits_type>* __tiestr);
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf() const;
-  _LIBCPP_HIDE_FROM_ABI basic_streambuf<char_type, traits_type>* rdbuf(basic_streambuf<char_type, traits_type>* __sb);
-
-  basic_ios& copyfmt(const basic_ios& __rhs);
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI char_type fill() const;
-  _LIBCPP_HIDE_FROM_ABI char_type fill(char_type __ch);
-
-  _LIBCPP_HIDE_FROM_ABI locale imbue(const locale& __loc);
-
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI char narrow(char_type __c, char __dfault) const;
-  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI char_type widen(char __c) const;
-
-protected:
-  _LIBCPP_HIDE_FROM_ABI basic_ios() {
-    // purposefully does no initialization
-    // since the destructor does nothing this does not have ios_base issues.
-  }
-  _LIBCPP_HIDE_FROM_ABI void init(basic_streambuf<char_type, traits_type>* __sb);
-
-  _LIBCPP_HIDE_FROM_ABI void move(basic_ios& __rhs);
-  _LIBCPP_HIDE_FROM_ABI void move(basic_ios&& __rhs) { move(__rhs); }
-  _LIBCPP_HIDE_FROM_ABI void swap(basic_ios& __rhs) _NOEXCEPT;
-  _LIBCPP_HIDE_FROM_ABI void set_rdbuf(basic_streambuf<char_type, traits_type>* __sb);
-
-private:
-  basic_ostream<char_type, traits_type>* __tie_;
-
-#    if defined(_LIBCPP_ABI_IOS_ALLOW_ARBITRARY_FILL_VALUE)
-  using _FillType _LIBCPP_NODEBUG = _FillHelper<traits_type>;
-#    else
-  using _FillType _LIBCPP_NODEBUG = _SentinelValueFill<traits_type>;
-#    endif
-  mutable _FillType __fill_;
-};
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI basic_ios<_CharT, _Traits>::basic_ios(basic_streambuf<char_type, traits_type>* __sb) {
-  init(__sb);
-}
-
-template <class _CharT, class _Traits>
-basic_ios<_CharT, _Traits>::~basic_ios() {}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::init(basic_streambuf<char_type, traits_type>* __sb) {
-  ios_base::init(__sb);
-  __tie_ = nullptr;
-  __fill_.__init();
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>* basic_ios<_CharT, _Traits>::tie() const {
-  return __tie_;
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI basic_ostream<_CharT, _Traits>*
-basic_ios<_CharT, _Traits>::tie(basic_ostream<char_type, traits_type>* __tiestr) {
-  basic_ostream<char_type, traits_type>* __r = __tie_;
-  __tie_                                     = __tiestr;
-  return __r;
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>* basic_ios<_CharT, _Traits>::rdbuf() const {
-  return static_cast<basic_streambuf<char_type, traits_type>*>(ios_base::rdbuf());
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI basic_streambuf<_CharT, _Traits>*
-basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
-  basic_streambuf<char_type, traits_type>* __r = rdbuf();
-  ios_base::rdbuf(__sb);
-  return __r;
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI locale basic_ios<_CharT, _Traits>::imbue(const locale& __loc) {
-  locale __r = getloc();
-  ios_base::imbue(__loc);
-  if (rdbuf())
-    rdbuf()->pubimbue(__loc);
-  return __r;
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI char basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const {
-  return std::use_facet<ctype<char_type> >(getloc()).narrow(__c, __dfault);
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::widen(char __c) const {
-  return std::use_facet<ctype<char_type> >(getloc()).widen(__c);
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill() const {
-  if (!__fill_.__is_set())
-    __fill_ = widen(' ');
-  return __fill_.__get();
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI _CharT basic_ios<_CharT, _Traits>::fill(char_type __ch) {
-  if (!__fill_.__is_set())
-    __fill_ = widen(' ');
-  char_type __r = __fill_.__get();
-  __fill_       = __ch;
-  return __r;
-}
-
-template <class _CharT, class _Traits>
-basic_ios<_CharT, _Traits>& basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) {
-  if (this != std::addressof(__rhs)) {
-    __call_callbacks(erase_event);
-    ios_base::copyfmt(__rhs);
-    __tie_  = __rhs.__tie_;
-    __fill_ = __rhs.__fill_;
-    __call_callbacks(copyfmt_event);
-    exceptions(__rhs.exceptions());
-  }
-  return *this;
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::move(basic_ios& __rhs) {
-  ios_base::move(__rhs);
-  __tie_       = __rhs.__tie_;
-  __rhs.__tie_ = nullptr;
-  __fill_      = __rhs.__fill_;
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::swap(basic_ios& __rhs) _NOEXCEPT {
-  ios_base::swap(__rhs);
-  std::swap(__tie_, __rhs.__tie_);
-  std::swap(__fill_, __rhs.__fill_);
-}
-
-template <class _CharT, class _Traits>
-inline _LIBCPP_HIDE_FROM_ABI void basic_ios<_CharT, _Traits>::set_rdbuf(basic_streambuf<char_type, traits_type>* __sb) {
-  ios_base::set_rdbuf(__sb);
-}
-
-extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>;
-
-#    if _LIBCPP_HAS_WIDE_CHARACTERS
-extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>;
-#    endif
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& boolalpha(ios_base& __str) {
-  __str.setf(ios_base::boolalpha);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& noboolalpha(ios_base& __str) {
-  __str.unsetf(ios_base::boolalpha);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& showbase(ios_base& __str) {
-  __str.setf(ios_base::showbase);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowbase(ios_base& __str) {
-  __str.unsetf(ios_base::showbase);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& showpoint(ios_base& __str) {
-  __str.setf(ios_base::showpoint);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpoint(ios_base& __str) {
-  __str.unsetf(ios_base::showpoint);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& showpos(ios_base& __str) {
-  __str.setf(ios_base::showpos);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& noshowpos(ios_base& __str) {
-  __str.unsetf(ios_base::showpos);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& skipws(ios_base& __str) {
-  __str.setf(ios_base::skipws);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& noskipws(ios_base& __str) {
-  __str.unsetf(ios_base::skipws);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& uppercase(ios_base& __str) {
-  __str.setf(ios_base::uppercase);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& nouppercase(ios_base& __str) {
-  __str.unsetf(ios_base::uppercase);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& unitbuf(ios_base& __str) {
-  __str.setf(ios_base::unitbuf);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& nounitbuf(ios_base& __str) {
-  __str.unsetf(ios_base::unitbuf);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& internal(ios_base& __str) {
-  __str.setf(ios_base::internal, ios_base::adjustfield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& left(ios_base& __str) {
-  __str.setf(ios_base::left, ios_base::adjustfield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& right(ios_base& __str) {
-  __str.setf(ios_base::right, ios_base::adjustfield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& dec(ios_base& __str) {
-  __str.setf(ios_base::dec, ios_base::basefield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& hex(ios_base& __str) {
-  __str.setf(ios_base::hex, ios_base::basefield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& oct(ios_base& __str) {
-  __str.setf(ios_base::oct, ios_base::basefield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& fixed(ios_base& __str) {
-  __str.setf(ios_base::fixed, ios_base::floatfield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& scientific(ios_base& __str) {
-  __str.setf(ios_base::scientific, ios_base::floatfield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& hexfloat(ios_base& __str) {
-  __str.setf(ios_base::fixed | ios_base::scientific, ios_base::floatfield);
-  return __str;
-}
-
-_LIBCPP_HIDE_FROM_ABI inline ios_base& defaultfloat(ios_base& __str) {
-  __str.unsetf(ios_base::floatfield);
-  return __str;
-}
-
-_LIBCPP_END_NAMESPACE_STD
-
-_LIBCPP_POP_MACROS
-
-#  endif // _LIBCPP_HAS_LOCALIZATION
-
-#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
-#    include <atomic>
-#    include <concepts>
-#    include <cstddef>
-#    include <cstdlib>
-#    include <cstring>
-#    include <initializer_list>
-#    include <limits>
-#    include <mutex>
-#    include <new>
-#    include <optional>
-#    include <stdexcept>
-#    include <system_error>
-#    include <type_traits>
-#    include <typeinfo>
-#  endif
-#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
-
-#endif // _LIBCPP_IOS