Restoring authorship annotation for Andrey Khalyavin <halyavin@gmail.com>. Commit 1 of 2.

1 files changed, 476 insertions, 476 deletions

diff --git a/contrib/libs/cxxsupp/libcxx/include/streambuf b/contrib/libs/cxxsupp/libcxx/include/streambuf
index 385d486945..d510b0f3d3 100644
--- a/contrib/libs/cxxsupp/libcxx/include/streambuf
+++ b/contrib/libs/cxxsupp/libcxx/include/streambuf
@@ -1,498 +1,498 @@
-// -*- C++ -*-
-//===------------------------- streambuf ----------------------------------===//
-//
+// -*- C++ -*- 
+//===------------------------- streambuf ----------------------------------===// 
+// 
 // 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_STREAMBUF
-#define _LIBCPP_STREAMBUF
-
-/*
-    streambuf synopsis
-
-namespace std
-{
-
-template <class charT, class traits = char_traits<charT> >
-class basic_streambuf
-{
-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;
-
-    virtual ~basic_streambuf();
-
-    // 27.6.2.2.1 locales:
-    locale pubimbue(const locale& loc);
-    locale getloc() const;
-
-    // 27.6.2.2.2 buffer and positioning:
-    basic_streambuf* pubsetbuf(char_type* s, streamsize n);
-    pos_type pubseekoff(off_type off, ios_base::seekdir way,
-                        ios_base::openmode which = ios_base::in | ios_base::out);
-    pos_type pubseekpos(pos_type sp,
-                        ios_base::openmode which = ios_base::in | ios_base::out);
-    int pubsync();
-
-    // Get and put areas:
-    // 27.6.2.2.3 Get area:
-    streamsize in_avail();
-    int_type snextc();
-    int_type sbumpc();
-    int_type sgetc();
-    streamsize sgetn(char_type* s, streamsize n);
-
-    // 27.6.2.2.4 Putback:
-    int_type sputbackc(char_type c);
-    int_type sungetc();
-
-    // 27.6.2.2.5 Put area:
-    int_type sputc(char_type c);
-    streamsize sputn(const char_type* s, streamsize n);
-
-protected:
-    basic_streambuf();
-    basic_streambuf(const basic_streambuf& rhs);
-    basic_streambuf& operator=(const basic_streambuf& rhs);
-    void swap(basic_streambuf& rhs);
-
-    // 27.6.2.3.2 Get area:
-    char_type* eback() const;
-    char_type* gptr() const;
-    char_type* egptr() const;
-    void gbump(int n);
-    void setg(char_type* gbeg, char_type* gnext, char_type* gend);
-
-    // 27.6.2.3.3 Put area:
-    char_type* pbase() const;
-    char_type* pptr() const;
-    char_type* epptr() const;
-    void pbump(int n);
-    void setp(char_type* pbeg, char_type* pend);
-
-    // 27.6.2.4 virtual functions:
-    // 27.6.2.4.1 Locales:
-    virtual void imbue(const locale& loc);
-
-    // 27.6.2.4.2 Buffer management and positioning:
-    virtual basic_streambuf* setbuf(char_type* s, streamsize n);
-    virtual pos_type seekoff(off_type off, ios_base::seekdir way,
-                             ios_base::openmode which = ios_base::in | ios_base::out);
-    virtual pos_type seekpos(pos_type sp,
-                             ios_base::openmode which = ios_base::in | ios_base::out);
-    virtual int sync();
-
-    // 27.6.2.4.3 Get area:
-    virtual streamsize showmanyc();
-    virtual streamsize xsgetn(char_type* s, streamsize n);
-    virtual int_type underflow();
-    virtual int_type uflow();
-
-    // 27.6.2.4.4 Putback:
-    virtual int_type pbackfail(int_type c = traits_type::eof());
-
-    // 27.6.2.4.5 Put area:
-    virtual streamsize xsputn(const char_type* s, streamsize n);
-    virtual int_type overflow (int_type c = traits_type::eof());
-};
-
-}  // std
-
-*/
-
-#include <__config>
-#include <ios>
-#include <iosfwd>
-
-#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
-#pragma GCC system_header
-#endif
-
-_LIBCPP_PUSH_MACROS
-#include <__undef_macros>
-
-_LIBCPP_BEGIN_NAMESPACE_STD
-
-template <class _CharT, class _Traits>
-class _LIBCPP_TEMPLATE_VIS basic_streambuf
-{
-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");
-
-    virtual ~basic_streambuf();
-
-    // 27.6.2.2.1 locales:
+// 
+//===----------------------------------------------------------------------===// 
+ 
+#ifndef _LIBCPP_STREAMBUF 
+#define _LIBCPP_STREAMBUF 
+ 
+/* 
+    streambuf synopsis 
+ 
+namespace std 
+{ 
+ 
+template <class charT, class traits = char_traits<charT> > 
+class basic_streambuf 
+{ 
+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; 
+ 
+    virtual ~basic_streambuf(); 
+ 
+    // 27.6.2.2.1 locales: 
+    locale pubimbue(const locale& loc); 
+    locale getloc() const; 
+ 
+    // 27.6.2.2.2 buffer and positioning: 
+    basic_streambuf* pubsetbuf(char_type* s, streamsize n); 
+    pos_type pubseekoff(off_type off, ios_base::seekdir way, 
+                        ios_base::openmode which = ios_base::in | ios_base::out); 
+    pos_type pubseekpos(pos_type sp, 
+                        ios_base::openmode which = ios_base::in | ios_base::out); 
+    int pubsync(); 
+ 
+    // Get and put areas: 
+    // 27.6.2.2.3 Get area: 
+    streamsize in_avail(); 
+    int_type snextc(); 
+    int_type sbumpc(); 
+    int_type sgetc(); 
+    streamsize sgetn(char_type* s, streamsize n); 
+ 
+    // 27.6.2.2.4 Putback: 
+    int_type sputbackc(char_type c); 
+    int_type sungetc(); 
+ 
+    // 27.6.2.2.5 Put area: 
+    int_type sputc(char_type c); 
+    streamsize sputn(const char_type* s, streamsize n); 
+ 
+protected: 
+    basic_streambuf(); 
+    basic_streambuf(const basic_streambuf& rhs); 
+    basic_streambuf& operator=(const basic_streambuf& rhs); 
+    void swap(basic_streambuf& rhs); 
+ 
+    // 27.6.2.3.2 Get area: 
+    char_type* eback() const; 
+    char_type* gptr() const; 
+    char_type* egptr() const; 
+    void gbump(int n); 
+    void setg(char_type* gbeg, char_type* gnext, char_type* gend); 
+ 
+    // 27.6.2.3.3 Put area: 
+    char_type* pbase() const; 
+    char_type* pptr() const; 
+    char_type* epptr() const; 
+    void pbump(int n); 
+    void setp(char_type* pbeg, char_type* pend); 
+ 
+    // 27.6.2.4 virtual functions: 
+    // 27.6.2.4.1 Locales: 
+    virtual void imbue(const locale& loc); 
+ 
+    // 27.6.2.4.2 Buffer management and positioning: 
+    virtual basic_streambuf* setbuf(char_type* s, streamsize n); 
+    virtual pos_type seekoff(off_type off, ios_base::seekdir way, 
+                             ios_base::openmode which = ios_base::in | ios_base::out); 
+    virtual pos_type seekpos(pos_type sp, 
+                             ios_base::openmode which = ios_base::in | ios_base::out); 
+    virtual int sync(); 
+ 
+    // 27.6.2.4.3 Get area: 
+    virtual streamsize showmanyc(); 
+    virtual streamsize xsgetn(char_type* s, streamsize n); 
+    virtual int_type underflow(); 
+    virtual int_type uflow(); 
+ 
+    // 27.6.2.4.4 Putback: 
+    virtual int_type pbackfail(int_type c = traits_type::eof()); 
+ 
+    // 27.6.2.4.5 Put area: 
+    virtual streamsize xsputn(const char_type* s, streamsize n); 
+    virtual int_type overflow (int_type c = traits_type::eof()); 
+}; 
+ 
+}  // std 
+ 
+*/ 
+ 
+#include <__config> 
+#include <ios> 
+#include <iosfwd> 
+ 
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 
+#pragma GCC system_header 
+#endif 
+ 
+_LIBCPP_PUSH_MACROS 
+#include <__undef_macros> 
+ 
+_LIBCPP_BEGIN_NAMESPACE_STD 
+ 
+template <class _CharT, class _Traits> 
+class _LIBCPP_TEMPLATE_VIS basic_streambuf 
+{ 
+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"); 
+ 
+    virtual ~basic_streambuf(); 
+ 
+    // 27.6.2.2.1 locales: 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    locale pubimbue(const locale& __loc) {
-        imbue(__loc);
-        locale __r = __loc_;
-        __loc_ = __loc;
-        return __r;
-    }
-
+    locale pubimbue(const locale& __loc) { 
+        imbue(__loc); 
+        locale __r = __loc_; 
+        __loc_ = __loc; 
+        return __r; 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    locale getloc() const { return __loc_; }
-
-    // 27.6.2.2.2 buffer and positioning:
+    locale getloc() const { return __loc_; } 
+ 
+    // 27.6.2.2.2 buffer and positioning: 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    basic_streambuf* pubsetbuf(char_type* __s, streamsize __n)
-    { return setbuf(__s, __n); }
-
+    basic_streambuf* pubsetbuf(char_type* __s, streamsize __n) 
+    { return setbuf(__s, __n); } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    pos_type pubseekoff(off_type __off, ios_base::seekdir __way,
-                        ios_base::openmode __which = ios_base::in | ios_base::out)
-    { return seekoff(__off, __way, __which); }
-
+    pos_type pubseekoff(off_type __off, ios_base::seekdir __way, 
+                        ios_base::openmode __which = ios_base::in | ios_base::out) 
+    { return seekoff(__off, __way, __which); } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    pos_type pubseekpos(pos_type __sp,
-                        ios_base::openmode __which = ios_base::in | ios_base::out)
-    { return seekpos(__sp, __which); }
-
+    pos_type pubseekpos(pos_type __sp, 
+                        ios_base::openmode __which = ios_base::in | ios_base::out) 
+    { return seekpos(__sp, __which); } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int pubsync() { return sync(); }
-
-    // Get and put areas:
-    // 27.6.2.2.3 Get area:
+    int pubsync() { return sync(); } 
+ 
+    // Get and put areas: 
+    // 27.6.2.2.3 Get area: 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    streamsize in_avail() {
-        if (__ninp_ < __einp_)
-            return static_cast<streamsize>(__einp_ - __ninp_);
-        return showmanyc();
-    }
-
+    streamsize in_avail() { 
+        if (__ninp_ < __einp_) 
+            return static_cast<streamsize>(__einp_ - __ninp_); 
+        return showmanyc(); 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int_type snextc() {
-        if (sbumpc() == traits_type::eof())
-            return traits_type::eof();
-        return sgetc();
-    }
-
+    int_type snextc() { 
+        if (sbumpc() == traits_type::eof()) 
+            return traits_type::eof(); 
+        return sgetc(); 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int_type sbumpc() {
-        if (__ninp_ == __einp_)
-            return uflow();
-        return traits_type::to_int_type(*__ninp_++);
-    }
-
+    int_type sbumpc() { 
+        if (__ninp_ == __einp_) 
+            return uflow(); 
+        return traits_type::to_int_type(*__ninp_++); 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int_type sgetc() {
-        if (__ninp_ == __einp_)
-            return underflow();
-        return traits_type::to_int_type(*__ninp_);
-    }
-
+    int_type sgetc() { 
+        if (__ninp_ == __einp_) 
+            return underflow(); 
+        return traits_type::to_int_type(*__ninp_); 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    streamsize sgetn(char_type* __s, streamsize __n)
-    { return xsgetn(__s, __n); }
-
-    // 27.6.2.2.4 Putback:
+    streamsize sgetn(char_type* __s, streamsize __n) 
+    { return xsgetn(__s, __n); } 
+ 
+    // 27.6.2.2.4 Putback: 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int_type sputbackc(char_type __c) {
-        if (__binp_ == __ninp_ || !traits_type::eq(__c, __ninp_[-1]))
-            return pbackfail(traits_type::to_int_type(__c));
-        return traits_type::to_int_type(*--__ninp_);
-    }
-
+    int_type sputbackc(char_type __c) { 
+        if (__binp_ == __ninp_ || !traits_type::eq(__c, __ninp_[-1])) 
+            return pbackfail(traits_type::to_int_type(__c)); 
+        return traits_type::to_int_type(*--__ninp_); 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int_type sungetc() {
-        if (__binp_ == __ninp_)
-          return pbackfail();
-        return traits_type::to_int_type(*--__ninp_);
-    }
-
-    // 27.6.2.2.5 Put area:
+    int_type sungetc() { 
+        if (__binp_ == __ninp_) 
+          return pbackfail(); 
+        return traits_type::to_int_type(*--__ninp_); 
+    } 
+ 
+    // 27.6.2.2.5 Put area: 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    int_type sputc(char_type __c) {
-        if (__nout_ == __eout_)
-            return overflow(traits_type::to_int_type(__c));
-        *__nout_++ = __c;
-        return traits_type::to_int_type(__c);
-    }
-
+    int_type sputc(char_type __c) { 
+        if (__nout_ == __eout_) 
+            return overflow(traits_type::to_int_type(__c)); 
+        *__nout_++ = __c; 
+        return traits_type::to_int_type(__c); 
+    } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    streamsize sputn(const char_type* __s, streamsize __n)
-    { return xsputn(__s, __n); }
-
-protected:
-    basic_streambuf();
-    basic_streambuf(const basic_streambuf& __rhs);
-    basic_streambuf& operator=(const basic_streambuf& __rhs);
-    void swap(basic_streambuf& __rhs);
-
-    // 27.6.2.3.2 Get area:
-    _LIBCPP_INLINE_VISIBILITY char_type* eback() const {return __binp_;}
-    _LIBCPP_INLINE_VISIBILITY char_type* gptr()  const {return __ninp_;}
-    _LIBCPP_INLINE_VISIBILITY char_type* egptr() const {return __einp_;}
-
+    streamsize sputn(const char_type* __s, streamsize __n) 
+    { return xsputn(__s, __n); } 
+ 
+protected: 
+    basic_streambuf(); 
+    basic_streambuf(const basic_streambuf& __rhs); 
+    basic_streambuf& operator=(const basic_streambuf& __rhs); 
+    void swap(basic_streambuf& __rhs); 
+ 
+    // 27.6.2.3.2 Get area: 
+    _LIBCPP_INLINE_VISIBILITY char_type* eback() const {return __binp_;} 
+    _LIBCPP_INLINE_VISIBILITY char_type* gptr()  const {return __ninp_;} 
+    _LIBCPP_INLINE_VISIBILITY char_type* egptr() const {return __einp_;} 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    void gbump(int __n) { __ninp_ += __n; }
-
+    void gbump(int __n) { __ninp_ += __n; } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    void setg(char_type* __gbeg, char_type* __gnext, char_type* __gend) {
-        __binp_ = __gbeg;
-        __ninp_ = __gnext;
-        __einp_ = __gend;
-    }
-
-    // 27.6.2.3.3 Put area:
-    _LIBCPP_INLINE_VISIBILITY char_type* pbase() const {return __bout_;}
-    _LIBCPP_INLINE_VISIBILITY char_type* pptr()  const {return __nout_;}
-    _LIBCPP_INLINE_VISIBILITY char_type* epptr() const {return __eout_;}
-
+    void setg(char_type* __gbeg, char_type* __gnext, char_type* __gend) { 
+        __binp_ = __gbeg; 
+        __ninp_ = __gnext; 
+        __einp_ = __gend; 
+    } 
+ 
+    // 27.6.2.3.3 Put area: 
+    _LIBCPP_INLINE_VISIBILITY char_type* pbase() const {return __bout_;} 
+    _LIBCPP_INLINE_VISIBILITY char_type* pptr()  const {return __nout_;} 
+    _LIBCPP_INLINE_VISIBILITY char_type* epptr() const {return __eout_;} 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    void pbump(int __n) { __nout_ += __n; }
-
-    _LIBCPP_INLINE_VISIBILITY
-    void __pbump(streamsize __n) { __nout_ += __n; }
-
+    void pbump(int __n) { __nout_ += __n; } 
+ 
+    _LIBCPP_INLINE_VISIBILITY 
+    void __pbump(streamsize __n) { __nout_ += __n; } 
+ 
     inline _LIBCPP_HIDE_FROM_ABI_AFTER_V1
-    void setp(char_type* __pbeg, char_type* __pend) {
-        __bout_ = __nout_ = __pbeg;
-        __eout_ = __pend;
-    }
-
-    // 27.6.2.4 virtual functions:
-    // 27.6.2.4.1 Locales:
-    virtual void imbue(const locale& __loc);
-
-    // 27.6.2.4.2 Buffer management and positioning:
-    virtual basic_streambuf* setbuf(char_type* __s, streamsize __n);
-    virtual pos_type seekoff(off_type __off, ios_base::seekdir __way,
-                             ios_base::openmode __which = ios_base::in | ios_base::out);
-    virtual pos_type seekpos(pos_type __sp,
-                             ios_base::openmode __which = ios_base::in | ios_base::out);
-    virtual int sync();
-
-    // 27.6.2.4.3 Get area:
-    virtual streamsize showmanyc();
-    virtual streamsize xsgetn(char_type* __s, streamsize __n);
-    virtual int_type underflow();
-    virtual int_type uflow();
-
-    // 27.6.2.4.4 Putback:
-    virtual int_type pbackfail(int_type __c = traits_type::eof());
-
-    // 27.6.2.4.5 Put area:
-    virtual streamsize xsputn(const char_type* __s, streamsize __n);
-    virtual int_type overflow(int_type __c = traits_type::eof());
-
-private:
-    locale __loc_;
-    char_type* __binp_;
-    char_type* __ninp_;
-    char_type* __einp_;
-    char_type* __bout_;
-    char_type* __nout_;
-    char_type* __eout_;
-};
-
-template <class _CharT, class _Traits>
-basic_streambuf<_CharT, _Traits>::~basic_streambuf()
-{
-}
-
-template <class _CharT, class _Traits>
-basic_streambuf<_CharT, _Traits>::basic_streambuf()
-    : __binp_(nullptr),
-      __ninp_(nullptr),
-      __einp_(nullptr),
-      __bout_(nullptr),
-      __nout_(nullptr),
-      __eout_(nullptr)
-{
-}
-
-template <class _CharT, class _Traits>
-basic_streambuf<_CharT, _Traits>::basic_streambuf(const basic_streambuf& __sb)
-    : __loc_(__sb.__loc_),
-      __binp_(__sb.__binp_),
-      __ninp_(__sb.__ninp_),
-      __einp_(__sb.__einp_),
-      __bout_(__sb.__bout_),
-      __nout_(__sb.__nout_),
-      __eout_(__sb.__eout_)
-{
-}
-
-template <class _CharT, class _Traits>
-basic_streambuf<_CharT, _Traits>&
-basic_streambuf<_CharT, _Traits>::operator=(const basic_streambuf& __sb)
-{
-    __loc_ = __sb.__loc_;
-    __binp_ = __sb.__binp_;
-    __ninp_ = __sb.__ninp_;
-    __einp_ = __sb.__einp_;
-    __bout_ = __sb.__bout_;
-    __nout_ = __sb.__nout_;
-    __eout_ = __sb.__eout_;
-    return *this;
-}
-
-template <class _CharT, class _Traits>
-void
-basic_streambuf<_CharT, _Traits>::swap(basic_streambuf& __sb)
-{
-    _VSTD::swap(__loc_, __sb.__loc_);
-    _VSTD::swap(__binp_, __sb.__binp_);
-    _VSTD::swap(__ninp_, __sb.__ninp_);
-    _VSTD::swap(__einp_, __sb.__einp_);
-    _VSTD::swap(__bout_, __sb.__bout_);
-    _VSTD::swap(__nout_, __sb.__nout_);
-    _VSTD::swap(__eout_, __sb.__eout_);
-}
-
-template <class _CharT, class _Traits>
-void
-basic_streambuf<_CharT, _Traits>::imbue(const locale&)
-{
-}
-
-template <class _CharT, class _Traits>
-basic_streambuf<_CharT, _Traits>*
-basic_streambuf<_CharT, _Traits>::setbuf(char_type*, streamsize)
-{
-    return this;
-}
-
-template <class _CharT, class _Traits>
-typename basic_streambuf<_CharT, _Traits>::pos_type
-basic_streambuf<_CharT, _Traits>::seekoff(off_type, ios_base::seekdir,
-                                          ios_base::openmode)
-{
-    return pos_type(off_type(-1));
-}
-
-template <class _CharT, class _Traits>
-typename basic_streambuf<_CharT, _Traits>::pos_type
-basic_streambuf<_CharT, _Traits>::seekpos(pos_type, ios_base::openmode)
-{
-    return pos_type(off_type(-1));
-}
-
-template <class _CharT, class _Traits>
-int
-basic_streambuf<_CharT, _Traits>::sync()
-{
-    return 0;
-}
-
-template <class _CharT, class _Traits>
-streamsize
-basic_streambuf<_CharT, _Traits>::showmanyc()
-{
-    return 0;
-}
-
-template <class _CharT, class _Traits>
-streamsize
-basic_streambuf<_CharT, _Traits>::xsgetn(char_type* __s, streamsize __n)
-{
-    const int_type __eof = traits_type::eof();
-    int_type __c;
-    streamsize __i = 0;
-    while(__i < __n)
-    {
-        if (__ninp_ < __einp_)
-        {
-            const streamsize __len = _VSTD::min(static_cast<streamsize>(INT_MAX),
-                                _VSTD::min(__einp_ - __ninp_, __n - __i));
-            traits_type::copy(__s, __ninp_, __len);
-            __s +=  __len;
-            __i +=  __len;
-            this->gbump(__len);
-        }
-        else if ((__c = uflow()) != __eof)
-        {
-            *__s = traits_type::to_char_type(__c);
-            ++__s;
-            ++__i;
-        }
-        else
-            break;
-    }
-    return __i;
-}
-
-template <class _CharT, class _Traits>
-typename basic_streambuf<_CharT, _Traits>::int_type
-basic_streambuf<_CharT, _Traits>::underflow()
-{
-    return traits_type::eof();
-}
-
-template <class _CharT, class _Traits>
-typename basic_streambuf<_CharT, _Traits>::int_type
-basic_streambuf<_CharT, _Traits>::uflow()
-{
-    if (underflow() == traits_type::eof())
-        return traits_type::eof();
-    return traits_type::to_int_type(*__ninp_++);
-}
-
-template <class _CharT, class _Traits>
-typename basic_streambuf<_CharT, _Traits>::int_type
-basic_streambuf<_CharT, _Traits>::pbackfail(int_type)
-{
-    return traits_type::eof();
-}
-
-template <class _CharT, class _Traits>
-streamsize
-basic_streambuf<_CharT, _Traits>::xsputn(const char_type* __s, streamsize __n)
-{
-    streamsize __i = 0;
-    int_type __eof = traits_type::eof();
-    while( __i < __n)
-    {
-        if (__nout_ >= __eout_)
-        {
-            if (overflow(traits_type::to_int_type(*__s)) == __eof)
-                break;
-            ++__s;
-            ++__i;
-        }
-        else
-        {
-            streamsize __chunk_size = _VSTD::min(__eout_ - __nout_, __n - __i);
-            traits_type::copy(__nout_, __s, __chunk_size);
-            __nout_ += __chunk_size;
-            __s     += __chunk_size;
-            __i     += __chunk_size;
-        }
-    }
-    return __i;
-}
-
-template <class _CharT, class _Traits>
-typename basic_streambuf<_CharT, _Traits>::int_type
-basic_streambuf<_CharT, _Traits>::overflow(int_type)
-{
-    return traits_type::eof();
-}
-
-_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_streambuf<char>)
-_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_streambuf<wchar_t>)
-
-_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>)
-_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>)
-
-_LIBCPP_END_NAMESPACE_STD
-
-_LIBCPP_POP_MACROS
-
-#endif // _LIBCPP_STREAMBUF
+    void setp(char_type* __pbeg, char_type* __pend) { 
+        __bout_ = __nout_ = __pbeg; 
+        __eout_ = __pend; 
+    } 
+ 
+    // 27.6.2.4 virtual functions: 
+    // 27.6.2.4.1 Locales: 
+    virtual void imbue(const locale& __loc); 
+ 
+    // 27.6.2.4.2 Buffer management and positioning: 
+    virtual basic_streambuf* setbuf(char_type* __s, streamsize __n); 
+    virtual pos_type seekoff(off_type __off, ios_base::seekdir __way, 
+                             ios_base::openmode __which = ios_base::in | ios_base::out); 
+    virtual pos_type seekpos(pos_type __sp, 
+                             ios_base::openmode __which = ios_base::in | ios_base::out); 
+    virtual int sync(); 
+ 
+    // 27.6.2.4.3 Get area: 
+    virtual streamsize showmanyc(); 
+    virtual streamsize xsgetn(char_type* __s, streamsize __n); 
+    virtual int_type underflow(); 
+    virtual int_type uflow(); 
+ 
+    // 27.6.2.4.4 Putback: 
+    virtual int_type pbackfail(int_type __c = traits_type::eof()); 
+ 
+    // 27.6.2.4.5 Put area: 
+    virtual streamsize xsputn(const char_type* __s, streamsize __n); 
+    virtual int_type overflow(int_type __c = traits_type::eof()); 
+ 
+private: 
+    locale __loc_; 
+    char_type* __binp_; 
+    char_type* __ninp_; 
+    char_type* __einp_; 
+    char_type* __bout_; 
+    char_type* __nout_; 
+    char_type* __eout_; 
+}; 
+ 
+template <class _CharT, class _Traits> 
+basic_streambuf<_CharT, _Traits>::~basic_streambuf() 
+{ 
+} 
+ 
+template <class _CharT, class _Traits> 
+basic_streambuf<_CharT, _Traits>::basic_streambuf() 
+    : __binp_(nullptr), 
+      __ninp_(nullptr), 
+      __einp_(nullptr), 
+      __bout_(nullptr), 
+      __nout_(nullptr), 
+      __eout_(nullptr) 
+{ 
+} 
+ 
+template <class _CharT, class _Traits> 
+basic_streambuf<_CharT, _Traits>::basic_streambuf(const basic_streambuf& __sb) 
+    : __loc_(__sb.__loc_), 
+      __binp_(__sb.__binp_), 
+      __ninp_(__sb.__ninp_), 
+      __einp_(__sb.__einp_), 
+      __bout_(__sb.__bout_), 
+      __nout_(__sb.__nout_), 
+      __eout_(__sb.__eout_) 
+{ 
+} 
+ 
+template <class _CharT, class _Traits> 
+basic_streambuf<_CharT, _Traits>& 
+basic_streambuf<_CharT, _Traits>::operator=(const basic_streambuf& __sb) 
+{ 
+    __loc_ = __sb.__loc_; 
+    __binp_ = __sb.__binp_; 
+    __ninp_ = __sb.__ninp_; 
+    __einp_ = __sb.__einp_; 
+    __bout_ = __sb.__bout_; 
+    __nout_ = __sb.__nout_; 
+    __eout_ = __sb.__eout_; 
+    return *this; 
+} 
+ 
+template <class _CharT, class _Traits> 
+void 
+basic_streambuf<_CharT, _Traits>::swap(basic_streambuf& __sb) 
+{ 
+    _VSTD::swap(__loc_, __sb.__loc_); 
+    _VSTD::swap(__binp_, __sb.__binp_); 
+    _VSTD::swap(__ninp_, __sb.__ninp_); 
+    _VSTD::swap(__einp_, __sb.__einp_); 
+    _VSTD::swap(__bout_, __sb.__bout_); 
+    _VSTD::swap(__nout_, __sb.__nout_); 
+    _VSTD::swap(__eout_, __sb.__eout_); 
+} 
+ 
+template <class _CharT, class _Traits> 
+void 
+basic_streambuf<_CharT, _Traits>::imbue(const locale&) 
+{ 
+} 
+ 
+template <class _CharT, class _Traits> 
+basic_streambuf<_CharT, _Traits>* 
+basic_streambuf<_CharT, _Traits>::setbuf(char_type*, streamsize) 
+{ 
+    return this; 
+} 
+ 
+template <class _CharT, class _Traits> 
+typename basic_streambuf<_CharT, _Traits>::pos_type 
+basic_streambuf<_CharT, _Traits>::seekoff(off_type, ios_base::seekdir, 
+                                          ios_base::openmode) 
+{ 
+    return pos_type(off_type(-1)); 
+} 
+ 
+template <class _CharT, class _Traits> 
+typename basic_streambuf<_CharT, _Traits>::pos_type 
+basic_streambuf<_CharT, _Traits>::seekpos(pos_type, ios_base::openmode) 
+{ 
+    return pos_type(off_type(-1)); 
+} 
+ 
+template <class _CharT, class _Traits> 
+int 
+basic_streambuf<_CharT, _Traits>::sync() 
+{ 
+    return 0; 
+} 
+ 
+template <class _CharT, class _Traits> 
+streamsize 
+basic_streambuf<_CharT, _Traits>::showmanyc() 
+{ 
+    return 0; 
+} 
+ 
+template <class _CharT, class _Traits> 
+streamsize 
+basic_streambuf<_CharT, _Traits>::xsgetn(char_type* __s, streamsize __n) 
+{ 
+    const int_type __eof = traits_type::eof(); 
+    int_type __c; 
+    streamsize __i = 0; 
+    while(__i < __n) 
+    { 
+        if (__ninp_ < __einp_) 
+        { 
+            const streamsize __len = _VSTD::min(static_cast<streamsize>(INT_MAX), 
+                                _VSTD::min(__einp_ - __ninp_, __n - __i)); 
+            traits_type::copy(__s, __ninp_, __len); 
+            __s +=  __len; 
+            __i +=  __len; 
+            this->gbump(__len); 
+        } 
+        else if ((__c = uflow()) != __eof) 
+        { 
+            *__s = traits_type::to_char_type(__c); 
+            ++__s; 
+            ++__i; 
+        } 
+        else 
+            break; 
+    } 
+    return __i; 
+} 
+ 
+template <class _CharT, class _Traits> 
+typename basic_streambuf<_CharT, _Traits>::int_type 
+basic_streambuf<_CharT, _Traits>::underflow() 
+{ 
+    return traits_type::eof(); 
+} 
+ 
+template <class _CharT, class _Traits> 
+typename basic_streambuf<_CharT, _Traits>::int_type 
+basic_streambuf<_CharT, _Traits>::uflow() 
+{ 
+    if (underflow() == traits_type::eof()) 
+        return traits_type::eof(); 
+    return traits_type::to_int_type(*__ninp_++); 
+} 
+ 
+template <class _CharT, class _Traits> 
+typename basic_streambuf<_CharT, _Traits>::int_type 
+basic_streambuf<_CharT, _Traits>::pbackfail(int_type) 
+{ 
+    return traits_type::eof(); 
+} 
+ 
+template <class _CharT, class _Traits> 
+streamsize 
+basic_streambuf<_CharT, _Traits>::xsputn(const char_type* __s, streamsize __n) 
+{ 
+    streamsize __i = 0; 
+    int_type __eof = traits_type::eof(); 
+    while( __i < __n) 
+    { 
+        if (__nout_ >= __eout_) 
+        { 
+            if (overflow(traits_type::to_int_type(*__s)) == __eof) 
+                break; 
+            ++__s; 
+            ++__i; 
+        } 
+        else 
+        { 
+            streamsize __chunk_size = _VSTD::min(__eout_ - __nout_, __n - __i); 
+            traits_type::copy(__nout_, __s, __chunk_size); 
+            __nout_ += __chunk_size; 
+            __s     += __chunk_size; 
+            __i     += __chunk_size; 
+        } 
+    } 
+    return __i; 
+} 
+ 
+template <class _CharT, class _Traits> 
+typename basic_streambuf<_CharT, _Traits>::int_type 
+basic_streambuf<_CharT, _Traits>::overflow(int_type) 
+{ 
+    return traits_type::eof(); 
+} 
+ 
+_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_streambuf<char>) 
+_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_streambuf<wchar_t>) 
+ 
+_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<char>) 
+_LIBCPP_EXTERN_TEMPLATE(class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS basic_ios<wchar_t>) 
+ 
+_LIBCPP_END_NAMESPACE_STD 
+ 
+_LIBCPP_POP_MACROS 
+ 
+#endif // _LIBCPP_STREAMBUF