2006-12-06 Benjamin Kosnik <bkoz@redhat.com>

	* include/Makefile.am (std_headers_rename): Remove.
	(c_base_headers_rename): Remove.
	(std_headers): Adjust to true names.
	(c_base_headers): Adjust to true names.
	(stamp-c_base, stamp_std, stamp_c_base_extra): Adjust.
	* configure: Regenerate.
	* include/Makefile.in: Regenerate.

        * include/std/std_algorithm.h: To...
        * include/std/std_bitset.h: To...
        * include/std/std_complex.h: To...
        * include/std/std_deque.h: To...
        * include/std/std_fstream.h: To...
        * include/std/std_functional.h: To...
        * include/std/std_iomanip.h: To...
        * include/std/std_iosfwd.h: To...
        * include/std/std_ios.h: To...
        * include/std/std_iostream.h: To...
        * include/std/std_istream.h: To...
        * include/std/std_iterator.h: To...
        * include/std/std_limits.h: To...
        * include/std/std_list.h: To...
        * include/std/std_locale.h: To...
        * include/std/std_map.h: To...
        * include/std/std_memory.h: To...
        * include/std/std_numeric.h: To...
        * include/std/std_ostream.h: To...
        * include/std/std_queue.h: To...
        * include/std/std_set.h: To...
        * include/std/std_sstream.h: To...
        * include/std/std_stack.h: To...
        * include/std/std_stdexcept.h: To...
        * include/std/std_streambuf.h: To...
        * include/std/std_string.h: To...
        * include/std/std_utility.h: To...
        * include/std/std_valarray.h: To...
        * include/std/std_vector.h: To...
        * include/std/algorithm: ...this.
        * include/std/bitset: ...this.
        * include/std/complex: ...this.
        * include/std/deque: ...this.
        * include/std/fstream: ...this.
        * include/std/functional: ...this.
        * include/std/iomanip: ...this.
        * include/std/iosfwd: ...this.
        * include/std/ios: ...this.
        * include/std/iostream: ...this.
        * include/std/istream: ...this.
        * include/std/iterator: ...this.
        * include/std/limits: ...this.
        * include/std/list: ...this.
        * include/std/locale: ...this.
        * include/std/map: ...this.
        * include/std/memory: ...this.
        * include/std/numeric: ...this.
        * include/std/ostream: ...this.
        * include/std/queue: ...this.
        * include/std/set: ...this.
        * include/std/sstream: ...this.
        * include/std/stack: ...this.
        * include/std/stdexcept: ...this.
        * include/std/streambuf: ...this.
        * include/std/string: ...this.
        * include/std/utility: ...this.
        * include/std/valarray: ...this.
        * include/std/vector: ...this.

        * include/c_std/std_cassert.h: To...
        * include/c_std/std_cctype.h: To...
        * include/c_std/std_cerrno.h: To...
        * include/c_std/std_cfloat.h: To...
        * include/c_std/std_ciso646.h: To...
        * include/c_std/std_climits.h: To...
        * include/c_std/std_clocale.h: To...
        * include/c_std/std_cmath.h: To...
        * include/c_std/std_csetjmp.h: To...
        * include/c_std/std_csignal.h: To...
        * include/c_std/std_cstdarg.h: To...
        * include/c_std/std_cstddef.h: To...
        * include/c_std/std_cstdio.h: To...
        * include/c_std/std_cstdlib.h: To...
        * include/c_std/std_cstring.h: To...
        * include/c_std/std_ctime.h: To...
        * include/c_std/std_cwchar.h: To...
        * include/c_std/std_cwctype.h: To...
        * include/c_std/cassert: ...this.
        * include/c_std/cctype: ...this.
        * include/c_std/cerrno: ...this.
        * include/c_std/cfloat: ...this.
        * include/c_std/ciso646: ...this.
        * include/c_std/climits: ...this.
        * include/c_std/clocale: ...this.
        * include/c_std/cmath: ...this.
        * include/c_std/csetjmp: ...this.
        * include/c_std/csignal: ...this.
        * include/c_std/cstdarg: ...this.
        * include/c_std/cstddef: ...this.
        * include/c_std/cstdio: ...this.
        * include/c_std/cstdlib: ...this.
        * include/c_std/cstring: ...this.
        * include/c_std/ctime: ...this.
        * include/c_std/cwchar: ...this.
        * include/c_std/cwctype: ...this.

        * include/c/std_cassert.h: To...
        * include/c/std_cctype.h: To...
        * include/c/std_cerrno.h: To...
        * include/c/std_cfloat.h: To...
        * include/c/std_ciso646.h: To...
        * include/c/std_climits.h: To...
        * include/c/std_clocale.h: To...
        * include/c/std_cmath.h: To...
        * include/c/std_csetjmp.h: To...
        * include/c/std_csignal.h: To...
        * include/c/std_cstdarg.h: To...
        * include/c/std_cstddef.h: To...
        * include/c/std_cstdio.h: To...
        * include/c/std_cstdlib.h: To...
        * include/c/std_cstring.h: To...
        * include/c/std_ctime.h: To...
        * include/c/std_cwchar.h: To...
        * include/c/std_cwctype.h: To...
        * include/c/cassert: ...this.
        * include/c/cctype: ...this.
        * include/c/cerrno: ...this.
        * include/c/cfloat: ...this.
        * include/c/ciso646: ...this.
        * include/c/climits: ...this.
        * include/c/clocale: ...this.
        * include/c/cmath: ...this.
        * include/c/csetjmp: ...this.
        * include/c/csignal: ...this.
        * include/c/cstdarg: ...this.
        * include/c/cstddef: ...this.
        * include/c/cstdio: ...this.
        * include/c/cstdlib: ...this.
        * include/c/cstring: ...this.
        * include/c/ctime: ...this.
        * include/c/cwchar: ...this.
        * include/c/cwctype: ...this.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@119611 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 786 insertions, 0 deletions

diff --git a/libstdc++-v3/include/std/fstream b/libstdc++-v3/include/std/fstream
new file mode 100644
index 00000000000..f664f2de9f4
--- /dev/null
+++ b/libstdc++-v3/include/std/fstream
@@ -0,0 +1,786 @@
+// File based streams -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+// Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+/** @file fstream
+ *  This is a Standard C++ Library header.
+ */
+
+//
+// ISO C++ 14882: 27.8  File-based streams
+//
+
+#ifndef _GLIBCXX_FSTREAM
+#define _GLIBCXX_FSTREAM 1
+
+#pragma GCC system_header
+
+#include <istream>
+#include <ostream>
+#include <locale>	// For codecvt
+#include <cstdio>       // For SEEK_SET, SEEK_CUR, SEEK_END, BUFSIZ     
+#include <bits/basic_file.h>
+#include <bits/gthr.h>
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+  // [27.8.1.1] template class basic_filebuf
+  /**
+   *  @brief  The actual work of input and output (for files).
+   *
+   *  This class associates both its input and output sequence with an
+   *  external disk file, and maintains a joint file position for both
+   *  sequences.  Many of its sematics are described in terms of similar
+   *  behavior in the Standard C Library's @c FILE streams.
+  */
+  // Requirements on traits_type, specific to this class:
+  // traits_type::pos_type must be fpos<traits_type::state_type>
+  // traits_type::off_type must be streamoff
+  // traits_type::state_type must be Assignable and DefaultConstructable,
+  // and traits_type::state_type() must be the initial state for codecvt.
+  template<typename _CharT, typename _Traits>
+    class basic_filebuf : public basic_streambuf<_CharT, _Traits>
+    {
+    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;
+
+      typedef basic_streambuf<char_type, traits_type>  	__streambuf_type;
+      typedef basic_filebuf<char_type, traits_type>     __filebuf_type;
+      typedef __basic_file<char>		        __file_type;
+      typedef typename traits_type::state_type          __state_type;
+      typedef codecvt<char_type, char, __state_type>    __codecvt_type;
+
+      friend class ios_base; // For sync_with_stdio.
+
+    protected:
+      // Data Members:
+      // MT lock inherited from libio or other low-level io library.
+      __c_lock          	_M_lock;
+
+      // External buffer.
+      __file_type 		_M_file;
+
+      /**
+       *  @if maint
+       *  Place to stash in || out || in | out settings for current filebuf.
+       *  @endif
+      */
+      ios_base::openmode 	_M_mode;
+
+      // Beginning state type for codecvt.
+      __state_type 		_M_state_beg;
+
+      // During output, the state that corresponds to pptr(),
+      // during input, the state that corresponds to egptr() and
+      // _M_ext_next.
+      __state_type		_M_state_cur;
+
+      // Not used for output. During input, the state that corresponds
+      // to eback() and _M_ext_buf.
+      __state_type		_M_state_last;
+
+      /**
+       *  @if maint
+       *  Pointer to the beginning of internal buffer.
+       *  @endif
+      */
+      char_type*		_M_buf; 	
+
+      /**
+       *  @if maint
+       *  Actual size of internal buffer. This number is equal to the size
+       *  of the put area + 1 position, reserved for the overflow char of
+       *  a full area.
+       *  @endif
+      */
+      size_t			_M_buf_size;
+
+      // Set iff _M_buf is allocated memory from _M_allocate_internal_buffer.
+      bool			_M_buf_allocated;
+
+      /**
+       *  @if maint
+       *  _M_reading == false && _M_writing == false for 'uncommitted' mode;  
+       *  _M_reading == true for 'read' mode;
+       *  _M_writing == true for 'write' mode;
+       *
+       *  NB: _M_reading == true && _M_writing == true is unused.
+       *  @endif
+      */ 
+      bool                      _M_reading;
+      bool                      _M_writing;
+
+      //@{
+      /**
+       *  @if maint
+       *  Necessary bits for putback buffer management.
+       *
+       *  @note pbacks of over one character are not currently supported.
+       *  @endif
+      */
+      char_type			_M_pback; 
+      char_type*		_M_pback_cur_save;
+      char_type*		_M_pback_end_save;
+      bool			_M_pback_init; 
+      //@}
+
+      // Cached codecvt facet.
+      const __codecvt_type* 	_M_codecvt;
+
+      /**
+       *  @if maint
+       *  Buffer for external characters. Used for input when
+       *  codecvt::always_noconv() == false. When valid, this corresponds
+       *  to eback().
+       *  @endif
+      */ 
+      char*			_M_ext_buf;
+
+      /**
+       *  @if maint
+       *  Size of buffer held by _M_ext_buf.
+       *  @endif
+      */ 
+      streamsize		_M_ext_buf_size;
+
+      /**
+       *  @if maint
+       *  Pointers into the buffer held by _M_ext_buf that delimit a
+       *  subsequence of bytes that have been read but not yet converted.
+       *  When valid, _M_ext_next corresponds to egptr().
+       *  @endif
+      */ 
+      const char*		_M_ext_next;
+      char*			_M_ext_end;
+
+      /**
+       *  @if maint
+       *  Initializes pback buffers, and moves normal buffers to safety.
+       *  Assumptions:
+       *  _M_in_cur has already been moved back
+       *  @endif
+      */
+      void
+      _M_create_pback()
+      {
+	if (!_M_pback_init)
+	  {
+	    _M_pback_cur_save = this->gptr();
+	    _M_pback_end_save = this->egptr();
+	    this->setg(&_M_pback, &_M_pback, &_M_pback + 1);
+	    _M_pback_init = true;
+	  }
+      }
+
+      /**
+       *  @if maint
+       *  Deactivates pback buffer contents, and restores normal buffer.
+       *  Assumptions:
+       *  The pback buffer has only moved forward.
+       *  @endif
+      */ 
+      void
+      _M_destroy_pback() throw()
+      {
+	if (_M_pback_init)
+	  {
+	    // Length _M_in_cur moved in the pback buffer.
+	    _M_pback_cur_save += this->gptr() != this->eback();
+	    this->setg(_M_buf, _M_pback_cur_save, _M_pback_end_save);
+	    _M_pback_init = false;
+	  }
+      }
+
+    public:
+      // Constructors/destructor:
+      /**
+       *  @brief  Does not open any files.
+       *
+       *  The default constructor initializes the parent class using its
+       *  own default ctor.
+      */
+      basic_filebuf();
+
+      /**
+       *  @brief  The destructor closes the file first.
+      */
+      virtual
+      ~basic_filebuf()
+      { this->close(); }
+
+      // Members:
+      /**
+       *  @brief  Returns true if the external file is open.
+      */
+      bool
+      is_open() const throw()
+      { return _M_file.is_open(); }
+
+      /**
+       *  @brief  Opens an external file.
+       *  @param  s  The name of the file.
+       *  @param  mode  The open mode flags.
+       *  @return  @c this on success, NULL on failure
+       *
+       *  If a file is already open, this function immediately fails.
+       *  Otherwise it tries to open the file named @a s using the flags
+       *  given in @a mode.
+       *
+       *  [Table 92 gives the relation between openmode combinations and the
+       *  equivalent fopen() flags, but the table has not been copied yet.]
+      */
+      __filebuf_type*
+      open(const char* __s, ios_base::openmode __mode);
+
+      /**
+       *  @brief  Closes the currently associated file.
+       *  @return  @c this on success, NULL on failure
+       *
+       *  If no file is currently open, this function immediately fails.
+       *
+       *  If a "put buffer area" exists, @c overflow(eof) is called to flush
+       *  all the characters.  The file is then closed.
+       *
+       *  If any operations fail, this function also fails.
+      */
+      __filebuf_type*
+      close() throw();
+
+    protected:
+      void
+      _M_allocate_internal_buffer();
+
+      void
+      _M_destroy_internal_buffer() throw();
+
+      // [27.8.1.4] overridden virtual functions
+      virtual streamsize
+      showmanyc();
+
+      // Stroustrup, 1998, p. 628
+      // underflow() and uflow() functions are called to get the next
+      // charater from the real input source when the buffer is empty.
+      // Buffered input uses underflow()
+
+      virtual int_type
+      underflow();
+
+      virtual int_type
+      pbackfail(int_type __c = _Traits::eof());
+
+      // Stroustrup, 1998, p 648
+      // The overflow() function is called to transfer characters to the
+      // real output destination when the buffer is full. A call to
+      // overflow(c) outputs the contents of the buffer plus the
+      // character c.
+      // 27.5.2.4.5
+      // Consume some sequence of the characters in the pending sequence.
+      virtual int_type
+      overflow(int_type __c = _Traits::eof());
+
+      // Convert internal byte sequence to external, char-based
+      // sequence via codecvt.
+      bool
+      _M_convert_to_external(char_type*, streamsize);
+
+      /**
+       *  @brief  Manipulates the buffer.
+       *  @param  s  Pointer to a buffer area.
+       *  @param  n  Size of @a s.
+       *  @return  @c this
+       *
+       *  If no file has been opened, and both @a s and @a n are zero, then
+       *  the stream becomes unbuffered.  Otherwise, @c s is used as a
+       *  buffer; see
+       *  http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2
+       *  for more.
+      */
+      virtual __streambuf_type*
+      setbuf(char_type* __s, streamsize __n);
+
+      virtual pos_type
+      seekoff(off_type __off, ios_base::seekdir __way,
+	      ios_base::openmode __mode = ios_base::in | ios_base::out);
+
+      virtual pos_type
+      seekpos(pos_type __pos,
+	      ios_base::openmode __mode = ios_base::in | ios_base::out);
+
+      // Common code for seekoff and seekpos
+      pos_type
+      _M_seek(off_type __off, ios_base::seekdir __way, __state_type __state);
+
+      virtual int
+      sync();
+
+      virtual void
+      imbue(const locale& __loc);
+
+      virtual streamsize
+      xsgetn(char_type* __s, streamsize __n);
+
+      virtual streamsize
+      xsputn(const char_type* __s, streamsize __n);
+
+      // Flushes output buffer, then writes unshift sequence.
+      bool
+      _M_terminate_output();
+
+      /**
+       *  @if maint 
+       *  This function sets the pointers of the internal buffer, both get
+       *  and put areas. Typically:
+       *
+       *   __off == egptr() - eback() upon underflow/uflow ('read' mode);
+       *   __off == 0 upon overflow ('write' mode);
+       *   __off == -1 upon open, setbuf, seekoff/pos ('uncommitted' mode).
+       * 
+       *  NB: epptr() - pbase() == _M_buf_size - 1, since _M_buf_size
+       *  reflects the actual allocated memory and the last cell is reserved
+       *  for the overflow char of a full put area.
+       *  @endif
+      */
+      void
+      _M_set_buffer(streamsize __off)
+      {
+ 	const bool __testin = _M_mode & ios_base::in;
+ 	const bool __testout = _M_mode & ios_base::out;
+	
+	if (__testin && __off > 0)
+	  this->setg(_M_buf, _M_buf, _M_buf + __off);
+	else
+	  this->setg(_M_buf, _M_buf, _M_buf);
+
+	if (__testout && __off == 0 && _M_buf_size > 1 )
+	  this->setp(_M_buf, _M_buf + _M_buf_size - 1);
+	else
+	  this->setp(NULL, NULL);
+      }
+    };
+
+  // [27.8.1.5] Template class basic_ifstream
+  /**
+   *  @brief  Controlling input for files.
+   *
+   *  This class supports reading from named files, using the inherited
+   *  functions from std::basic_istream.  To control the associated
+   *  sequence, an instance of std::basic_filebuf is used, which this page
+   *  refers to as @c sb.
+  */
+  template<typename _CharT, typename _Traits>
+    class basic_ifstream : public basic_istream<_CharT, _Traits>
+    {
+    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;
+
+      // Non-standard types:
+      typedef basic_filebuf<char_type, traits_type> 	__filebuf_type;
+      typedef basic_istream<char_type, traits_type>	__istream_type;
+
+    private:
+      __filebuf_type	_M_filebuf;
+
+    public:
+      // Constructors/Destructors:
+      /**
+       *  @brief  Default constructor.
+       *
+       *  Initializes @c sb using its default constructor, and passes
+       *  @c &sb to the base class initializer.  Does not open any files
+       *  (you haven't given it a filename to open).
+      */
+      basic_ifstream() : __istream_type(), _M_filebuf()
+      { this->init(&_M_filebuf); }
+
+      /**
+       *  @brief  Create an input file stream.
+       *  @param  s  Null terminated string specifying the filename.
+       *  @param  mode  Open file in specified mode (see std::ios_base).
+       *
+       *  @c ios_base::in is automatically included in @a mode.
+       *
+       *  Tip:  When using std::string to hold the filename, you must use
+       *  .c_str() before passing it to this constructor.
+      */
+      explicit
+      basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in)
+      : __istream_type(), _M_filebuf()
+      {
+	this->init(&_M_filebuf);
+	this->open(__s, __mode);
+      }
+
+      /**
+       *  @brief  The destructor does nothing.
+       *
+       *  The file is closed by the filebuf object, not the formatting
+       *  stream.
+      */
+      ~basic_ifstream()
+      { }
+
+      // Members:
+      /**
+       *  @brief  Accessing the underlying buffer.
+       *  @return  The current basic_filebuf buffer.
+       *
+       *  This hides both signatures of std::basic_ios::rdbuf().
+      */
+      __filebuf_type*
+      rdbuf() const
+      { return const_cast<__filebuf_type*>(&_M_filebuf); }
+
+      /**
+       *  @brief  Wrapper to test for an open file.
+       *  @return  @c rdbuf()->is_open()
+      */
+      bool
+      is_open()
+      { return _M_filebuf.is_open(); }
+
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 365. Lack of const-qualification in clause 27
+      bool
+      is_open() const
+      { return _M_filebuf.is_open(); }
+
+      /**
+       *  @brief  Opens an external file.
+       *  @param  s  The name of the file.
+       *  @param  mode  The open mode flags.
+       *
+       *  Calls @c std::basic_filebuf::open(s,mode|in).  If that function
+       *  fails, @c failbit is set in the stream's error state.
+       *
+       *  Tip:  When using std::string to hold the filename, you must use
+       *  .c_str() before passing it to this constructor.
+      */
+      void
+      open(const char* __s, ios_base::openmode __mode = ios_base::in)
+      {
+	if (!_M_filebuf.open(__s, __mode | ios_base::in))
+	  this->setstate(ios_base::failbit);
+	else
+	  // _GLIBCXX_RESOLVE_LIB_DEFECTS
+	  // 409. Closing an fstream should clear error state
+	  this->clear();
+      }
+
+      /**
+       *  @brief  Close the file.
+       *
+       *  Calls @c std::basic_filebuf::close().  If that function
+       *  fails, @c failbit is set in the stream's error state.
+      */
+      void
+      close()
+      {
+	if (!_M_filebuf.close())
+	  this->setstate(ios_base::failbit);
+      }
+    };
+
+
+  // [27.8.1.8] Template class basic_ofstream
+  /**
+   *  @brief  Controlling output for files.
+   *
+   *  This class supports reading from named files, using the inherited
+   *  functions from std::basic_ostream.  To control the associated
+   *  sequence, an instance of std::basic_filebuf is used, which this page
+   *  refers to as @c sb.
+  */
+  template<typename _CharT, typename _Traits>
+    class basic_ofstream : public basic_ostream<_CharT,_Traits>
+    {
+    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;
+
+      // Non-standard types:
+      typedef basic_filebuf<char_type, traits_type> 	__filebuf_type;
+      typedef basic_ostream<char_type, traits_type>	__ostream_type;
+
+    private:
+      __filebuf_type	_M_filebuf;
+
+    public:
+      // Constructors:
+      /**
+       *  @brief  Default constructor.
+       *
+       *  Initializes @c sb using its default constructor, and passes
+       *  @c &sb to the base class initializer.  Does not open any files
+       *  (you haven't given it a filename to open).
+      */
+      basic_ofstream(): __ostream_type(), _M_filebuf()
+      { this->init(&_M_filebuf); }
+
+      /**
+       *  @brief  Create an output file stream.
+       *  @param  s  Null terminated string specifying the filename.
+       *  @param  mode  Open file in specified mode (see std::ios_base).
+       *
+       *  @c ios_base::out|ios_base::trunc is automatically included in
+       *  @a mode.
+       *
+       *  Tip:  When using std::string to hold the filename, you must use
+       *  .c_str() before passing it to this constructor.
+      */
+      explicit
+      basic_ofstream(const char* __s,
+		     ios_base::openmode __mode = ios_base::out|ios_base::trunc)
+      : __ostream_type(), _M_filebuf()
+      {
+	this->init(&_M_filebuf);
+	this->open(__s, __mode);
+      }
+
+      /**
+       *  @brief  The destructor does nothing.
+       *
+       *  The file is closed by the filebuf object, not the formatting
+       *  stream.
+      */
+      ~basic_ofstream()
+      { }
+
+      // Members:
+      /**
+       *  @brief  Accessing the underlying buffer.
+       *  @return  The current basic_filebuf buffer.
+       *
+       *  This hides both signatures of std::basic_ios::rdbuf().
+      */
+      __filebuf_type*
+      rdbuf() const
+      { return const_cast<__filebuf_type*>(&_M_filebuf); }
+
+      /**
+       *  @brief  Wrapper to test for an open file.
+       *  @return  @c rdbuf()->is_open()
+      */
+      bool
+      is_open()
+      { return _M_filebuf.is_open(); }
+
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 365. Lack of const-qualification in clause 27
+      bool
+      is_open() const
+      { return _M_filebuf.is_open(); }
+
+      /**
+       *  @brief  Opens an external file.
+       *  @param  s  The name of the file.
+       *  @param  mode  The open mode flags.
+       *
+       *  Calls @c std::basic_filebuf::open(s,mode|out|trunc).  If that
+       *  function fails, @c failbit is set in the stream's error state.
+       *
+       *  Tip:  When using std::string to hold the filename, you must use
+       *  .c_str() before passing it to this constructor.
+      */
+      void
+      open(const char* __s,
+	   ios_base::openmode __mode = ios_base::out | ios_base::trunc)
+      {
+	if (!_M_filebuf.open(__s, __mode | ios_base::out))
+	  this->setstate(ios_base::failbit);
+	else
+	  // _GLIBCXX_RESOLVE_LIB_DEFECTS
+	  // 409. Closing an fstream should clear error state
+	  this->clear();
+      }
+
+      /**
+       *  @brief  Close the file.
+       *
+       *  Calls @c std::basic_filebuf::close().  If that function
+       *  fails, @c failbit is set in the stream's error state.
+      */
+      void
+      close()
+      {
+	if (!_M_filebuf.close())
+	  this->setstate(ios_base::failbit);
+      }
+    };
+
+
+  // [27.8.1.11] Template class basic_fstream
+  /**
+   *  @brief  Controlling intput and output for files.
+   *
+   *  This class supports reading from and writing to named files, using
+   *  the inherited functions from std::basic_iostream.  To control the
+   *  associated sequence, an instance of std::basic_filebuf is used, which
+   *  this page refers to as @c sb.
+  */
+  template<typename _CharT, typename _Traits>
+    class basic_fstream : public basic_iostream<_CharT, _Traits>
+    {
+    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;
+
+      // Non-standard types:
+      typedef basic_filebuf<char_type, traits_type> 	__filebuf_type;
+      typedef basic_ios<char_type, traits_type>		__ios_type;
+      typedef basic_iostream<char_type, traits_type>	__iostream_type;
+
+    private:
+      __filebuf_type	_M_filebuf;
+
+    public:
+      // Constructors/destructor:
+      /**
+       *  @brief  Default constructor.
+       *
+       *  Initializes @c sb using its default constructor, and passes
+       *  @c &sb to the base class initializer.  Does not open any files
+       *  (you haven't given it a filename to open).
+      */
+      basic_fstream()
+      : __iostream_type(), _M_filebuf()
+      { this->init(&_M_filebuf); }
+
+      /**
+       *  @brief  Create an input/output file stream.
+       *  @param  s  Null terminated string specifying the filename.
+       *  @param  mode  Open file in specified mode (see std::ios_base).
+       *
+       *  Tip:  When using std::string to hold the filename, you must use
+       *  .c_str() before passing it to this constructor.
+      */
+      explicit
+      basic_fstream(const char* __s,
+		    ios_base::openmode __mode = ios_base::in | ios_base::out)
+      : __iostream_type(NULL), _M_filebuf()
+      {
+	this->init(&_M_filebuf);
+	this->open(__s, __mode);
+      }
+
+      /**
+       *  @brief  The destructor does nothing.
+       *
+       *  The file is closed by the filebuf object, not the formatting
+       *  stream.
+      */
+      ~basic_fstream()
+      { }
+
+      // Members:
+      /**
+       *  @brief  Accessing the underlying buffer.
+       *  @return  The current basic_filebuf buffer.
+       *
+       *  This hides both signatures of std::basic_ios::rdbuf().
+      */
+      __filebuf_type*
+      rdbuf() const
+      { return const_cast<__filebuf_type*>(&_M_filebuf); }
+
+      /**
+       *  @brief  Wrapper to test for an open file.
+       *  @return  @c rdbuf()->is_open()
+      */
+      bool
+      is_open()
+      { return _M_filebuf.is_open(); }
+
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 365. Lack of const-qualification in clause 27
+      bool
+      is_open() const
+      { return _M_filebuf.is_open(); }
+
+      /**
+       *  @brief  Opens an external file.
+       *  @param  s  The name of the file.
+       *  @param  mode  The open mode flags.
+       *
+       *  Calls @c std::basic_filebuf::open(s,mode).  If that
+       *  function fails, @c failbit is set in the stream's error state.
+       *
+       *  Tip:  When using std::string to hold the filename, you must use
+       *  .c_str() before passing it to this constructor.
+      */
+      void
+      open(const char* __s,
+	   ios_base::openmode __mode = ios_base::in | ios_base::out)
+      {
+	if (!_M_filebuf.open(__s, __mode))
+	  this->setstate(ios_base::failbit);
+	else
+	  // _GLIBCXX_RESOLVE_LIB_DEFECTS
+	  // 409. Closing an fstream should clear error state
+	  this->clear();
+      }
+
+      /**
+       *  @brief  Close the file.
+       *
+       *  Calls @c std::basic_filebuf::close().  If that function
+       *  fails, @c failbit is set in the stream's error state.
+      */
+      void
+      close()
+      {
+	if (!_M_filebuf.close())
+	  this->setstate(ios_base::failbit);
+      }
+    };
+
+_GLIBCXX_END_NAMESPACE
+
+#ifndef _GLIBCXX_EXPORT_TEMPLATE
+# include <bits/fstream.tcc>
+#endif
+
+#endif /* _GLIBCXX_FSTREAM */