gcc/libstdc++-v3/src/compatibility.cc

// Compatibility symbols for previous versions -*- C++ -*-

// Copyright (C) 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// 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.

#include <bits/c++config.h>

#if defined(_GLIBCXX_SYMVER) && defined(PIC)
# define _GLIBCXX_SYMVER_COMPATIBILITY 1
#endif

#include <string>
#include <istream>
#include <fstream>
#include <sstream>

namespace std
{
  // std::istream ignore explicit specializations.
#if defined(_GLIBCXX_SYMVER) && defined(PIC)
  template<>
    basic_istream<char>&
    basic_istream<char>::ignore(streamsize __n) 
#ifdef _GLIBCXX_PTRDIFF_T_IS_INT
    asm ("_W_ZNSi6ignoreEi");
#else
    asm ("_W_ZNSi6ignoreEl");
#endif

#ifdef _GLIBCXX_USE_WCHAR_T
  template<>
    basic_istream<wchar_t>&
    basic_istream<wchar_t>::ignore(streamsize __n)
#ifdef _GLIBCXX_PTRDIFF_T_IS_INT
     asm ("_W_ZNSt13basic_istreamIwSt11char_traitsIwEE6ignoreEi");
#else
     asm ("_W_ZNSt13basic_istreamIwSt11char_traitsIwEE6ignoreEl");
#endif
#endif
#endif // _GLIBCXX_SYMVER && PIC

  template<>
    basic_istream<char>&
    basic_istream<char>::
    ignore(streamsize __n)
    {
      if (__n == 1)
	return ignore();
      
      _M_gcount = 0;
      sentry __cerb(*this, true);
      if (__cerb && __n > 0)
	{
	  ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
	  try
	    {
	      const int_type __eof = traits_type::eof();
	      __streambuf_type* __sb = this->rdbuf();
	      int_type __c = __sb->sgetc();

	      // See comment in istream.tcc.
	      bool __large_ignore = false;
	      while (true)
		{
		  while (_M_gcount < __n
			 && !traits_type::eq_int_type(__c, __eof))
		    {
		      streamsize __size = std::min(streamsize(__sb->egptr()
							      - __sb->gptr()),
						   streamsize(__n - _M_gcount));
		      if (__size > 1)
			{
			  __sb->gbump(__size);
			  _M_gcount += __size;
			  __c = __sb->sgetc();
			}
		      else
			{
			  ++_M_gcount;
			  __c = __sb->snextc();
			} 
		    }
		  if (__n == numeric_limits<streamsize>::max()
		      && !traits_type::eq_int_type(__c, __eof))
		    {
		      _M_gcount = numeric_limits<streamsize>::min();
		      __large_ignore = true;
		    }
		  else
		    break;
		}

	      if (__large_ignore)
		_M_gcount = numeric_limits<streamsize>::max();

	      if (traits_type::eq_int_type(__c, __eof))
		__err |= ios_base::eofbit;
	    }
	  catch(...)
	    { this->_M_setstate(ios_base::badbit); }
	  if (__err)
	    this->setstate(__err);
	}
      return *this;
    } 

#ifdef _GLIBCXX_USE_WCHAR_T
  template<>
    basic_istream<wchar_t>&
    basic_istream<wchar_t>::
    ignore(streamsize __n)
    {
      if (__n == 1)
	return ignore();
      
      _M_gcount = 0;
      sentry __cerb(*this, true);
      if (__cerb && __n > 0)
	{
	  ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
	  try
	    {
	      const int_type __eof = traits_type::eof();
	      __streambuf_type* __sb = this->rdbuf();
	      int_type __c = __sb->sgetc();

	      bool __large_ignore = false;
	      while (true)
		{
		  while (_M_gcount < __n
			 && !traits_type::eq_int_type(__c, __eof))
		    {
		      streamsize __size = std::min(streamsize(__sb->egptr()
							      - __sb->gptr()),
						   streamsize(__n - _M_gcount));
		      if (__size > 1)
			{
			  __sb->gbump(__size);
			  _M_gcount += __size;
			  __c = __sb->sgetc();
			}
		      else
			{
			  ++_M_gcount;
			  __c = __sb->snextc();
			}
		    }
		  if (__n == numeric_limits<streamsize>::max()
		      && !traits_type::eq_int_type(__c, __eof))
		    {
		      _M_gcount = numeric_limits<streamsize>::min();
		      __large_ignore = true;
		    }
		  else
		    break;
		}

	      if (__large_ignore)
		_M_gcount = numeric_limits<streamsize>::max();

	      if (traits_type::eq_int_type(__c, __eof))
		__err |= ios_base::eofbit;
	    }
	  catch(...)
	    { this->_M_setstate(ios_base::badbit); }
	  if (__err)
	    this->setstate(__err);
	}
      return *this;
    }
#endif
}

// NB: These symbols renames should go into the shared library only,
// and only those shared libraries that support versioning.
#if defined(_GLIBCXX_SYMVER) && defined(PIC)

/* gcc-3.4.4
_ZNSt19istreambuf_iteratorIcSt11char_traitsIcEEppEv
_ZNSt19istreambuf_iteratorIwSt11char_traitsIwEEppEv
 */
namespace std
{
  template
    istreambuf_iterator<char>&
    istreambuf_iterator<char>::operator++();

#ifdef _GLIBCXX_USE_WCHAR_T
  template
    istreambuf_iterator<wchar_t>&
    istreambuf_iterator<wchar_t>::operator++();
#endif
} // namespace std

/* gcc-4.0.0
_ZNSs4_Rep26_M_set_length_and_sharableEj
_ZNSs7_M_copyEPcPKcj
_ZNSs7_M_moveEPcPKcj
_ZNSs9_M_assignEPcjc
_ZNKSs11_M_disjunctEPKc
_ZNKSs15_M_check_lengthEjjPKc
_ZNSbIwSt11char_traitsIwESaIwEE4_Rep26_M_set_length_and_sharableEj
_ZNSbIwSt11char_traitsIwESaIwEE7_M_copyEPwPKwj
_ZNSbIwSt11char_traitsIwESaIwEE7_M_moveEPwPKwj
_ZNSbIwSt11char_traitsIwESaIwEE9_M_assignEPwjw
_ZNKSbIwSt11char_traitsIwESaIwEE11_M_disjunctEPKw
_ZNKSbIwSt11char_traitsIwESaIwEE15_M_check_lengthEjjPKc

_ZNKSt13basic_fstreamIcSt11char_traitsIcEE7is_openEv
_ZNKSt13basic_fstreamIwSt11char_traitsIwEE7is_openEv
_ZNKSt14basic_ifstreamIcSt11char_traitsIcEE7is_openEv
_ZNKSt14basic_ifstreamIwSt11char_traitsIwEE7is_openEv
_ZNKSt14basic_ofstreamIcSt11char_traitsIcEE7is_openEv
_ZNKSt14basic_ofstreamIwSt11char_traitsIwEE7is_openEv

_ZNSi6ignoreEi
_ZNSi6ignoreEv
_ZNSt13basic_istreamIwSt11char_traitsIwEE6ignoreEi
_ZNSt13basic_istreamIwSt11char_traitsIwEE6ignoreEv

_ZNSt11char_traitsIcE2eqERKcS2_
_ZNSt11char_traitsIwE2eqERKwS2_
 */
namespace std
{
  // std::char_traits is explicitly specialized
  bool (* __p1)(const char&, const char&) = &char_traits<char>::eq;

  // std::string
  template
    void
    basic_string<char>::_M_copy(char*, const char*, size_t);

  template
    void
    basic_string<char>::_M_move(char*, const char*, size_t);

  template
    void
    basic_string<char>::_M_assign(char*, size_t, char);

  template
    bool
    basic_string<char>::_M_disjunct(const char*) const;

  template
    void
    basic_string<char>::_M_check_length(size_t, size_t, const char*) const;

  template
    void
    basic_string<char>::_Rep::_M_set_length_and_sharable(size_t);


  // std::istream
  template
    basic_istream<char>&
    basic_istream<char>::ignore(); 

  template
    bool
    basic_fstream<char>::is_open() const;

  template
    bool
    basic_ifstream<char>::is_open() const;

  template
    bool
    basic_ofstream<char>::is_open() const;

#ifdef _GLIBCXX_USE_WCHAR_T
  bool (* __p2)(const wchar_t&, const wchar_t&) = &char_traits<wchar_t>::eq;

  // std::wstring
  template
    void
    basic_string<wchar_t>::_M_copy(wchar_t*, const wchar_t*, size_t);

  template
    void
    basic_string<wchar_t>::_M_move(wchar_t*, const wchar_t*, size_t);

  template
    void
    basic_string<wchar_t>::_M_assign(wchar_t*, size_t, wchar_t);

  template
    bool
    basic_string<wchar_t>::_M_disjunct(const wchar_t*) const;

  template
    void
    basic_string<wchar_t>::_M_check_length(size_t, size_t, 
					   const char*) const;

  template
    void
    basic_string<wchar_t>::_Rep::_M_set_length_and_sharable(size_t);

  template
    basic_istream<wchar_t>&
    basic_istream<wchar_t>::ignore(); 

  template
    bool
    basic_fstream<wchar_t>::is_open() const;

  template
    bool
    basic_ifstream<wchar_t>::is_open() const;

  template
    bool
    basic_ofstream<wchar_t>::is_open() const;
#endif
}

// The rename syntax for default exported names is
//   asm (".symver name1,exportedname@GLIBCXX_3.4")
//   asm (".symver name2,exportedname@@GLIBCXX_3.4.5")
// In the future, GLIBCXX_ABI > 6 should remove all uses of
// _GLIBCXX_*_SYMVER macros in this file.

#define _GLIBCXX_3_4_SYMVER(name) \
   extern "C" void \
   _X##name() \
   __attribute__ ((alias(#name))); \
   asm (".symver " "_X" #name "," #name "@GLIBCXX_3.4");

#define _GLIBCXX_3_4_5_SYMVER(name) \
   extern "C" void \
   _Y##name() \
   __attribute__ ((alias(#name))); \
   asm (".symver " "_Y" #name  "," #name "@@GLIBCXX_3.4.5");

#define _GLIBCXX_3_4_SYMVER_SPECIAL(name) \
   extern "C" void \
   _X##name() \
   __attribute__ ((alias("_W" #name))); \
   asm (".symver " "_X" #name "," #name "@GLIBCXX_3.4");

#define _GLIBCXX_3_4_5_SYMVER_SPECIAL(name) \
   extern "C" void \
   _Y##name() \
   __attribute__ ((alias("_W" #name))); \
   asm (".symver " "_Y" #name  "," #name "@@GLIBCXX_3.4.5");

#define _GLIBCXX_ASM_SYMVER(cur, old, version) \
   asm (".symver " #cur "," #old "@@" #version);

#define _GLIBCXX_APPLY_SYMVER _GLIBCXX_3_4_SYMVER
#define _GLIBCXX_APPLY_SYMVER_SPECIAL _GLIBCXX_3_4_SYMVER_SPECIAL
#include <bits/compatibility.h>
#undef _GLIBCXX_APPLY_SYMVER
#undef _GLIBCXX_APPLY_SYMVER_SPECIAL

#define _GLIBCXX_APPLY_SYMVER _GLIBCXX_3_4_5_SYMVER
#define _GLIBCXX_APPLY_SYMVER_SPECIAL _GLIBCXX_3_4_5_SYMVER_SPECIAL
#include <bits/compatibility.h>
#undef _GLIBCXX_APPLY_SYMVER
#undef _GLIBCXX_APPLY_SYMVER_SPECIAL

#endif