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TBE/MinGW/include/c++/3.2.3/bits/ostream.tcc

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+// ostream classes -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+// 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.
+
+//
+// ISO C++ 14882: 27.6.2  Output streams
+//
+
+#pragma GCC system_header
+
+#include <locale>
+
+namespace std 
+{
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>::sentry::
+    sentry(basic_ostream<_CharT,_Traits>& __os)
+    : _M_ok(__os.good()), _M_os(__os)
+    {
+      // XXX MT 
+      if (_M_ok && __os.tie())
+	__os.tie()->flush();  
+    }
+  
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::
+    operator<<(__ostream_type& (*__pf)(__ostream_type&))
+    {
+      sentry __cerb(*this);
+      if (__cerb)
+	{ 
+	  try 
+	    { __pf(*this); }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.2.5.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+  
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::
+    operator<<(__ios_type& (*__pf)(__ios_type&))
+    {
+      sentry __cerb(*this);
+      if (__cerb)
+	{ 
+	  try 
+	    { __pf(*this); }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.2.5.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::
+    operator<<(ios_base& (*__pf)(ios_base&))
+    {
+      sentry __cerb(*this);
+      if (__cerb)
+	{ 
+	  try 
+	    { __pf(*this); }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.2.5.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(__streambuf_type* __sbin)
+    {
+      sentry __cerb(*this);
+      if (__cerb && __sbin)
+	{
+	  try
+	    {
+	      if (!__copy_streambufs(*this, __sbin, this->rdbuf()))
+		this->setstate(ios_base::failbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.2.5.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      else if (!__sbin)
+	this->setstate(ios_base::badbit);
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(bool __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      if (_M_check_facet(_M_fnumput))
+		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
+		  this->setstate(ios_base::badbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(long __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      char_type __c = this->fill();
+	      ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
+	      if (_M_check_facet(_M_fnumput))
+		{
+		  bool __b = false;
+		  if ((__fmt & ios_base::oct) || (__fmt & ios_base::hex))
+		    {
+		      unsigned long __l = static_cast<unsigned long>(__n);
+		      __b = _M_fnumput->put(*this, *this, __c, __l).failed();
+		    }
+		  else
+		    __b = _M_fnumput->put(*this, *this, __c, __n).failed();
+		  if (__b)  
+		    this->setstate(ios_base::badbit);
+		}
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(unsigned long __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      if (_M_check_facet(_M_fnumput))
+		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
+		  this->setstate(ios_base::badbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+#ifdef _GLIBCPP_USE_LONG_LONG
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(long long __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      char_type __c = this->fill();
+	      ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
+	      if (_M_check_facet(_M_fnumput))
+		{
+		  bool __b = false;
+		  if ((__fmt & ios_base::oct) || (__fmt & ios_base::hex))
+		    {
+		      unsigned long long __l;
+		      __l = static_cast<unsigned long long>(__n);
+		      __b = _M_fnumput->put(*this, *this, __c, __l).failed();
+		    }
+		  else
+		    __b = _M_fnumput->put(*this, *this, __c, __n).failed();
+		  if (__b)  
+		    this->setstate(ios_base::badbit);
+		}
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(unsigned long long __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      if (_M_check_facet(_M_fnumput))
+		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
+		  this->setstate(ios_base::badbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+#endif
+  
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(double __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      if (_M_check_facet(_M_fnumput))
+		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
+		  this->setstate(ios_base::badbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(long double __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      if (_M_check_facet(_M_fnumput))
+		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
+		  this->setstate(ios_base::badbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>& 
+    basic_ostream<_CharT, _Traits>::operator<<(const void* __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  try 
+	    {
+	      if (_M_check_facet(_M_fnumput))
+		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
+		  this->setstate(ios_base::badbit);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      this->setstate(ios_base::badbit);
+	      if ((this->exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::put(char_type __c)
+    { 
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  int_type __put = rdbuf()->sputc(__c); 
+	  if (traits_type::eq_int_type(__put, traits_type::eof()))
+	    this->setstate(ios_base::badbit);
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::write(const _CharT* __s, streamsize __n)
+    {
+      sentry __cerb(*this);
+      if (__cerb)
+	{
+	  streamsize __put = this->rdbuf()->sputn(__s, __n);
+	  if ( __put != __n)
+	    this->setstate(ios_base::badbit);
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::flush()
+    {
+      sentry __cerb(*this);
+      if (__cerb) 
+	{
+	  if (this->rdbuf() && this->rdbuf()->pubsync() == -1)
+	    this->setstate(ios_base::badbit);
+	}
+      return *this;
+    }
+  
+  template<typename _CharT, typename _Traits>
+    typename basic_ostream<_CharT, _Traits>::pos_type
+    basic_ostream<_CharT, _Traits>::tellp()
+    {
+      pos_type __ret = pos_type(-1);
+      if (!this->fail())
+	__ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out);
+      return __ret;
+    }
+
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::seekp(pos_type __pos)
+    {
+      if (!this->fail())
+	{
+#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+// 136.  seekp, seekg setting wrong streams?
+	  pos_type __err = this->rdbuf()->pubseekpos(__pos, ios_base::out);
+
+// 129. Need error indication from seekp() and seekg()
+	  if (__err == pos_type(off_type(-1)))
+	    this->setstate(ios_base::failbit);
+#endif
+	}
+      return *this;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    basic_ostream<_CharT, _Traits>::
+    seekp(off_type __off, ios_base::seekdir __d)
+    {
+      if (!this->fail())
+	{
+#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+// 136.  seekp, seekg setting wrong streams?
+	  pos_type __err = this->rdbuf()->pubseekoff(__off, __d, 
+						     ios_base::out);
+
+// 129. Need error indication from seekp() and seekg()
+	  if (__err == pos_type(off_type(-1)))
+	    this->setstate(ios_base::failbit);
+#endif
+	}
+      return *this;
+    }
+
+  // 27.6.2.5.4 Character inserters.
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
+    {
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb)
+	{
+	  try 
+	    {
+	      streamsize __w = __out.width();
+	      _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * (__w + 1)));
+	      __pads[0] = __c;
+	      streamsize __len = 1;
+	      if (__w > __len)
+		{
+		  __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, 
+						 &__c, __w, __len, false);
+		  __len = __w;
+		}
+	      __out.write(__pads, __len);
+	      __out.width(0);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      __out.setstate(ios_base::badbit);
+	      if ((__out.exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return __out;
+    }
+  
+  // Specializations.
+  template <class _Traits> 
+    basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, char __c)
+    {
+      typedef basic_ostream<char, _Traits> __ostream_type;
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb)
+	{
+	  try 
+	    {
+	      streamsize __w = __out.width();
+	      char* __pads = static_cast<char*>(__builtin_alloca(__w + 1));
+	      __pads[0] = __c;
+	      streamsize __len = 1;
+	      if (__w > __len)
+		{
+		  __pad<char, _Traits>::_S_pad(__out, __out.fill(), __pads, 
+					       &__c, __w, __len, false);
+		  __len = __w;
+		}
+	      __out.write(__pads, __len);
+	      __out.width(0);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      __out.setstate(ios_base::badbit);
+	      if ((__out.exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      return __out;
+     }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
+    {
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb && __s)
+	{
+	  try 
+	    {
+	      streamsize __w = __out.width();
+	      _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __w));
+	      streamsize __len = static_cast<streamsize>(_Traits::length(__s));
+	      if (__w > __len)
+		{
+		  __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, 
+						 __s, __w, __len, false);
+		  __s = __pads;
+		  __len = __w;
+		}
+	      __out.write(__s, __len);
+	      __out.width(0);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      __out.setstate(ios_base::badbit);
+	      if ((__out.exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      else if (!__s)
+	__out.setstate(ios_base::badbit);
+      return __out;
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
+    {
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+// 167.  Improper use of traits_type::length()
+// Note that this is only in 'Review' status.
+      typedef char_traits<char>		     __traits_type;
+#endif
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb && __s)
+	{
+	  size_t __clen = __traits_type::length(__s);
+	  _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * (__clen + 1)));
+	  for (size_t  __i = 0; __i < __clen; ++__i)
+	    __ws[__i] = __out.widen(__s[__i]);
+	  _CharT* __str = __ws;
+	  
+	  try 
+	    {
+	      streamsize __len = static_cast<streamsize>(__clen);
+	      streamsize __w = __out.width();
+	      _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __w));
+	      
+	      if (__w > __len)
+		{
+		  __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, 
+						 __ws, __w, __len, false);
+		  __str = __pads;
+		  __len = __w;
+		}
+	      __out.write(__str, __len);
+	      __out.width(0);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      __out.setstate(ios_base::badbit);
+	      if ((__out.exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      else if (!__s)
+	__out.setstate(ios_base::badbit);
+      return __out;
+    }
+
+  // Partial specializations.
+  template<class _Traits>
+    basic_ostream<char, _Traits>&
+    operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
+    {
+      typedef basic_ostream<char, _Traits> __ostream_type;
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb && __s)
+	{
+	  try 
+	    {
+	      streamsize __w = __out.width();
+	      char* __pads = static_cast<char*>(__builtin_alloca(__w));
+	      streamsize __len = static_cast<streamsize>(_Traits::length(__s));
+
+	      if (__w > __len)
+		{
+		  __pad<char, _Traits>::_S_pad(__out, __out.fill(), __pads, 
+						 __s, __w, __len, false);
+		  __s = __pads;
+		  __len = __w;
+		}
+	      __out.write(__s, __len);
+	      __out.width(0);
+	    }
+	  catch(exception& __fail)
+	    {
+	      // 27.6.1.2.1 Common requirements.
+	      // Turn this on without causing an ios::failure to be thrown.
+	      __out.setstate(ios_base::badbit);
+	      if ((__out.exceptions() & ios_base::badbit) != 0)
+		__throw_exception_again;
+	    }
+	}
+      else if (!__s)
+	__out.setstate(ios_base::badbit);
+      return __out;
+    }
+
+  // 21.3.7.9 basic_string::operator<<
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    basic_ostream<_CharT, _Traits>&
+    operator<<(basic_ostream<_CharT, _Traits>& __out,
+	       const basic_string<_CharT, _Traits, _Alloc>& __str)
+    { 
+      typedef basic_ostream<_CharT, _Traits> __ostream_type;
+      typename __ostream_type::sentry __cerb(__out);
+      if (__cerb)
+	{
+	  const _CharT* __s = __str.data();
+	  streamsize __w = __out.width();
+	  _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __w));
+	  streamsize __len = static_cast<streamsize>(__str.size());
+#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+	  // 25. String operator<< uses width() value wrong
+#endif
+	  if (__w > __len)
+	    {
+	      __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, __s, 
+					     __w, __len, false);
+	      __s = __pads;
+	      __len = __w;
+	    }
+	  streamsize __res = __out.rdbuf()->sputn(__s, __len);
+	  __out.width(0);
+	  if (__res != __len)
+	    __out.setstate(ios_base::failbit);
+	}
+      return __out;
+    }
+
+  // Inhibit implicit instantiations for required instantiations,
+  // which are defined via explicit instantiations elsewhere.  
+  // NB:  This syntax is a GNU extension.
+  extern template class basic_ostream<char>;
+  extern template ostream& endl(ostream&);
+  extern template ostream& ends(ostream&);
+  extern template ostream& flush(ostream&);
+  extern template ostream& operator<<(ostream&, char);
+  extern template ostream& operator<<(ostream&, unsigned char);
+  extern template ostream& operator<<(ostream&, signed char);
+  extern template ostream& operator<<(ostream&, const char*);
+  extern template ostream& operator<<(ostream&, const unsigned char*);
+  extern template ostream& operator<<(ostream&, const signed char*);
+
+#ifdef _GLIBCPP_USE_WCHAR_T
+  extern template class basic_ostream<wchar_t>;
+  extern template wostream& endl(wostream&);
+  extern template wostream& ends(wostream&);
+  extern template wostream& flush(wostream&);
+  extern template wostream& operator<<(wostream&, wchar_t);
+  extern template wostream& operator<<(wostream&, char);
+  extern template wostream& operator<<(wostream&, const wchar_t*);
+  extern template wostream& operator<<(wostream&, const char*);
+#endif
+} // namespace std