ostream.tcc

00001 // ostream classes -*- C++ -*-
00002 
00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
00004 // Free Software Foundation, Inc.
00005 //
00006 // This file is part of the GNU ISO C++ Library.  This library is free
00007 // software; you can redistribute it and/or modify it under the
00008 // terms of the GNU General Public License as published by the
00009 // Free Software Foundation; either version 2, or (at your option)
00010 // any later version.
00011 
00012 // This library is distributed in the hope that it will be useful,
00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 // GNU General Public License for more details.
00016 
00017 // You should have received a copy of the GNU General Public License along
00018 // with this library; see the file COPYING.  If not, write to the Free
00019 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00020 // USA.
00021 
00022 // As a special exception, you may use this file as part of a free software
00023 // library without restriction.  Specifically, if other files instantiate
00024 // templates or use macros or inline functions from this file, or you compile
00025 // this file and link it with other files to produce an executable, this
00026 // file does not by itself cause the resulting executable to be covered by
00027 // the GNU General Public License.  This exception does not however
00028 // invalidate any other reasons why the executable file might be covered by
00029 // the GNU General Public License.
00030 
00031 //
00032 // ISO C++ 14882: 27.6.2  Output streams
00033 //
00034 
00035 #pragma GCC system_header
00036 
00037 #include <locale>
00038 
00039 namespace std 
00040 {
00041   template<typename _CharT, typename _Traits>
00042     basic_ostream<_CharT, _Traits>::sentry::
00043     sentry(basic_ostream<_CharT, _Traits>& __os)
00044     : _M_os(__os)
00045     {
00046       // XXX MT
00047       if (__os.tie() && __os.good())
00048     __os.tie()->flush();
00049 
00050       if (__os.good())
00051     _M_ok = true;
00052       else
00053     {
00054       _M_ok = false;
00055       __os.setstate(ios_base::failbit);
00056     }
00057     }
00058   
00059   template<typename _CharT, typename _Traits>
00060     basic_ostream<_CharT, _Traits>& 
00061     basic_ostream<_CharT, _Traits>::
00062     operator<<(__ostream_type& (*__pf)(__ostream_type&))
00063     {
00064       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00065       // DR 60. What is a formatted input function?
00066       // The inserters for manipulators are *not* formatted output functions.
00067       return __pf(*this);
00068     }
00069   
00070   template<typename _CharT, typename _Traits>
00071     basic_ostream<_CharT, _Traits>& 
00072     basic_ostream<_CharT, _Traits>::
00073     operator<<(__ios_type& (*__pf)(__ios_type&))
00074     {
00075       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00076       // DR 60. What is a formatted input function?
00077       // The inserters for manipulators are *not* formatted output functions.
00078       __pf(*this);
00079       return *this;
00080     }
00081 
00082   template<typename _CharT, typename _Traits>
00083     basic_ostream<_CharT, _Traits>& 
00084     basic_ostream<_CharT, _Traits>::
00085     operator<<(ios_base& (*__pf)(ios_base&))
00086     {
00087       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00088       // DR 60. What is a formatted input function?
00089       // The inserters for manipulators are *not* formatted output functions.
00090       __pf(*this);
00091       return *this;
00092     }
00093 
00094   template<typename _CharT, typename _Traits>
00095     basic_ostream<_CharT, _Traits>& 
00096     basic_ostream<_CharT, _Traits>::
00097     operator<<(bool __n)
00098     {
00099       sentry __cerb(*this);
00100       if (__cerb) 
00101     {
00102       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00103       try 
00104         {
00105           _M_check_facet(this->_M_fnumput);
00106           const __numput_type& __np = *this->_M_fnumput;
00107           if (__np.put(*this, *this, this->fill(), __n).failed())
00108         __err |= ios_base::badbit;
00109         }
00110       catch(...)
00111         { this->_M_setstate(ios_base::badbit); }
00112       if (__err)
00113         this->setstate(__err);
00114     }
00115       return *this;
00116     }
00117 
00118   template<typename _CharT, typename _Traits>
00119     basic_ostream<_CharT, _Traits>& 
00120     basic_ostream<_CharT, _Traits>::
00121     operator<<(long __n)
00122     {
00123       sentry __cerb(*this);
00124       if (__cerb) 
00125     {
00126       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00127       try 
00128         {
00129           bool __b = false;
00130           char_type __c = this->fill();
00131           ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
00132           _M_check_facet(this->_M_fnumput);
00133           const __numput_type& __np = *this->_M_fnumput;
00134           if ((__fmt & ios_base::oct) || (__fmt & ios_base::hex))
00135         {
00136           unsigned long __l = static_cast<unsigned long>(__n);
00137           __b = __np.put(*this, *this, __c, __l).failed();
00138         }
00139           else
00140         __b = __np.put(*this, *this, __c, __n).failed();
00141           if (__b)  
00142         __err |= ios_base::badbit;
00143         }
00144       catch(...)
00145         { this->_M_setstate(ios_base::badbit); }
00146       if (__err)
00147         this->setstate(__err);
00148     }
00149       return *this;
00150     }
00151 
00152   template<typename _CharT, typename _Traits>
00153     basic_ostream<_CharT, _Traits>& 
00154     basic_ostream<_CharT, _Traits>::
00155     operator<<(unsigned long __n)
00156     {
00157       sentry __cerb(*this);
00158       if (__cerb) 
00159     {
00160       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00161       try 
00162         {
00163           _M_check_facet(this->_M_fnumput);
00164           const __numput_type& __np = *this->_M_fnumput;
00165           if (__np.put(*this, *this, this->fill(), __n).failed())
00166         __err |= ios_base::badbit;
00167         }
00168       catch(...)
00169         { this->_M_setstate(ios_base::badbit); }
00170       if (__err)
00171         this->setstate(__err);
00172     }
00173       return *this;
00174     }
00175 
00176 #ifdef _GLIBCPP_USE_LONG_LONG
00177   template<typename _CharT, typename _Traits>
00178     basic_ostream<_CharT, _Traits>& 
00179     basic_ostream<_CharT, _Traits>::
00180     operator<<(long long __n)
00181     {
00182       sentry __cerb(*this);
00183       if (__cerb) 
00184     {
00185       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00186       try 
00187         {
00188           bool __b = false;
00189           char_type __c = this->fill();
00190           ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
00191           _M_check_facet(this->_M_fnumput);
00192           const __numput_type& __np = *this->_M_fnumput;
00193           if ((__fmt & ios_base::oct) || (__fmt & ios_base::hex))
00194         {
00195           unsigned long long __l;
00196           __l = static_cast<unsigned long long>(__n);
00197           __b = __np.put(*this, *this, __c, __l).failed();
00198         }
00199           else
00200         __b = __np.put(*this, *this, __c, __n).failed();
00201           if (__b)  
00202         __err |= ios_base::badbit;
00203         }
00204       catch(...)
00205         { this->_M_setstate(ios_base::badbit); }
00206       if (__err)
00207         this->setstate(__err);
00208     }
00209       return *this;
00210     }
00211 
00212   template<typename _CharT, typename _Traits>
00213     basic_ostream<_CharT, _Traits>& 
00214     basic_ostream<_CharT, _Traits>::
00215     operator<<(unsigned long long __n)
00216     {
00217       sentry __cerb(*this);
00218       if (__cerb) 
00219     {
00220       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00221       try 
00222         {
00223           _M_check_facet(this->_M_fnumput);
00224           const __numput_type& __np = *this->_M_fnumput;
00225           if (__np.put(*this, *this, this->fill(), __n).failed())
00226         __err |= ios_base::badbit;
00227         }
00228       catch(...)
00229         { this->_M_setstate(ios_base::badbit); }
00230       if (__err)
00231         this->setstate(__err);
00232     }
00233       return *this;
00234     }
00235 #endif
00236   
00237   template<typename _CharT, typename _Traits>
00238     basic_ostream<_CharT, _Traits>& 
00239     basic_ostream<_CharT, _Traits>::
00240     operator<<(double __n)
00241     {
00242       sentry __cerb(*this);
00243       if (__cerb) 
00244     {
00245       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00246       try 
00247         {
00248           _M_check_facet(this->_M_fnumput);
00249           const __numput_type& __np = *this->_M_fnumput;
00250           if (__np.put(*this, *this, this->fill(), __n).failed())
00251         __err |= ios_base::badbit;
00252         }
00253       catch(...)
00254         { this->_M_setstate(ios_base::badbit); }
00255       if (__err)
00256         this->setstate(__err);
00257     }
00258       return *this;
00259     }
00260   
00261   template<typename _CharT, typename _Traits>
00262     basic_ostream<_CharT, _Traits>& 
00263     basic_ostream<_CharT, _Traits>::
00264     operator<<(long double __n)
00265     {
00266       sentry __cerb(*this);
00267       if (__cerb) 
00268     {
00269       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00270       try 
00271         {
00272           _M_check_facet(this->_M_fnumput);
00273           const __numput_type& __np = *this->_M_fnumput;
00274           if (__np.put(*this, *this, this->fill(), __n).failed())
00275         __err |= ios_base::badbit;
00276         }
00277       catch(...)
00278         { this->_M_setstate(ios_base::badbit); }
00279       if (__err)
00280         this->setstate(__err);
00281     }
00282       return *this;
00283     }
00284 
00285   template<typename _CharT, typename _Traits>
00286     basic_ostream<_CharT, _Traits>& 
00287     basic_ostream<_CharT, _Traits>::
00288     operator<<(const void* __n)
00289     {
00290       sentry __cerb(*this);
00291       if (__cerb) 
00292     {
00293       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00294       try 
00295         {
00296           _M_check_facet(this->_M_fnumput);
00297           const __numput_type& __np = *this->_M_fnumput;
00298           if (__np.put(*this, *this, this->fill(), __n).failed())
00299         __err |= ios_base::badbit;
00300         }
00301       catch(...)
00302         { this->_M_setstate(ios_base::badbit); }
00303       if (__err)
00304         this->setstate(__err);
00305     }
00306       return *this;
00307     }
00308 
00309   template<typename _CharT, typename _Traits>
00310     basic_ostream<_CharT, _Traits>& 
00311     basic_ostream<_CharT, _Traits>::
00312     operator<<(__streambuf_type* __sbin)
00313     {
00314       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00315       sentry __cerb(*this);
00316       if (__cerb && __sbin)
00317     {
00318       try
00319         {
00320           if (!__copy_streambufs(*this, __sbin, this->rdbuf()))
00321         __err |= ios_base::failbit;
00322         }
00323       catch(...)
00324         { this->_M_setstate(ios_base::failbit); }
00325     }
00326       else if (!__sbin)
00327     __err |= ios_base::badbit;
00328       if (__err)
00329     this->setstate(__err);
00330       return *this;
00331     }
00332 
00333   template<typename _CharT, typename _Traits>
00334     basic_ostream<_CharT, _Traits>&
00335     basic_ostream<_CharT, _Traits>::put(char_type __c)
00336     { 
00337       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00338       // DR 60. What is a formatted input function?
00339       // basic_ostream::put(char_type) is an unformatted output function.
00340       // DR 63. Exception-handling policy for unformatted output.
00341       // Unformatted output functions should catch exceptions thrown
00342       // from streambuf members.
00343       sentry __cerb(*this);
00344       if (__cerb) 
00345     {
00346       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00347       try
00348         {
00349           int_type __put = this->rdbuf()->sputc(__c); 
00350           if (traits_type::eq_int_type(__put, traits_type::eof()))
00351         __err |= ios_base::badbit;
00352         }
00353       catch (...)
00354         { this->_M_setstate(ios_base::badbit); }
00355       if (__err)
00356         this->setstate(__err);
00357     }
00358       return *this;     
00359     }   
00360       
00361   template<typename _CharT, typename _Traits>
00362     basic_ostream<_CharT, _Traits>&
00363     basic_ostream<_CharT, _Traits>::write(const _CharT* __s, streamsize __n)
00364     {
00365       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00366       // DR 60. What is a formatted input function?
00367       // basic_ostream::write(const char_type*, streamsize) is an
00368       // unformatted output function.
00369       // DR 63. Exception-handling policy for unformatted output.
00370       // Unformatted output functions should catch exceptions thrown
00371       // from streambuf members.
00372       sentry __cerb(*this);
00373       if (__cerb)
00374     {
00375       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00376       try
00377         {
00378           streamsize __put = this->rdbuf()->sputn(__s, __n);
00379           if (__put != __n)
00380         __err |= ios_base::badbit;
00381         }
00382       catch (...)
00383         { this->_M_setstate(ios_base::badbit); }
00384       if (__err)
00385         this->setstate(__err);
00386     }
00387       return *this;
00388     }
00389 
00390   template<typename _CharT, typename _Traits>
00391     basic_ostream<_CharT, _Traits>&
00392     basic_ostream<_CharT, _Traits>::flush()
00393     {
00394       // _GLIBCXX_RESOLVE_LIB_DEFECTS
00395       // DR 60. What is a formatted input function?
00396       // basic_ostream::flush() is *not* an unformatted output function.
00397       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00398       try
00399     {
00400       if (this->rdbuf() && this->rdbuf()->pubsync() == -1)
00401         __err |= ios_base::badbit;
00402     }
00403       catch(...)
00404     { this->_M_setstate(ios_base::badbit); }
00405       if (__err)
00406     this->setstate(__err);
00407       return *this;
00408     }
00409   
00410   template<typename _CharT, typename _Traits>
00411     typename basic_ostream<_CharT, _Traits>::pos_type
00412     basic_ostream<_CharT, _Traits>::tellp()
00413     {
00414       pos_type __ret = pos_type(-1);
00415       try
00416     {
00417       if (!this->fail())
00418         __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out);
00419     }
00420       catch(...)
00421     { this->_M_setstate(ios_base::badbit); }
00422       return __ret;
00423     }
00424 
00425 
00426   template<typename _CharT, typename _Traits>
00427     basic_ostream<_CharT, _Traits>&
00428     basic_ostream<_CharT, _Traits>::seekp(pos_type __pos)
00429     {
00430       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00431       try
00432     {
00433       if (!this->fail())
00434         {
00435           // _GLIBCXX_RESOLVE_LIB_DEFECTS
00436           // 136.  seekp, seekg setting wrong streams?
00437           pos_type __p = this->rdbuf()->pubseekpos(__pos, ios_base::out);
00438           
00439           // 129. Need error indication from seekp() and seekg()
00440           if (__p == pos_type(off_type(-1)))
00441         __err |= ios_base::failbit;
00442         }
00443     }
00444       catch(...)
00445     { this->_M_setstate(ios_base::badbit); }
00446       if (__err)
00447     this->setstate(__err);
00448       return *this;
00449     }
00450 
00451   template<typename _CharT, typename _Traits>
00452     basic_ostream<_CharT, _Traits>&
00453     basic_ostream<_CharT, _Traits>::
00454     seekp(off_type __off, ios_base::seekdir __dir)
00455     {
00456       ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
00457       try
00458     {
00459       if (!this->fail())
00460         {
00461           // _GLIBCXX_RESOLVE_LIB_DEFECTS
00462           // 136.  seekp, seekg setting wrong streams?
00463           pos_type __p = this->rdbuf()->pubseekoff(__off, __dir, 
00464                                ios_base::out);
00465           
00466           // 129. Need error indication from seekp() and seekg()
00467           if (__p == pos_type(off_type(-1)))
00468         __err |= ios_base::failbit;
00469         }
00470     }
00471       catch(...)
00472     { this->_M_setstate(ios_base::badbit); }
00473       if (__err)
00474     this->setstate(__err);
00475       return *this;
00476     }
00477 
00478   // 27.6.2.5.4 Character inserters.
00479   template<typename _CharT, typename _Traits>
00480     basic_ostream<_CharT, _Traits>&
00481     operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)
00482     {
00483       typedef basic_ostream<_CharT, _Traits> __ostream_type;
00484       typename __ostream_type::sentry __cerb(__out);
00485       if (__cerb)
00486     {
00487       try 
00488         {
00489           const streamsize __w = __out.width() > 0 ? __out.width() : 0;
00490           _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * (__w + 1)));
00491           __pads[0] = __c;
00492           streamsize __len = 1;
00493           if (__w > __len)
00494         {
00495           __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, 
00496                          &__c, __w, __len, false);
00497           __len = __w;
00498         }
00499           __out.write(__pads, __len);
00500           __out.width(0);
00501         }
00502       catch(...)
00503         { __out._M_setstate(ios_base::badbit); }
00504     }
00505       return __out;
00506     }
00507   
00508   // Specializations.
00509   template <class _Traits> 
00510     basic_ostream<char, _Traits>&
00511     operator<<(basic_ostream<char, _Traits>& __out, char __c)
00512     {
00513       typedef basic_ostream<char, _Traits> __ostream_type;
00514       typename __ostream_type::sentry __cerb(__out);
00515       if (__cerb)
00516     {
00517       try 
00518         {
00519           const streamsize __w = __out.width() > 0 ? __out.width() : 0;
00520           char* __pads = static_cast<char*>(__builtin_alloca(__w + 1));
00521           __pads[0] = __c;
00522           streamsize __len = 1;
00523           if (__w > __len)
00524         {
00525           __pad<char, _Traits>::_S_pad(__out, __out.fill(), __pads, 
00526                            &__c, __w, __len, false);
00527           __len = __w;
00528         }
00529           __out.write(__pads, __len);
00530           __out.width(0);
00531         }
00532       catch(...)
00533         { __out._M_setstate(ios_base::badbit); }
00534     }
00535       return __out;
00536      }
00537 
00538   template<typename _CharT, typename _Traits>
00539     basic_ostream<_CharT, _Traits>&
00540     operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)
00541     {
00542       typedef basic_ostream<_CharT, _Traits> __ostream_type;
00543       typename __ostream_type::sentry __cerb(__out);
00544       if (__cerb && __s)
00545     {
00546       try 
00547         {
00548           const streamsize __w = __out.width() > 0 ? __out.width() : 0;
00549           _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __w));
00550           streamsize __len = static_cast<streamsize>(_Traits::length(__s));
00551           if (__w > __len)
00552         {
00553           __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, 
00554                          __s, __w, __len, false);
00555           __s = __pads;
00556           __len = __w;
00557         }
00558           __out.write(__s, __len);
00559           __out.width(0);
00560         }
00561       catch(...)
00562         { __out._M_setstate(ios_base::badbit); }
00563     }
00564       else if (!__s)
00565     __out.setstate(ios_base::badbit);
00566       return __out;
00567     }
00568 
00569   template<typename _CharT, typename _Traits>
00570     basic_ostream<_CharT, _Traits>&
00571     operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
00572     {
00573       typedef basic_ostream<_CharT, _Traits> __ostream_type;
00574 #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
00575 // 167.  Improper use of traits_type::length()
00576 // Note that this is only in 'Review' status.
00577       typedef char_traits<char>          __traits_type;
00578 #endif
00579       typename __ostream_type::sentry __cerb(__out);
00580       if (__cerb && __s)
00581     {
00582       size_t __clen = __traits_type::length(__s);
00583       _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * (__clen + 1)));
00584       for (size_t  __i = 0; __i < __clen; ++__i)
00585         __ws[__i] = __out.widen(__s[__i]);
00586       _CharT* __str = __ws;
00587       
00588       try 
00589         {
00590           streamsize __len = static_cast<streamsize>(__clen);
00591           const streamsize __w = __out.width() > 0 ? __out.width() : 0;
00592           _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __w));
00593           
00594           if (__w > __len)
00595         {
00596           __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, 
00597                          __ws, __w, __len, false);
00598           __str = __pads;
00599           __len = __w;
00600         }
00601           __out.write(__str, __len);
00602           __out.width(0);
00603         }
00604       catch(...)
00605         { __out._M_setstate(ios_base::badbit); }
00606     }
00607       else if (!__s)
00608     __out.setstate(ios_base::badbit);
00609       return __out;
00610     }
00611 
00612   // Partial specializations.
00613   template<class _Traits>
00614     basic_ostream<char, _Traits>&
00615     operator<<(basic_ostream<char, _Traits>& __out, const char* __s)
00616     {
00617       typedef basic_ostream<char, _Traits> __ostream_type;
00618       typename __ostream_type::sentry __cerb(__out);
00619       if (__cerb && __s)
00620     {
00621       try 
00622         {
00623           const streamsize __w = __out.width() > 0 ? __out.width() : 0;
00624           char* __pads = static_cast<char*>(__builtin_alloca(__w));
00625           streamsize __len = static_cast<streamsize>(_Traits::length(__s));
00626 
00627           if (__w > __len)
00628         {
00629           __pad<char, _Traits>::_S_pad(__out, __out.fill(), __pads, 
00630                          __s, __w, __len, false);
00631           __s = __pads;
00632           __len = __w;
00633         }
00634           __out.write(__s, __len);
00635           __out.width(0);
00636         }
00637       catch(...)
00638         { __out._M_setstate(ios_base::badbit); }
00639     }
00640       else if (!__s)
00641     __out.setstate(ios_base::badbit);
00642       return __out;
00643     }
00644 
00645   // 21.3.7.9 basic_string::operator<<
00646   template<typename _CharT, typename _Traits, typename _Alloc>
00647     basic_ostream<_CharT, _Traits>&
00648     operator<<(basic_ostream<_CharT, _Traits>& __out,
00649            const basic_string<_CharT, _Traits, _Alloc>& __str)
00650     { 
00651       typedef basic_ostream<_CharT, _Traits> __ostream_type;
00652       typename __ostream_type::sentry __cerb(__out);
00653       if (__cerb)
00654     {
00655       const _CharT* __s = __str.data();
00656       const streamsize __w = __out.width() > 0 ? __out.width() : 0;
00657       _CharT* __pads = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT) * __w));
00658       streamsize __len = static_cast<streamsize>(__str.size());
00659 #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
00660       // 25. String operator<< uses width() value wrong
00661 #endif
00662       if (__w > __len)
00663         {
00664           __pad<_CharT, _Traits>::_S_pad(__out, __out.fill(), __pads, __s, 
00665                          __w, __len, false);
00666           __s = __pads;
00667           __len = __w;
00668         }
00669       streamsize __res = __out.rdbuf()->sputn(__s, __len);
00670       __out.width(0);
00671       if (__res != __len)
00672         __out.setstate(ios_base::failbit);
00673     }
00674       return __out;
00675     }
00676 
00677   // Inhibit implicit instantiations for required instantiations,
00678   // which are defined via explicit instantiations elsewhere.  
00679   // NB:  This syntax is a GNU extension.
00680 #if _GLIBCPP_EXTERN_TEMPLATE
00681   extern template class basic_ostream<char>;
00682   extern template ostream& endl(ostream&);
00683   extern template ostream& ends(ostream&);
00684   extern template ostream& flush(ostream&);
00685   extern template ostream& operator<<(ostream&, char);
00686   extern template ostream& operator<<(ostream&, unsigned char);
00687   extern template ostream& operator<<(ostream&, signed char);
00688   extern template ostream& operator<<(ostream&, const char*);
00689   extern template ostream& operator<<(ostream&, const unsigned char*);
00690   extern template ostream& operator<<(ostream&, const signed char*);
00691 
00692 #ifdef _GLIBCPP_USE_WCHAR_T
00693   extern template class basic_ostream<wchar_t>;
00694   extern template wostream& endl(wostream&);
00695   extern template wostream& ends(wostream&);
00696   extern template wostream& flush(wostream&);
00697   extern template wostream& operator<<(wostream&, wchar_t);
00698   extern template wostream& operator<<(wostream&, char);
00699   extern template wostream& operator<<(wostream&, const wchar_t*);
00700   extern template wostream& operator<<(wostream&, const char*);
00701 #endif
00702 #endif
00703 } // namespace std

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