obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
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1 files changed, 205 insertions, 0 deletions

diff --git a/libstdc++-v3/src/ios_init.cc b/libstdc++-v3/src/ios_init.cc
new file mode 100644
index 000000000..a811daf00
--- /dev/null
+++ b/libstdc++-v3/src/ios_init.cc
@@ -0,0 +1,205 @@
+// Iostreams base classes -*- C++ -*-
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+// 2006, 2007, 2008, 2009, 2010, 2011
+// 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 3, 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+//
+// ISO C++ 14882: 27.4  Iostreams base classes
+//
+
+#include <ios>
+#include <ostream>
+#include <istream>
+#include <fstream>
+#include <ext/stdio_filebuf.h>
+#include <ext/stdio_sync_filebuf.h>
+
+namespace __gnu_internal _GLIBCXX_VISIBILITY(hidden)
+{
+  using namespace __gnu_cxx;
+
+  // Extern declarations for global objects in src/globals.cc.
+  extern stdio_sync_filebuf<char> buf_cout_sync;
+  extern stdio_sync_filebuf<char> buf_cin_sync;
+  extern stdio_sync_filebuf<char> buf_cerr_sync;
+
+  extern stdio_filebuf<char> buf_cout;
+  extern stdio_filebuf<char> buf_cin;
+  extern stdio_filebuf<char> buf_cerr;
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+  extern stdio_sync_filebuf<wchar_t> buf_wcout_sync;
+  extern stdio_sync_filebuf<wchar_t> buf_wcin_sync;
+  extern stdio_sync_filebuf<wchar_t> buf_wcerr_sync;
+
+  extern stdio_filebuf<wchar_t> buf_wcout;
+  extern stdio_filebuf<wchar_t> buf_wcin;
+  extern stdio_filebuf<wchar_t> buf_wcerr;
+#endif
+} // namespace __gnu_internal
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  using namespace __gnu_internal;
+  
+  extern istream cin;
+  extern ostream cout;
+  extern ostream cerr;
+  extern ostream clog;
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+  extern wistream wcin;
+  extern wostream wcout;
+  extern wostream wcerr;
+  extern wostream wclog;
+#endif
+
+  ios_base::Init::Init()
+  {
+    if (__gnu_cxx::__exchange_and_add_dispatch(&_S_refcount, 1) == 0)
+      {
+	// Standard streams default to synced with "C" operations.
+	_S_synced_with_stdio = true;
+
+	new (&buf_cout_sync) stdio_sync_filebuf<char>(stdout);
+	new (&buf_cin_sync) stdio_sync_filebuf<char>(stdin);
+	new (&buf_cerr_sync) stdio_sync_filebuf<char>(stderr);
+
+	// The standard streams are constructed once only and never
+	// destroyed.
+	new (&cout) ostream(&buf_cout_sync);
+	new (&cin) istream(&buf_cin_sync);
+	new (&cerr) ostream(&buf_cerr_sync);
+	new (&clog) ostream(&buf_cerr_sync);
+	cin.tie(&cout);
+	cerr.setf(ios_base::unitbuf);
+	// _GLIBCXX_RESOLVE_LIB_DEFECTS
+	// 455. cerr::tie() and wcerr::tie() are overspecified.
+	cerr.tie(&cout);
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+	new (&buf_wcout_sync) stdio_sync_filebuf<wchar_t>(stdout);
+	new (&buf_wcin_sync) stdio_sync_filebuf<wchar_t>(stdin);
+	new (&buf_wcerr_sync) stdio_sync_filebuf<wchar_t>(stderr);
+
+	new (&wcout) wostream(&buf_wcout_sync);
+	new (&wcin) wistream(&buf_wcin_sync);
+	new (&wcerr) wostream(&buf_wcerr_sync);
+	new (&wclog) wostream(&buf_wcerr_sync);
+	wcin.tie(&wcout);
+	wcerr.setf(ios_base::unitbuf);
+	wcerr.tie(&wcout);	
+#endif
+	
+	// NB: Have to set refcount above one, so that standard
+	// streams are not re-initialized with uses of ios_base::Init
+	// besides <iostream> static object, ie just using <ios> with
+	// ios_base::Init objects.
+	__gnu_cxx::__atomic_add_dispatch(&_S_refcount, 1);
+      }
+  }
+
+  ios_base::Init::~Init()
+  {
+    // Be race-detector-friendly.  For more info see bits/c++config.
+    _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&_S_refcount);
+    if (__gnu_cxx::__exchange_and_add_dispatch(&_S_refcount, -1) == 2)
+      {
+        _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&_S_refcount);
+	// Catch any exceptions thrown by basic_ostream::flush()
+	__try
+	  { 
+	    // Flush standard output streams as required by 27.4.2.1.6
+	    cout.flush();
+	    cerr.flush();
+	    clog.flush();
+    
+#ifdef _GLIBCXX_USE_WCHAR_T
+	    wcout.flush();
+	    wcerr.flush();
+	    wclog.flush();    
+#endif
+	  }
+	__catch(...)
+	  { }
+      }
+  } 
+
+  bool 
+  ios_base::sync_with_stdio(bool __sync)
+  { 
+    // _GLIBCXX_RESOLVE_LIB_DEFECTS
+    // 49.  Underspecification of ios_base::sync_with_stdio
+    bool __ret = ios_base::Init::_S_synced_with_stdio;
+
+    // Turn off sync with C FILE* for cin, cout, cerr, clog iff
+    // currently synchronized.
+    if (!__sync && __ret)
+      {
+	// Make sure the standard streams are constructed.
+	ios_base::Init __init;
+
+	ios_base::Init::_S_synced_with_stdio = __sync;
+
+	// Explicitly call dtors to free any memory that is
+	// dynamically allocated by filebuf ctor or member functions,
+	// but don't deallocate all memory by calling operator delete.
+	buf_cout_sync.~stdio_sync_filebuf<char>();
+	buf_cin_sync.~stdio_sync_filebuf<char>();
+	buf_cerr_sync.~stdio_sync_filebuf<char>();
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+	buf_wcout_sync.~stdio_sync_filebuf<wchar_t>();
+	buf_wcin_sync.~stdio_sync_filebuf<wchar_t>();
+	buf_wcerr_sync.~stdio_sync_filebuf<wchar_t>();
+#endif
+
+	// Create stream buffers for the standard streams and use
+	// those buffers without destroying and recreating the
+	// streams.
+	new (&buf_cout) stdio_filebuf<char>(stdout, ios_base::out);
+	new (&buf_cin) stdio_filebuf<char>(stdin, ios_base::in);
+	new (&buf_cerr) stdio_filebuf<char>(stderr, ios_base::out);
+	cout.rdbuf(&buf_cout);
+	cin.rdbuf(&buf_cin);
+	cerr.rdbuf(&buf_cerr);
+	clog.rdbuf(&buf_cerr);
+    
+#ifdef _GLIBCXX_USE_WCHAR_T
+	new (&buf_wcout) stdio_filebuf<wchar_t>(stdout, ios_base::out);
+	new (&buf_wcin) stdio_filebuf<wchar_t>(stdin, ios_base::in);
+	new (&buf_wcerr) stdio_filebuf<wchar_t>(stderr, ios_base::out);
+	wcout.rdbuf(&buf_wcout);
+	wcin.rdbuf(&buf_wcin);
+	wcerr.rdbuf(&buf_wcerr);
+	wclog.rdbuf(&buf_wcerr);
+#endif
+      }
+    return __ret; 
+  }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace