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
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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, 150 insertions, 0 deletions

diff --git a/libstdc++-v3/include/debug/safe_sequence.tcc b/libstdc++-v3/include/debug/safe_sequence.tcc
new file mode 100644
index 000000000..bf0295cfd
--- /dev/null
+++ b/libstdc++-v3/include/debug/safe_sequence.tcc
@@ -0,0 +1,150 @@
+// Safe sequence implementation  -*- C++ -*-
+
+// Copyright (C) 2010 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/>.
+
+/** @file debug/safe_sequence.tcc
+ *  This file is a GNU debug extension to the Standard C++ Library.
+ */
+
+#ifndef _GLIBCXX_DEBUG_SAFE_SEQUENCE_TCC
+#define _GLIBCXX_DEBUG_SAFE_SEQUENCE_TCC 1
+
+namespace __gnu_debug
+{
+  template<typename _Sequence>
+    template<typename _Predicate>
+      void
+      _Safe_sequence<_Sequence>::
+      _M_invalidate_if(_Predicate __pred)
+      {
+        typedef typename _Sequence::iterator iterator;
+        typedef typename _Sequence::const_iterator const_iterator;
+
+	__gnu_cxx::__scoped_lock sentry(this->_M_get_mutex());
+        for (_Safe_iterator_base* __iter = _M_iterators; __iter;)
+	  {
+	    iterator* __victim = static_cast<iterator*>(__iter);
+	    __iter = __iter->_M_next;
+	    if (!__victim->_M_singular() && __pred(__victim->base()))
+	      {
+		__victim->_M_invalidate();
+	      }
+	  }
+
+        for (_Safe_iterator_base* __iter2 = _M_const_iterators; __iter2;)
+	  {
+	    const_iterator* __victim = static_cast<const_iterator*>(__iter2);
+	    __iter2 = __iter2->_M_next;
+	    if (!__victim->_M_singular() && __pred(__victim->base()))
+	      {
+		__victim->_M_invalidate();
+	      }
+	  }
+      }
+
+  template<typename _Sequence>
+    template<typename _Predicate>
+      void
+      _Safe_sequence<_Sequence>::
+      _M_transfer_from_if(_Safe_sequence& __from, _Predicate __pred)
+      {
+        typedef typename _Sequence::iterator iterator;
+        typedef typename _Sequence::const_iterator const_iterator;
+
+	_Safe_iterator_base* __transfered_iterators = 0;
+	_Safe_iterator_base* __transfered_const_iterators = 0;
+	_Safe_iterator_base* __last_iterator = 0;
+	_Safe_iterator_base* __last_const_iterator = 0;
+	{
+	  // We lock __from first and detach iterator(s) to transfer
+	  __gnu_cxx::__scoped_lock sentry(__from._M_get_mutex());
+
+          for (_Safe_iterator_base* __iter = __from._M_iterators; __iter;)
+	    {
+	      iterator* __victim = static_cast<iterator*>(__iter);
+	      __iter = __iter->_M_next;
+	      if (!__victim->_M_singular() && __pred(__victim->base()))
+		{
+		  __victim->_M_detach_single();
+		  if (__transfered_iterators)
+		    {
+		      __victim->_M_next = __transfered_iterators;
+		      __transfered_iterators->_M_prior = __victim;
+		    }
+		  else
+		    __last_iterator = __victim;
+		  __victim->_M_sequence = this;
+		  __victim->_M_version = this->_M_version;
+		  __transfered_iterators = __victim;
+		}
+	    }
+
+	  for (_Safe_iterator_base* __iter2 = __from._M_const_iterators;
+		 __iter2;)
+	    {
+	      const_iterator* __victim = static_cast<const_iterator*>(__iter2);
+	      __iter2 = __iter2->_M_next;
+	      if (!__victim->_M_singular() && __pred(__victim->base()))
+		{
+		  __victim->_M_detach_single();
+		  if (__transfered_const_iterators)
+		    {
+		      __victim->_M_next = __transfered_const_iterators;
+		      __transfered_const_iterators->_M_prior = __victim;
+		    }
+		  else
+		    __last_const_iterator = __victim;
+		  __victim->_M_sequence = this;
+		  __victim->_M_version = this->_M_version;
+		  __transfered_const_iterators = __victim;
+		}
+	    }
+	}
+
+	// Now we can lock *this and add the transfered iterators if any
+	if (__last_iterator || __last_const_iterator)
+	  {
+	    __gnu_cxx::__scoped_lock sentry(this->_M_get_mutex());
+	    if (__last_iterator)
+	      {
+		if (this->_M_iterators)
+		  {
+		    this->_M_iterators->_M_prior = __last_iterator;
+		    __last_iterator->_M_next = this->_M_iterators;
+		  }
+		this->_M_iterators = __transfered_iterators;
+	      }
+	    if (__last_const_iterator)
+	      {
+		if (this->_M_const_iterators)
+		  {
+		    this->_M_const_iterators->_M_prior = __last_const_iterator;
+		    __last_const_iterator->_M_next = this->_M_const_iterators;
+		  }
+		this->_M_const_iterators = __transfered_const_iterators;
+	      }
+	  }
+      }
+} // namespace __gnu_debug
+
+#endif