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, 85 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/util/regression/trait/erase_if_fn.hpp b/libstdc++-v3/testsuite/util/regression/trait/erase_if_fn.hpp
new file mode 100644
index 000000000..9903dfeb3
--- /dev/null
+++ b/libstdc++-v3/testsuite/util/regression/trait/erase_if_fn.hpp
@@ -0,0 +1,85 @@
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 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.
+
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file erase_if_fn.hpp
+ * Contains traits for a random regression test
+ *    for a specific container type.
+ */
+
+#ifndef PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP
+#define PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP
+
+#include <functional>
+
+namespace __gnu_pbds
+{
+  namespace test
+  {
+    namespace detail
+    {
+      template<typename T>
+      struct regression_test_erase_if_fn 
+      : public std::unary_function<T, bool>
+      {
+      private:
+	typedef const T&  const_reference;
+
+      public:
+	bool
+        operator()(const_reference r_t) const
+	{
+	  return (r_t.length() == 0 ||
+		  static_cast<size_t>(*((r_t).begin())) % 2 == 1);
+	}
+      };
+
+      template<typename Hd, class Tl>
+      struct regression_test_erase_if_fn<std::pair<Hd, Tl> > 
+      : public std::unary_function<std::pair<Hd, Tl>, bool>
+      {
+      private:
+	typedef const std::pair<Hd, Tl>&  const_reference;
+	typedef regression_test_erase_if_fn<Hd> hd_erase_if_fn;
+	typedef regression_test_erase_if_fn<Tl> tl_erase_if_fn;
+
+      public:
+	bool
+        operator()(const_reference r_t) const
+	{
+	  return (hd_erase_if_fn()(r_t.first) && tl_erase_if_fn()(r_t.second));
+	}
+      };
+    } // namespace detail
+  } // namespace test
+} // namespace __gnu_pbds
+
+#endif