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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4 files changed, 190 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/deque_iterators/1.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/deque_iterators/1.cc
new file mode 100644
index 000000000..211de8129
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/deque_iterators/1.cc
@@ -0,0 +1,52 @@
+// 2009-12-24  Paolo Carlini  <paolo.carlini@oracle.com>
+//
+// 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/>.
+
+#include <algorithm>
+#include <deque>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  using namespace std;
+
+  deque<long> data(200);
+  for (unsigned i = 0; i < data.size(); ++i)
+    data[i] = i;
+
+  const deque<long> data_1(data.size(), -1);
+
+  for (unsigned i = 0; i < data.size(); i += 2)
+    for (unsigned j = i; j <= data.size(); j += 3)
+      for (unsigned k = 0; k + (j - i) <= data.size(); k += 5)
+	{
+	  deque<long> d(data.size(), -1);
+	  copy_backward(data.begin() + i, data.begin() + j,
+			d.begin() + k + (j - i));
+
+	  VERIFY( equal(data.begin() + i, data.begin() + j,
+			d.begin() + k) );
+	  VERIFY( equal(d.begin(), d.begin() + k, data_1.begin()) );
+	  VERIFY( equal(d.begin() + k + (j - i), d.end(), data_1.begin()) );
+	}
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/move_iterators/1.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/move_iterators/1.cc
new file mode 100644
index 000000000..2f697b0b3
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/move_iterators/1.cc
@@ -0,0 +1,66 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2007, 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/>.
+
+#undef _GLIBCXX_CONCEPT_CHECKS
+
+#include <algorithm>
+#include <iterator>
+#include <testsuite_hooks.h>
+#include <testsuite_iterators.h>
+#include <testsuite_rvalref.h>
+
+using __gnu_test::test_container;
+using __gnu_test::bidirectional_iterator_wrapper;
+using __gnu_test::rvalstruct;
+using std::copy_backward;
+
+typedef test_container<rvalstruct,
+		       bidirectional_iterator_wrapper> container_in;
+typedef test_container<rvalstruct,
+		       bidirectional_iterator_wrapper> container_out;
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  int inarray[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+  const int size = sizeof(inarray) / sizeof(int);
+
+  rvalstruct in[size], out[size];
+  std::copy(inarray, inarray + size, in);
+  std::fill(out, out + size, 0);
+
+  container_in incon(in, in + size);
+  container_out outcon(out, out + size);
+
+  copy_backward(std::move_iterator<bidirectional_iterator_wrapper<rvalstruct> >(incon.begin()),
+		std::move_iterator<bidirectional_iterator_wrapper<rvalstruct> >(incon.end()),
+		outcon.end());
+  VERIFY( std::equal(out, out + size, inarray) );
+  for (int z = 0; z < size; ++z)
+    VERIFY( out[z].valid );
+  for (int z = 0; z < size; ++z)
+    VERIFY( !in[z].valid );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/requirements/explicit_instantiation/2.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/requirements/explicit_instantiation/2.cc
new file mode 100644
index 000000000..b3bd8b4b7
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/requirements/explicit_instantiation/2.cc
@@ -0,0 +1,36 @@
+// { dg-do compile }
+
+// 2007-09-20 Benjamin Kosnik <bkoz@redhat.com>
+
+// Copyright (C) 2007, 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/>.
+
+
+#include <algorithm>
+#include <testsuite_api.h>
+
+namespace std
+{
+  using __gnu_test::NonDefaultConstructible;
+
+  typedef NonDefaultConstructible 		value_type;
+  typedef value_type* 		iterator_type;
+  typedef unsigned short 	size_type;
+
+  template iterator_type copy_backward(iterator_type, iterator_type, 
+				       iterator_type);
+} 
diff --git a/libstdc++-v3/testsuite/25_algorithms/copy_backward/requirements/explicit_instantiation/pod.cc b/libstdc++-v3/testsuite/25_algorithms/copy_backward/requirements/explicit_instantiation/pod.cc
new file mode 100644
index 000000000..39a0bff8c
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/copy_backward/requirements/explicit_instantiation/pod.cc
@@ -0,0 +1,36 @@
+// { dg-do compile }
+
+// 2007-09-20 Benjamin Kosnik <bkoz@redhat.com>
+
+// Copyright (C) 2007, 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/>.
+
+
+#include <algorithm>
+#include <testsuite_character.h>
+
+namespace std
+{
+  using __gnu_test::pod_int;
+
+  typedef pod_int 		value_type;
+  typedef value_type* 		iterator_type;
+  typedef unsigned short 	size_type;
+
+  template iterator_type copy_backward(iterator_type, iterator_type, 
+				       iterator_type);
+}