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',
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1 files changed, 64 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/23_containers/bitset/to_string/dr396.cc b/libstdc++-v3/testsuite/23_containers/bitset/to_string/dr396.cc
new file mode 100644
index 000000000..d16f43561
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/bitset/to_string/dr396.cc
@@ -0,0 +1,64 @@
+// 2008-09-23  Paolo Carlini  <pcarlini@suse.de>
+
+// Copyright (C) 2008, 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/>.
+
+// 23.3.5.2 bitset members
+
+#include <bitset>
+#include <testsuite_hooks.h>
+
+// DR 396. what are characters zero and one.
+void test01()
+{
+  using namespace std;
+  bool test __attribute__((unused)) = true;
+
+  bitset<5> b5;
+  string s0 = b5.to_string<char, char_traits<char>, allocator<char> >('a', 'b');
+  VERIFY( s0 == "aaaaa" );
+
+  string s1 = b5.to_string<char, char_traits<char>, allocator<char> >('b');
+  VERIFY( s1 == "bbbbb" );
+
+  b5.set(0);
+  string s2 = b5.to_string<char, char_traits<char> >('c', 'd');
+  VERIFY( s2 == "ccccd" );
+
+  string s3 = b5.to_string<char, char_traits<char> >('d');
+  VERIFY( s3 == "dddd1" );
+
+  b5.set(2);
+  string s4 = b5.to_string<char>('e', 'f');
+  VERIFY( s4 == "eefef" );
+
+  string s5 = b5.to_string<char>('f');
+  VERIFY( s5 == "ff1f1" );
+
+  b5.set(4);
+  string s6 = b5.to_string('g', 'h');
+  VERIFY( s6 == "hghgh" );
+
+  string s7 = b5.to_string('h');
+  VERIFY( s7 == "1h1h1" );
+}
+
+int main()
+{
+  test01();
+  return 0;
+}