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diff --git a/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/observers/use_count.cc b/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/observers/use_count.cc
new file mode 100644
index 00000000..9fcfbc98
--- /dev/null
+++ b/libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/observers/use_count.cc
@@ -0,0 +1,78 @@
+// Copyright (C) 2005, 2009 Free Software Foundation
+//
+// 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/>.
+
+// TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
+
+#include <tr1/memory>
+#include <testsuite_hooks.h>
+
+struct A { };
+struct B : A { };
+
+// 2.2.3.5 shared_ptr observers [tr.util.smartptr.shared.obs]
+
+// use_count
+int
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  const std::tr1::shared_ptr<A> p1;
+  VERIFY( p1.use_count() == 0 );
+  const std::tr1::shared_ptr<A> p2(p1);
+  VERIFY( p1.use_count() == 0 );
+
+  return 0;
+}
+
+int
+test02()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::tr1::shared_ptr<A> p1(new A);
+  std::tr1::shared_ptr<A> p2(p1);
+  p1.reset();
+  VERIFY( p1.use_count() == 0 );
+  VERIFY( p2.use_count() == 1 );
+
+  return 0;
+}
+
+int
+test03()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::tr1::shared_ptr<A> p1(new A);
+  std::tr1::shared_ptr<A> p2(p1);
+  p2.reset(new B);
+  VERIFY( p1.use_count() == 1 );
+  VERIFY( p2.use_count() == 1 );
+
+  return 0;
+}
+
+
+int 
+main()
+{
+  test01();
+  test02();
+  test03();
+  return 0;
+}