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diff --git a/libstdc++-v3/testsuite/20_util/weak_ptr/observers/owner_before.cc b/libstdc++-v3/testsuite/20_util/weak_ptr/observers/owner_before.cc
new file mode 100644
index 00000000..786e7eb1
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/weak_ptr/observers/owner_before.cc
@@ -0,0 +1,73 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008, 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/>.
+
+// 20.8.13.3 Template class weak_ptr [util.smartptr.weak]
+
+#include <memory>
+#include <testsuite_hooks.h>
+
+struct A { };
+struct B { };
+
+// 20.6.6.3.5 weak_ptr observers [util.smartptr.weak.obs]
+
+int
+test01()
+{
+  // test empty weak_ptrs compare equivalent
+  std::weak_ptr<A> p1;
+  std::weak_ptr<B> p2;
+  VERIFY( !p1.owner_before(p2) && !p2.owner_before(p1) );
+
+  std::shared_ptr<B> p3;
+  VERIFY( !p1.owner_before(p3) && !p3.owner_before(p1) );
+
+  return 0;
+}
+
+
+int
+test02()
+{
+  std::shared_ptr<A> a0;
+  std::weak_ptr<A> w0(a0);
+
+  std::shared_ptr<A> a1(new A);
+  std::weak_ptr<A> w1(a1);
+  VERIFY( !a1.owner_before(w1) && !w1.owner_before(a1) );
+
+  VERIFY( w1.owner_before(w0) || w0.owner_before(w1) );
+  VERIFY( !(w1.owner_before(w0) && w0.owner_before(w1)) );
+
+  VERIFY( w1.owner_before(a0) || a0.owner_before(w1) );
+  VERIFY( !(w1.owner_before(a0) && a0.owner_before(w1)) );
+
+  std::shared_ptr<B> b1(new B);
+  VERIFY( w1.owner_before(b1) || b1.owner_before(w1) );
+
+  return 0;
+}
+
+int 
+main()
+{
+  test01();
+  test02();
+  return 0;
+}