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diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/comparison/less.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/comparison/less.cc
new file mode 100644
index 00000000..7f35dbe8
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/comparison/less.cc
@@ -0,0 +1,96 @@
+// { 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
+// .
+
+// 20.8.13.2 Template class shared_ptr [util.smartptr.shared]
+
+#include
+#include
+
+struct A { };
+
+namespace std
+{
+ template<>
+ struct less : binary_function
+ {
+ static int count;
+ bool operator()(A* l, A* r) { ++count; return l < r; }
+ };
+ int less::count = 0;
+}
+
+// 20.8.13.2.7 shared_ptr comparison [util.smartptr.shared.cmp]
+
+
+int
+test01()
+{
+ std::less> less;
+ // test empty shared_ptrs compare equivalent
+ std::shared_ptr p1;
+ std::shared_ptr p2;
+ VERIFY( !less(p1, p2) && !less(p2, p1) );
+ VERIFY( std::less::count == 2 );
+ return 0;
+}
+
+
+// Construction from pointer
+int
+test02()
+{
+ std::less> less;
+
+ std::shared_ptr empty;
+ std::shared_ptr p1(new A);
+ std::shared_ptr p2(new A);
+
+ VERIFY( less(p1, p2) || less(p2, p1) );
+ VERIFY( !(less(p1, p2) && less(p2, p1)) );
+
+ p1.reset();
+ VERIFY( !less(p1, empty) && !less(empty, p1) );
+
+ p2.reset();
+ VERIFY( !less(p1, p2) && !less(p2, p1) );
+
+ return 0;
+}
+
+// Aliasing
+int
+test03()
+{
+ std::less> less;
+
+ A a;
+ std::shared_ptr p1(new A);
+ std::shared_ptr p2(p1, &a);
+ VERIFY( less(p1, p2) || less(p2, p1) );
+
+ return 0;
+}
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}