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diff --git a/libstdc++-v3/testsuite/25_algorithms/is_heap/1.cc b/libstdc++-v3/testsuite/25_algorithms/is_heap/1.cc
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+// { dg-options "-std=gnu++0x" }
+
+// 2007-10-12  Paolo Carlini  <pcarlini@suse.de>
+//
+// Copyright (C) 2007 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 2, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without Pred 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// 25.3.6 Heap operations [lib.alg.heap.operations]
+
+#include <algorithm>
+#include <functional>
+#include <testsuite_hooks.h>
+
+int A[] = {9, 8, 6, 7, 7, 5, 5, 3, 6, 4, 1, 2, 3, 4};
+int B[] = {1, 3, 2, 4, 4, 6, 3, 5, 5, 7, 7, 6, 8, 9};
+const int N = sizeof(A) / sizeof(int);
+
+void
+test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  for (int i = 0; i <= N; ++i)
+    {
+      VERIFY( std::is_heap(A, A + i) );
+      VERIFY( std::is_heap(A, A + i, std::less<int>()) );
+      VERIFY( std::is_heap(B, B + i, std::greater<int>()) );
+      VERIFY( (i < 2) || !std::is_heap(B, B + i) );
+    }
+}
+
+int
+main()
+{
+  test01();
+  return 0;
+}