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diff --git a/libstdc++-v3/testsuite/25_algorithms/equal/no_operator_ne.cc b/libstdc++-v3/testsuite/25_algorithms/equal/no_operator_ne.cc
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+++ b/libstdc++-v3/testsuite/25_algorithms/equal/no_operator_ne.cc
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+// 2001-04-06 gdr
+
+// Copyright (C) 2000, 2005 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 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+#include <vector>
+#include <algorithm>
+
+//
+// 25.1.8 Make sure std::equal doesn't make any extra assumption
+//        about operator== and operator!=
+//
+
+struct X { };
+
+bool operator==(X, X) { return true; }
+
+// Not implemented on purpose.  { dg-do link }
+bool operator!=(X, X);
+
+int main()
+{
+  std::vector<X> v, w;
+  return !std::equal(v.begin(), v.end(), w.begin());
+}