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diff --git a/libstdc++-v3/testsuite/20_util/hash/operators/size_t.cc b/libstdc++-v3/testsuite/20_util/hash/operators/size_t.cc
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+++ b/libstdc++-v3/testsuite/20_util/hash/operators/size_t.cc
@@ -0,0 +1,55 @@
+// { dg-options "-std=gnu++0x" }
+// 2007-08-20  <benjamin@redhat.com>
+//
+// 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 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 <functional>
+#include <system_error>
+#include <testsuite_hooks.h>
+
+template<typename T>
+  void
+  do_test()
+  {
+    bool test __attribute__((unused)) = true;
+
+    typedef T 				value_type;
+    typedef std::hash<value_type> 	hash_type;
+    using std::size_t;
+
+    value_type v; // default initialized is fine, same value all that matters.
+    hash_type h1;
+    size_t r1 = size_t(h1(v));
+    
+    hash_type h2;
+    size_t r2 = size_t(h2(v));
+
+    VERIFY( r1 == r2 );
+  }
+  
+void test01()
+{
+  do_test<std::error_code>();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}