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diff --git a/libstdc++-v3/testsuite/23_containers/unordered_map/dr761.cc b/libstdc++-v3/testsuite/23_containers/unordered_map/dr761.cc
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+++ b/libstdc++-v3/testsuite/23_containers/unordered_map/dr761.cc
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+// { dg-options "-std=gnu++0x" }
+// 2008-05-22  Paolo Carlini  <paolo.carlini@oracle.com>
+//
+// Copyright (C) 2008, 2009 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 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/>.
+
+#include <unordered_map>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+// DR 761. unordered_map needs an at() member function.
+void test01() 
+{ 
+  bool test __attribute__((unused)) = true;
+  typedef std::unordered_map<int, double> map_type;
+
+  {
+    map_type m;
+    m[0] = 1.5;
+
+    double& rd = m.at(0);
+    VERIFY( rd == 1.5 );
+    try
+      {
+	m.at(1);
+      }
+    catch(std::out_of_range& obj)
+      {
+	// Expected.
+      }
+    catch(...)
+      {
+	// Failed.
+	throw;
+      }    
+  }
+
+  {
+    map_type m;
+    m[1] = 2.5;
+    const map_type cm(m);
+
+    const double& crd = cm.at(1);
+    VERIFY( crd == 2.5 );
+    try
+      {
+	cm.at(0);
+      }
+    catch(std::out_of_range& obj)
+      {
+	// Expected.
+      }
+    catch(...)
+      {
+	// Failed.
+	throw;
+      }    
+  }
+}
+
+int main()
+{
+  test01();
+  return 0;
+}