Index: include/bits/stl_algo.h
===================================================================
--- include/bits/stl_algo.h	(revision 203853)
+++ include/bits/stl_algo.h	(working copy)
@@ -1917,7 +1917,7 @@
 				_RandomAccessIterator __last, _Compare __comp)
     {
       _RandomAccessIterator __mid = __first + (__last - __first) / 2;
-      std::__move_median_to_first(__first, __first + 1, __mid, (__last - 2),
+      std::__move_median_to_first(__first, __first + 1, __mid, (__last - 1),
 				  __comp);
       return std::__unguarded_partition(__first + 1, __last, __first, __comp);
     }
Index: testsuite/25_algorithms/nth_element/58800.cc
===================================================================
--- testsuite/25_algorithms/nth_element/58800.cc	(revision 0)
+++ testsuite/25_algorithms/nth_element/58800.cc	(working copy)
@@ -0,0 +1,47 @@
+// Copyright (C) 2005-2013 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/>.
+
+// 25.3.2 [lib.alg.nth.element]
+
+// { dg-options "-std=gnu++0x" }
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <testsuite_iterators.h>
+
+using __gnu_test::test_container;
+using __gnu_test::random_access_iterator_wrapper;
+
+typedef test_container<int, random_access_iterator_wrapper> Container;
+
+int main()
+{
+        std::vector<int> v = {
+                207089,
+                202585,
+                180067,
+                157549,
+                211592,
+                216096,
+                207089
+        };
+
+        Container con(v.data(), v.data() + 7);
+
+        std::nth_element(con.begin(), con.begin() + 3, con.end());
+        return 0;
+}