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diff --git a/libstdc++-v3/testsuite/23_containers/deque/invalidation/1.cc b/libstdc++-v3/testsuite/23_containers/deque/invalidation/1.cc
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+++ b/libstdc++-v3/testsuite/23_containers/deque/invalidation/1.cc
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+// Deque iterator invalidation tests
+
+// Copyright (C) 2003 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+#include <debug/deque>
+#include <testsuite_hooks.h>
+
+using __gnu_debug::deque;
+
+bool test = true;
+
+// Assignment
+void test01()
+{
+  deque<int> v1;
+  deque<int> v2;
+
+  deque<int>::iterator i = v1.end();
+  VERIFY(!i._M_dereferenceable() && !i._M_singular());
+
+  v1 = v2;
+  VERIFY(i._M_singular());
+  
+  i = v1.end();
+  v1.assign(v2.begin(), v2.end());
+  VERIFY(i._M_singular());
+
+  i = v1.end();
+  v1.assign(17, 42);
+  VERIFY(i._M_singular());
+}
+
+int main()
+{
+  test01();
+  return !test;
+}