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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/cond_dealtor.hpp b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/cond_dealtor.hpp
new file mode 100644
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/cond_dealtor.hpp
@@ -0,0 +1,84 @@
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009, 2011 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.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file detail/cond_dealtor.hpp
+ * Contains a conditional deallocator.
+ */
+
+#ifndef PB_DS_COND_DEALTOR_HPP
+#define PB_DS_COND_DEALTOR_HPP
+
+namespace __gnu_pbds
+{
+  namespace detail
+  {
+    /// Conditional deallocate constructor argument.
+    template<typename Entry, typename _Alloc>
+      class cond_dealtor
+      {
+	typedef typename _Alloc::template rebind<Entry>	__rebind_e;
+
+      public:
+	typedef typename __rebind_e::other 		entry_allocator;
+	typedef typename entry_allocator::pointer 	entry_pointer;
+
+	cond_dealtor(entry_pointer p_e)
+	: m_p_e(p_e), m_no_action_destructor(false) { }
+
+	~cond_dealtor()
+	{
+	  if (m_no_action_destructor)
+	    return;
+	  s_alloc.deallocate(m_p_e, 1);
+	}
+
+	void
+	set_no_action()
+	{ m_no_action_destructor = true; }
+
+      private:
+	entry_pointer 		m_p_e;
+	bool 			m_no_action_destructor;
+	static entry_allocator 	s_alloc;
+      };
+
+    template<typename Entry, class _Alloc>
+      typename cond_dealtor<Entry, _Alloc>::entry_allocator
+      cond_dealtor<Entry, _Alloc>::s_alloc;
+  } // namespace detail
+} // namespace __gnu_pbds
+
+#endif // #ifndef PB_DS_COND_DEALTOR_HPP