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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/ov_tree_map_/traits.hpp b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/ov_tree_map_/traits.hpp
new file mode 100644
index 0000000..ac93313
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/ov_tree_map_/traits.hpp
@@ -0,0 +1,190 @@
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 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.
+
+// 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 ov_tree_map_/traits.hpp
+ * Contains an implementation class for ov_tree_.
+ */
+
+#ifndef PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
+#define PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
+
+#include <ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp>
+
+namespace __gnu_pbds
+{
+  namespace detail
+  {
+    /// Tree traits.
+    /// @ingroup traits
+    template<typename Key,
+	     typename Mapped,
+	     class Cmp_Fn,
+	     template<typename Node_CItr,
+		      class Node_Itr,
+		      class Cmp_Fn_,
+		      typename _Alloc_>
+    class Node_Update,
+	     typename _Alloc>
+    struct tree_traits<
+      Key,
+      Mapped,
+      Cmp_Fn,
+      Node_Update,
+      ov_tree_tag,
+      _Alloc>
+    {
+    private:
+      typedef
+      typename types_traits<
+      Key,
+      Mapped,
+      _Alloc,
+      false>::value_type
+      value_type;
+
+    public:
+      typedef
+      typename tree_node_metadata_dispatch<
+      Key,
+      Mapped,
+      Cmp_Fn,
+      Node_Update,
+      _Alloc>::type
+      metadata_type;
+
+      /// This is an iterator to an iterator: it iterates over nodes,
+      /// and de-referencing it returns one of the tree's iterators.
+      typedef
+      ov_tree_node_const_it_<
+	value_type,
+	metadata_type,
+	_Alloc>
+      node_const_iterator;
+
+      typedef
+      ov_tree_node_it_<
+	value_type,
+	metadata_type,
+	_Alloc>
+      node_iterator;
+
+      typedef
+      Node_Update<
+	node_const_iterator,
+	node_iterator,
+	Cmp_Fn,
+	_Alloc>
+      node_update;
+
+      typedef
+      __gnu_pbds::null_node_update<
+	node_const_iterator,
+	node_iterator,
+	Cmp_Fn,
+	_Alloc>* 
+      null_node_update_pointer;
+    };
+
+
+    /// Specialization.
+    /// @ingroup traits
+    template<typename Key,
+	     class Cmp_Fn,
+	     template<typename Node_CItr,
+		      class Node_Itr,
+		      class Cmp_Fn_,
+		      typename _Alloc_>
+    class Node_Update,
+	     typename _Alloc>
+    struct tree_traits<
+      Key,
+      null_type,
+      Cmp_Fn,
+      Node_Update,
+      ov_tree_tag,
+      _Alloc>
+    {
+    private:
+      typedef
+      typename types_traits<
+      Key,
+      null_type,
+      _Alloc,
+      false>::value_type
+      value_type;
+
+    public:
+      typedef
+      typename tree_node_metadata_dispatch<
+      Key,
+      null_type,
+      Cmp_Fn,
+      Node_Update,
+      _Alloc>::type
+      metadata_type;
+
+      /// This is an iterator to an iterator: it iterates over nodes,
+      /// and de-referencing it returns one of the tree's iterators.
+      typedef
+      ov_tree_node_const_it_<
+	value_type,
+	metadata_type,
+	_Alloc>
+      node_const_iterator;
+
+      typedef node_const_iterator node_iterator;
+
+      typedef
+      Node_Update<
+	node_const_iterator,
+	node_const_iterator,
+	Cmp_Fn,
+	_Alloc>
+      node_update;
+
+      typedef
+      __gnu_pbds::null_node_update<
+	node_const_iterator,
+	node_iterator,
+	Cmp_Fn,
+	_Alloc>* 
+      null_node_update_pointer;
+    };
+  } // namespace detail
+} // namespace __gnu_pbds
+
+#endif // #ifndef PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
+