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diff --git a/gnu/gcc/libstdc++-v3/include/backward/function.h b/gnu/gcc/libstdc++-v3/include/backward/function.h
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+// Backward-compat support -*- C++ -*-
+
+// Copyright (C) 2001 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// As a special exception, you may use this file as part of a free software
+// library without restriction.  Specifically, if other files instantiate
+// templates or use macros or inline functions from this file, or you compile
+// this file and link it with other files to produce an executable, this
+// file does not by itself cause the resulting executable to be covered by
+// the GNU General Public License.  This exception does not however
+// invalidate any other reasons why the executable file might be covered by
+// the GNU General Public License.
+
+/*
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Hewlett-Packard Company makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ *
+ * Copyright (c) 1996,1997
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Silicon Graphics makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ */
+
+#ifndef _BACKWARD_FUNCTION_H
+#define _BACKWARD_FUNCTION_H 1
+
+#include "backward_warning.h"
+#include <bits/c++config.h>
+#include <stddef.h>
+#include <bits/stl_function.h>
+#include <ext/functional>
+
+// Names from stl_function.h
+using std::unary_function;
+using std::binary_function;
+using std::plus;
+using std::minus;
+using std::multiplies;
+using std::divides;
+using std::modulus;
+using std::negate;
+using std::equal_to;
+using std::not_equal_to;
+using std::greater;
+using std::less;
+using std::greater_equal;
+using std::less_equal;
+using std::logical_and;
+using std::logical_or;
+using std::logical_not;
+using std::unary_negate;
+using std::binary_negate;
+using std::not1;
+using std::not2;
+using std::binder1st;
+using std::binder2nd;
+using std::bind1st;
+using std::bind2nd;
+using std::pointer_to_unary_function;
+using std::pointer_to_binary_function;
+using std::ptr_fun;
+using std::mem_fun_t;
+using std::const_mem_fun_t;
+using std::mem_fun_ref_t;
+using std::const_mem_fun_ref_t;
+using std::mem_fun1_t;
+using std::const_mem_fun1_t;
+using std::mem_fun1_ref_t;
+using std::const_mem_fun1_ref_t;
+using std::mem_fun;
+using std::mem_fun_ref;
+
+// Names from ext/functional
+using __gnu_cxx::identity_element;
+using __gnu_cxx::unary_compose;
+using __gnu_cxx::binary_compose;
+using __gnu_cxx::compose1;
+using __gnu_cxx::compose2;
+using __gnu_cxx::identity;
+using __gnu_cxx::select1st;
+using __gnu_cxx::select2nd;
+using __gnu_cxx::project1st;
+using __gnu_cxx::project2nd;
+using __gnu_cxx::constant_void_fun;
+using __gnu_cxx::constant_unary_fun;
+using __gnu_cxx::constant_binary_fun;
+using __gnu_cxx::constant0;
+using __gnu_cxx::constant1;
+using __gnu_cxx::constant2;
+using __gnu_cxx::subtractive_rng;
+using __gnu_cxx::mem_fun1;
+using __gnu_cxx::mem_fun1_ref;
+
+#endif /* _BACKWARD_FUNCTION_H */