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[ginac.git] / ginac / hash_map.h

diff --git a/ginac/hash_map.h b/ginac/hash_map.h
index 5e9895ae387dd9861cbe34905cc123b7c5f32fa2..fb37d862cc752106baa0913e91a8f6fb7da30569 100644 (file)
--- a/ginac/hash_map.h
+++ b/ginac/hash_map.h
@@ -3,7 +3,7 @@
  *  Replacement for map<> using hash tables. */
 
 /*
- *  GiNaC Copyright (C) 1999-2011 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -192,7 +192,7 @@ public:
        typedef typename Table::size_type size_type;
        typedef typename Table::difference_type difference_type;
 
-       class value_compare : public std::binary_function<value_type, value_type, bool>, private key_compare {
+       class value_compare : private key_compare {
                friend class exhashmap;
        public:
                bool operator()(const value_type &lhs, const value_type &rhs) const