[C++17] Remove inheritance from std::binary_function, std::unary_function.

[ginac.git] / ginac / hash_map.h

diff --git a/ginac/hash_map.h b/ginac/hash_map.h
index 2616a28491a71c4e3e84eb20323ddf17e0e20bb3..6d334d7d8dafeebbc18792a5f0469dfda368cf00 100644 (file)
--- a/ginac/hash_map.h
+++ b/ginac/hash_map.h
@@ -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