1.1 --- a/lemon/list_graph.h	Thu Feb 25 09:46:12 2021 +0100
     1.2 +++ b/lemon/list_graph.h	Tue Jul 28 21:23:36 2020 +0200
     1.3 @@ -1657,6 +1657,7 @@
     1.4        RedNode() {}
     1.5        RedNode(const RedNode& node) : Node(node) {}
     1.6        RedNode(Invalid) : Node(INVALID){}
     1.7 +      const RedNode& operator=(const RedNode& node) { Node::operator=(node); return *this;}
     1.8      };
     1.9  
    1.10      class BlueNode : public Node {
    1.11 @@ -1669,6 +1670,7 @@
    1.12        BlueNode() {}
    1.13        BlueNode(const BlueNode& node) : Node(node) {}
    1.14        BlueNode(Invalid) : Node(INVALID){}
    1.15 +      const BlueNode& operator=(const BlueNode& node) { Node::operator=(node); return *this;}
    1.16      };
    1.17  
    1.18      class Edge {