// this bug (http://scala-webapps.epfl.ch/bugtracking/bugs/displayItem.do?id=1065) // was caused by Uncurry not normalizing all the types // (more specifically the argument/return types of an anonymous Function) object Test extends dotty.runtime.LegacyApp { trait AddRemove { type TNode <: NodeImpl; trait NodeImpl; object removing { type TNode = AddRemove.this.TNode; def printNode(node: TNode, f: TNode => String) = Console.println(f(node)) } } class Linked extends AddRemove { type TNode = Node // can also directly write `class Node extends super.NodeImpl' -- doesn't change the bug class Node extends super.NodeImpl { override def toString = "LinkedNode" } removing.printNode(new Node, (x: removing.TNode) => x.toString) // make inference explicit, doesn't affect the bug } new Linked }