Index: src/ResolvExpr/ConversionCost.h
===================================================================
--- src/ResolvExpr/ConversionCost.h	(revision 40404257da8f22441f6123bdbff37bdb54e0e5f3)
+++ src/ResolvExpr/ConversionCost.h	(revision 19b5d6b862d65ab02aafb546c784bf8f596cbc81)
@@ -41,4 +41,6 @@
 		virtual void visit(TupleType *tupleType);
 		virtual void visit(VarArgsType *varArgsType);
+		virtual void visit(ZeroType *zeroType);
+		virtual void visit(OneType *oneType);
 	  protected:
 		Type *dest;