Index: src/SynTree/Type.h
===================================================================
--- src/SynTree/Type.h	(revision fc9153d3ba3b3695534e2a2b4c1a7c29819e0975)
+++ src/SynTree/Type.h	(revision 8aa474a522cf439767cfb0cb3720af96323fc04f)
@@ -356,4 +356,6 @@
 	bool isTtype() const;
 
+	bool isUnprototyped() const { return isVarArgs && parameters.size() == 0; }
+
 	virtual FunctionType *clone() const override { return new FunctionType( *this ); }
 	virtual void accept( Visitor & v ) override { v.visit( this ); }