for _, n := range f.Name {
		if n.Kind == "func" {
			functions[n.Go] = false
		}
	}

	// Now that we have all the name types filled in,
	// scan through the Refs to identify the ones that
	// are trying to do a ,err call. Also check that
	// functions are only used in calls.
	for _, r := range f.Ref {
		if r.Name.IsConst() && r.Name.Const == "" {