;;; more arg, but there is no new-FP, since the arguments have been set up in
;;; the current frame.
(macrolet ((define-full-call (name named return variable)
- (assert (not (and variable (eq return :tail))))
+ (aver (not (and variable (eq return :tail))))
`(define-vop (,name
,@(when (eq return :unknown)
'(unknown-values-receiver)))