(let ((arg-pos (position-if #'listp stuff)))
(if arg-pos
`(defmethod ,name ,@(subseq stuff 0 arg-pos)
- ,(nth-value 2 (sb-pcl::parse-specialized-lambda-list
- (elt stuff arg-pos))))
+ ,(handler-case
+ (nth-value 2 (sb-pcl::parse-specialized-lambda-list
+ (elt stuff arg-pos)))
+ (error () "<illegal syntax>")))
`(defmethod ,name "<illegal syntax>"))))
(defvar sb-pcl::*internal-pcl-generalized-fun-name-symbols* nil)