id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,difficulty 1758,Rest-argument optimization related internal compiler error,Idiomdrottning,,"mdg extension is in brev egg and also depends on match-generics egg (import mdg (chicken base)) (define (pairup lis) lis) (define (pairup (a b . rest)) (cons (list a b) (pairup rest))) (print (pairup '(a b c d e f g h))) ;; on -O2, prints ((a b) (c d) (e f) (g h)) ;; on -O3, Error: [internal compiler error] Unknown rest op node class in while converting to closure. This shouldn't happen!: ##core#rest-null?",defect,closed,major,5.3,compiler,5.2.0,fixed,optimizer,,