+ ;; FIXME: MNA (on sbcl-devel 2001-05-30) reported
+ ;; (if I understand correctly -- WHN) that this call
+ ;; is directly responsible for defining
+ ;; class-predicates which always return
+ ;; CONSTANTLY-NIL in the compile-time environment,
+ ;; and is indirectly responsible for bogus warnings
+ ;; about redefinitions when making definitions in
+ ;; the interpreter. I didn't like his fix (deleting
+ ;; the call) since I think the type system *should*
+ ;; be informed about class definitions here. And I'm
+ ;; not eager to look too deeply into this sort of
+ ;; done-too-many-times-in-the-interpreter problem
+ ;; right now, since it should be easier to make a
+ ;; clean fix when EVAL-WHEN is made more ANSI (as
+ ;; per the IR1 section in the BUGS file). But
+ ;; at some point this should be cleaned up.