Bug pinpointed.
https://github.com/sbcl/sbcl/blob/master/src/pcl/std-class.lisp#L1299
This assumes that (CLASS-NAME CLASS) is a symbol, which conflicts with the MOP passages stated above.
A possible fix would be changing
(list (or (class-name class) 'object))
to
(list (let ((name (class-name class))) (if (and name (symbolp name)) name 'object)))
Bug pinpointed.
https:/ /github. com/sbcl/ sbcl/blob/ master/ src/pcl/ std-class. lisp#L1299
This assumes that (CLASS-NAME CLASS) is a symbol, which conflicts with the MOP passages stated above.
A possible fix would be changing
(list (or (class-name class) 'object))
to
(list (let ((name (class-name class))) (if (and name (symbolp name)) name 'object)))