(defcfun ("render" c-render) :void (point (:struct point)) (width :int) (height :int) (info :string) (world :pointer)) (c-render point width height "FOO" (world-c world)) There is no applicable method for the generic function # when called with arguments (#.(SB-SYS:INT-SAP #X7FFFF4507EF8) # #.(SB-SYS:INT-SAP #X7FFFF4507ED0)). [Condition of type SIMPLE-ERROR]