;;; get efficient compilation of the inline expansion of
;;; %FIND-POSITION-IF, so it should maybe be in a more
;;; compiler-friendly package (SB-INT?)
-(defknown sb!impl::signal-bounding-indices-bad-error (sequence index index)
+(defknown sb!impl::signal-bounding-indices-bad-error
+ (sequence index sequence-end)
nil) ; never returns