Unhelpful error message added by Kooda on Fri Apr 17 10:40:17 2020

;; err.scm
(import (chicken foreign))

(define foo
  (foreign-lambda* void ((blob in)) ""))

(foo 0)

;; output
; ./err

Error: bad argument type - not a non-immediate value: 0

        Call history:

        err.scm:6: foo          <--