test-ob-sh/session fail on Emacs 23

[Achim Gratz <Stromeko@nexgo.de>]

Updating the system installation with the newest Org version produced
this (old) error.  This time I've got something sensible as backtrace:

Test test-ob-sh/session backtrace:
  (cl-block-wrapper (catch (quote --cl-block-nil--) (let* ((i 6) (fram
  (block nil (let* ((i 6) (frame nil) (--cl-var-- nil)) (while (progn 
  (loop for i from 6 for frame = (backtrace-frame i) while frame colle
  ert--record-backtrace()
  (let* ((condition (first more-debugger-args)) (type (case (car condi
  (cond ((member* first-debugger-arg (quote (lambda debug t exit nil))
  (case first-debugger-arg ((lambda debug t exit nil) (apply (ert--tes
  (ecase first-debugger-arg ((lambda debug t exit nil) (apply (ert--te
  (let* ((more-debugger-args debugger-args) (first-debugger-arg (if mo
  (progn (let* ((more-debugger-args debugger-args) (first-debugger-arg
  (destructuring-bind (first-debugger-arg &rest more-debugger-args) de
  ert--run-test-debugger([cl-struct-ert--test-execution-info [cl-struc
  (lambda (G7961 &rest debugger-args) (ert--run-test-debugger (symbol-
  apply((lambda (G7961 &rest debugger-args) (ert--run-test-debugger (s
  (lambda (&rest --cl-rest--) (apply (lambda (G7961 &rest debugger-arg
  ansi-color-apply-on-region(#<marker in no buffer> #<marker at 16 in 
  ansi-color-process-output("")
  run-hook-with-args(ansi-color-process-output "")
  […]
Test test-ob-sh/session condition:
    (error "Marker does not point anywhere")
   FAILED  113/214  test-ob-sh/session


Regards,
Achim.
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