File: fallback.lisp

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acl2 8.0dfsg-1
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(in-package #:trivial-backtrace)

(eval-when (:compile-toplevel :load-toplevel :execute)
  (unless (fboundp 'impl-map-backtrace)
    (defun impl-map-backtrace (func)
      (declare (ignore func))))

  (unless (fboundp 'print-backtrace-to-stream)
    (defun print-backtrace-to-stream (stream)
      (format stream "~&backtrace output unavailable.~%"))))