% rlwrap maxima
Maxima 5.41.0 http://maxima.sourceforge.net
using Lisp SBCL 1.4.6.debian
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) to_lisp();

Type (to-maxima) to restart, ($quit) to quit Maxima.

MAXIMA> (load "/tmp/pdiff.lisp")

; file: /tmp/pdiff.lisp
; in: DEFUN PDIFF-GET-NUMBER-ARGS
;     (MAXIMA::MEMQ MAXIMA::F
;                   '(MAXIMA::%LOG MAXIMA::%GAMMA MAXIMA::%ERF MAXIMA::%SQRT
;                     MAXIMA::MABS))
;
; caught WARNING:
;   Compile-time package lock violation:
;     Lock on package SB-KERNEL violated when declaring *HANDLER-CLUSTERS* special
;     while in package MAXIMA.
;   See also:
;     The SBCL Manual, Node "Package Locks"
;
; caught ERROR:
;   Lock on package SB-KERNEL violated when declaring *HANDLER-CLUSTERS* special
;   while in package MAXIMA.
;   See also:
;     The SBCL Manual, Node "Package Locks"
While evaluating the form starting at line 31, column 0

Maxima encountered a Lisp error:

   failed AVER: (NOT (SB-C::CTRAN-NEXT SB-C::CTRAN))
 This is probably a bug in SBCL itself. (Alternatively, SBCL might have been
 corrupted by bad user code, e.g. by an undefined Lisp operation like
 (FMAKUNBOUND 'COMPILE), or by stray pointers from alien code or from unsafe
 Lisp code; or there might be a bug in the OS or hardware that SBCL is running
 on.) If it seems to be a bug in SBCL itself, the maintainers would like to
 know about it. Bug reports are welcome on the SBCL mailing lists, which you
 can find at <http://sbcl.sourceforge.net/>.

Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.
  of #P"/tmp/pdiff.lisp":;
                         ; compilation unit aborted
                         ;   caught 1 fatal ERROR condition
                         ;   caught 1 ERROR condition
                         ;   caught 1 WARNING condition

MAXIMA>