Re: [Maxima-discuss] Debugging maxima

[Vince Blay-M. <v.b...@gm...>]

Thanx for this tip/ tutorial Michel!
Shoutout to everyone else who have been contributing thus. I have seen some
great initiatives  in recent times that are going to make the user
experience much better. Thanks to all active contributors. You are all
appreciated🙌🏿

This e-mail (including any attachment) is for the sole use of the intended
recipient(s) and may contain confidential and/or privileged information. If
you are not an intended recipient, please notify the sender immediately and
delete or destroy the original and any copy.

On Mon, Jul 21, 2025, 5:36 a.m. Michel Talon <ta...@lp...> wrote:

>
> Le 19/07/2025 à 18:36, Robert Dodier a écrit :
>
> Setting breakpoints isn't straightforward, from what I know. Here's my
> clumsy workaround.
>
>
> Like Robert i have not found the lisp debugger of gcl usable. I think the
> first step to debug something in maxima is to use a maxima compiled with
> sbcl. Then to set breakpoints at entry of a function one can use the sbcl
> extension of the trace function such as:
>
> :lisp (trace 'some-function' :break true)
>
> If one wants to single step the program one must first recompile it
> setting some
>
> (declaim (optimize (debug 3)))
>
> at its beginning.  The at the breakpoint one can say first: start which
> starts tracing and the commands like step to single step, etc. One then
> gets something very close to what gdb allows.
>
> Here are some extracts from sbcl documentation: (describe 'trace)
>
>        :BREAK Form
>        :BREAK-AFTER Form
>        :BREAK-ALL Form
>            If specified, and Form evaluates to true, then the debugger is
> invoked
>            at the start of the function, at the end of the function, or
> both,
>            according to the respective option.
>
> and for the debugger, printing *DEBUG-HELP-STRING*
>
> Inspecting frames:
>   BACKTRACE [n]  shows n frames going down the stack.
>   LIST-LOCALS, L lists locals in current frame.
>   PRINT, P       displays function call for current frame.
>   SOURCE [n]     displays frame's source form with n levels of enclosing
> forms.
>
> Stepping:
>   START Selects the CONTINUE restart if one exists and starts
>         single-stepping. Single stepping affects only code compiled with
>         under high DEBUG optimization quality. See User Manual for details.
>   STEP  Steps into the current form.
>   NEXT  Steps over the current form.
>   OUT   Stops stepping temporarily, but resumes it when the topmost frame
> that
>         was stepped into returns.
>   STOP  Stops single-stepping.
>
>
>
>
> --
> Michel Talon
>
> _______________________________________________
> Maxima-discuss mailing list
> Max...@li...
> https://lists.sourceforge.net/lists/listinfo/maxima-discuss
>