[Openmcl-devel] How to get to the frame number in Slime's *inferior-lisp*

Mirko Vukovic mirko.vukovic at gmail.com
Sun Sep 4 17:35:30 UTC 2016


Thanks Bill.

The example helped.

Mirko

On Thu, Aug 18, 2016 at 7:44 AM Bill St. Clair <wws at clozure.com> wrote:

> The frame number is best taken from a backtrace produced by :B. Here’s an
> example:
>
> ? (defun foo (x)
>       (let ((y (+ x x)))
>         (if (> x 9) (break) (foo (1+ x))) y))
> FOO
> ? (foo 1)
> > Break: Break
> > While executing: FOO, in process listener(1).
> > Type :GO to continue, :POP to abort, :R for a list of available restarts.
> > If continued: Return from BREAK.
> > Type :? for other options.
> 1 > (:b :count 4)
>  (210668F8) : 0 (FOO 10) 141
>  (21066918) : 1 (FOO 9) 213
>  (21066938) : 2 (FOO 8) 213
>  (21066958) : 3 (FOO 7) 213
> 1 > (:arg x 0)
> 10
> 1 > (:local y 0)
> 20
> 1 > (:arg x 1)
> 9
> 1 > (:local y 1)
> 18
> 1 > (:arg x 3)
> 7
> 1 > (:local y 3)
> 14
>
> :local and :arg are only useful if you know the names of the local
> variables and args. You can show them by displaying the whole frame:
>
> 1 > (:f 2)
>  (21066938) : 2 (FOO 8) 213
>   (X)
>    X: 8
>   Y: 16
>
> All of which is why I use Slime instead of the built-in CCL debugger. But
> that’s hard to do while debugging the loading of Slime.
>
> Bill
>
> On Wed, Aug 17, 2016 at 10:28 PM, Mirko Vukovic <mirko.vukovic at gmail.com>
> wrote:
>
>> Hi,
>>
>> I am trying to debug CCL startup on Emacs' Slime (Windows 7).  I inserted
>> a breakpoint
>> in swank's START-SERVER, and get the following output in the
>> *inferior-lisp* buffer:
>>
>> Welcome to Clozure Common Lisp Version 1.11-r16635  (WindowsX8664)!
>>
>> CCL is developed and maintained by Clozure Associates. For more
>> information
>> about CCL visit http://ccl.clozure.com.  To enquire about Clozure's
>> Common Lisp
>> consulting services e-mail info at clozure.com or visit
>> http://www.clozure.com.
>>
>> ? ;Loading #P"c:/Users/977315/.emacs.d/elisp/slime/swank-loader.lisp"...
>> > Break: start-server
>> > While executing: SWANK:START-SERVER, in process listener(1).
>> > Type :GO to continue, :POP to abort, :R for a list of available
>> restarts.
>> > If continued: Return from BREAK.
>> > Type :? for other options.
>> 1 >
>>
>> I'd like to examine the values of some variables using :LOCAL or :ARG.
>> How do I refer to a variable?  I tried 'foo, foo, "foo" (and the
>> uppercase variants).  I am using 0 as frame number as
>> (:V 0 0) gave sensible results.
>>
>> Thanks,
>>
>> Mirko
>>
>>
>>
>> _______________________________________________
>> Openmcl-devel mailing list
>> Openmcl-devel at clozure.com
>> https://lists.clozure.com/mailman/listinfo/openmcl-devel
>>
>>
>
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