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Re: debugger status

From: Ludovic Courtès
Subject: Re: debugger status
Date: Mon, 11 Oct 2010 22:00:02 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)


Andy Wingo <address@hidden> writes:

> It's been a few days, but I finished what I was aiming to do with the
> debugger, which is just the basic break-at-procedure, break-at-source,
> step, next, and finish thing. See the manual in Git for docs.

Yaaay!  You are an awesome person, sir!

> The stepping is all based on source locations, which is cool but
> somewhat hampered by Guile's inability to give source location
> information for non-pairs. (See "Source Properties" in the manual.)
> I don't know what the real solution is, but it's not something I'm going
> to poke right now.
> Also, it would be nice to do expression stepping instead of source and
> procedure stepping, but we would have to record the expressions and map
> instruction pointers to subexpressions somehow. Possible to do, but not
> implemented currently.
> Also also, it would be nice if Guile's source properties had a range --
> not just the start line and column, but the end line and column too.
> Also also also, the debugger should have two modes, one where it's
> coming from an error and one where it's coming from a breakpoint. In the
> error case -- the only one we have had so far -- we show source
> information for the instruction that was just executed. But in the
> breakpoint case, the top frame needs to show source information for the
> instruction that's going to be executed next.

All good points, which I agree all qualify as “future work”.  :-)

Thanks for the great work!


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