Jean-Claude Beaudoin <jean.claude.beaudoin@gmail.com> writes:
> I can reproduce the problem now, thank you very much. It is a bug in
> the code generated by the "Lisp to C" compiler for form
> "multiple-value-bind" (and probably also multiple-value-setq) but only
> when (optimize (debug 2)) is in effect. Any other value of "debug"
> makes the problem disappear. Your slime setup has most probably
> changed the effective global "debug" value through some call to
> #'cl:proclaim at some point. (BTW, the effective global "debug" value
> is stored in si::*debug*)
>
> I am working on a fix for the bug...
Great!