[plt-scheme] exception handling

At Tue, 25 Mar 2003 09:35:01 -0600, Francisco Solsona wrote:
> Robby Findler <robby at cs.uchicago.edu> writes:
> 
> >>   (raise (make-schemeql-unknown-error (wrap-srpersist-exception henv hdbc
> >> hstmt)))
> >> 
> >>  [ ... ]
> >>
> >> One thing I don't quite understand, though, is
> >> why the original 'raise' call above does *not* generate a bug icon.  Is it
> >> the wrong kind of exception, or perhaps it's being trapped again somewhere
> >> higher up?  If there were some way to toggle this behavior, it would be
> >> useful.
> >
> > It doesn't include the continuation marks. See the docs on exn for
> > details. Short version: make the schemeql-unknown-error a substruct of
> > exn and fill in th exn fields too.
> 
> schemeql-unknown-error and, in general, all other schemeql-*
> exceptions are substructs of schemeql-error, so I think that it would
> suffice to make this one a substruct of exn.

That sounds right.

> OTOH, the continuation-marks field is supposed to be always the value
> of (current-continuation-marks) ?  Is there some more documentation on
> this? 

That's right. Just what is documented about exns, I think.

Robby