I am sure that Matt is right about not being able to reliably detect the circularity (as he says, he'd have fixed it!), but there _does_ seem to be a consistent feature of broken property bindings. The watcher setup code in generated AS in the broken case seems to contain references to a special "NoChange" event, and the number of watchers approximately doubles when compared to the generated code for the non-broken case. I have been able to use this as a sign that the compiler bug is probably biting.
I wouldn't take this as a reliable indicator, since no doubt there is a bona fide reason that the compiler would emit this NoChange code in certain situations. It's smoke, but not fire. . . . . ...j --- Matt Chotin <[EMAIL PROTECTED]> wrote: > I wish I could offer more, obviously it's a bug we'd rather not have. > If we > had a tool that showed the circularity we'd probably also have the > fix for > it :-) As for doing the wrong thing silently, we did not ship the > product > knowing that this case could happen. We thought the rare case was > the > compiler telling you there was a circularity at all, not binding > failing to > generate some of its code. > > > > I'm hoping that a lot of the work we're doing on the next version > will > address these kinds of issues. > > > > Matt > > > > _____ > > From: Eric Raymond [mailto:[EMAIL PROTECTED] > Sent: Friday, March 25, 2005 6:14 PM > To: [email protected] > Subject: [flexcoders] Re: Cyclical References > > > > > Apparently it's not so rare...! > > If you can't fix the problwm, perhaps there's a tool which will make > it easier to detect and/or track down these issues? > > Silently doing the wrong thing in some cases is not a great position > statement for a tools vendor. Of course I would care less about this > if the bug wasn't biting me now, but .... > > --- In [email protected], Matt Chotin <[EMAIL PROTECTED]> wrote: > >> > > Thanks to Joe for posting his workaround. As he says, this is > supposed to > > be a rare case which is why we did not re-write the compiler > > > > > > > > > Yahoo! Groups Sponsor > > > > ADVERTISEMENT > > <http://us.ard.yahoo.com/SIG=1292r5uv8/M=298184.6191685.7192823.3001176/D=gr > oups/S=1705007207:HM/EXP=1111889654/A=2593423/R=0/SIG=11el9gslf/*http:/www.n > etflix.com/Default?mqso=60190075> click here > > > > <http://us.adserver.yahoo.com/l?M=298184.6191685.7192823.3001176/D=groups/S= > :HM/A=2593423/rand=896517425> > > > > _____ > > Yahoo! Groups Links > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/flexcoders/ > <http://groups.yahoo.com/group/flexcoders/> > > * To unsubscribe from this group, send an email to: > [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > > * Your use of Yahoo! Groups is subject to the Yahoo! > <http://docs.yahoo.com/info/terms/> Terms of Service. > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
