Re: [g-a-devel]Gail Crashes

["Padraig O'Briain" <Padraig Obriain sun com>]

This probtlem sems to be similar to that reported in bug 76059.

I am at a disadvantage as I do not have a reproducible test case. If someone 
could supply a redocuible testcase I would be grateful.

Padraig


> If you guys can fix this before Guadec it'd be great.  I'll be off-line for 
> a couple days, and it's causing the stack to crash when applications exit 
> and return to the panel.  If it was fixed, then the demo would be much more 
> seemless and smooth.
> 
> Marc
> 
> 
> can fix this
> At 01:47 PM 3/31/2002 +0100, Bill Haneman wrote:
> >Hi Marc:
> >
> >Thanks, I think I understand the problem now.  If we are faking
> >focus events then I do think we might need to ref the widget
> >first, but it's not clear how/when we ensure that an
> >appropriate unref is done.  At the moment a GtkAccessible
> >does not seem to hold a ref to its widget, which may or
> >may not be a problem.  However on receipt of the
> >"destroyed" signal we are setting the 'widget' field of
> >gailwidget to NULL, which is something that subsequent
> >gail API is supposed to check for.
> >
> >So from a quick glance it appears that we are connecting to
> >"destroyed" and doing the right thing, but I haven't had time to
> >examine the stack trace and diagnose what's really going wrong.
> >It may be that holding a ref to gtkwidget would make sense here
> >but it doesn't appear to be our current strategy.
> >
> >Do we need to fix this before the GUADEC demos?  I would prefer to
> >get Padraig in on this discussion before we go any further.
> >
> >Regards,
> >
> >Bill
> >
> >
> >Marc Mulcahy wrote:
> > >
> > > Bill:
> > >
> > > The problem here is that the GtkWidget pointer we hold still has a
> > > reference in it, but the actual GtkWidget structure it points to is
> > > gone.  So, when we call gtk_widget_get_accessible, things go wrong.
> > >
> > > If we ref the widget, is that enough?  WE don't want to prevent the widget
> > > from being destroyed, we just want to be notified when it is destroyed.
> > >
> > > Maybe weakrefs are the answer...
> > >
> > > Marc
> > >
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