id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	lang	patch	platform
194	Review overriddable vtable interfaces	whiteknight	whiteknight	"we should go through the list of vtable interfaces to make sure we are allowing overrides on all the interfaces that we need to use. Here is a list of vtable interfaces that currently don't appear to support overriding:

{{{
init
init_pmc
destroy*
mark*
get_attr_keyed
set_attr_keyed
can
isa_pmc
isa
does
does_pmc
type*
invoke (we have it, but it doesn't work correctly)
visit*
thaw*
thawfinish*
share_ro*
}}}

I've marked with a * some of the vtable entries above that really can't be overridden in PIR or that don't make sense to be. Are there any others from this list that should be overridable?

And while I'm at it, are there any methods currently that are overridable, but really shouldn't be?

"	RFC	closed	normal		core		medium	wontfix	pmc pir override				all