id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	lang	patch	platform
1531	[DEPRECATION] Parrot_VTABLE	plobsing		"Parrot_VTABLE, as part of parrot's API does not provide functionality that should be used outside of parrot's core. The only functions using this type are:
 * Parrot_get_vtable() - get the vtable for a PMC type
 * Parrot_PMC_set_vtable() - reset the vtable for a PMC

The only conceivable use for this would be type-casting PMCs, but this is not a commonly advised practice with PMCs.

I can imagine that an API to allow vtable overrides could be created out of this, however, that kind of operation may not be appropriate for this API (knowledge of vtable signatures implies knowledge of core), and this functionality should be added only when and if the need arises."	deprecation	closed	normal	2.5	none	2.2.0	medium	fixed