* real if the array needs to be modified in some way. Functions that
* modify fake AVs check both flags to call av_reify() as appropriate.
*
* real if the array needs to be modified in some way. Functions that
* modify fake AVs check both flags to call av_reify() as appropriate.
*
* items that go on the stack are never refcounted.)
*
* These internal details are subject to change any time. AV
* items that go on the stack are never refcounted.)
*
* These internal details are subject to change any time. AV