Re: [Sbcl-devel] Instances being obsoleted in the middle of a method call

[Nikodemus S. <nik...@ra...>]

On 9/8/07, Kevin Reid <kp...@ma...> wrote:

> Suppose the above is loaded, the class definition is edited in the
> file, and then:
>
>    (enqueue #'reload (queue *event-loop*))
>    (top)

This is actually not problematic as such -- only in certain cases. (I think this
is clear to everyone, but just to clarify.)

The restrictions are:

 * Don't CHANGE-CLASS or redefine classes in the middle of a GF call so that the
   set of applicable methods changes.

 * Don't CHANGE-CLASS or redefine classes in the middle of a GF call is a method
   of that call is going to access slots of the altered instance after the
   alteration.

Cheers,

 -- Nikodemus