More radical ideas about gc and reference counting

[bearophile via Digitalmars-d]

Andrei Alexandrescu:

> I, too, felt the need of onGC() - actually preGC() - in my 
> allocators implementation.
> ...
> A hook that nulls all freelist heads just as the collection 
> process starts would be helpful.

How is this going to help increase tracing precision of unions 
(and Algebraic built on top of unions)?

Bye,
bearophile