D GC theory

[ketmar via Digitalmars-d]

On Tue, 24 Feb 2015 15:22:01 +0000, Sativa wrote:

> Free pointers are more difficult as they can, say, be randomly initiated
> and point to anywhere on the heap and have to be looked in a locked way.
> (to prevent them changing in the middle of some GC operation)

and they can live in CPU register... ooops.
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