From: Archie Cobbs (archie@whistle.com)
Date: Tue Sep 15 1998 - 13:52:38 EDT
Godmar Back writes:
> "Such problems are in fact extremely rare with existing compilers.
> Conservative garbage collection is commonly used with conventional
> unmodified optimizing compilers, and to our knowledge, the above problems
> have only been observed in examples contrived for the purpose."
Alternately, couldn't you just make the GC mask off the lower N bits
of each potential pointer before checking whether it's possibly valid?
This makes it more conservative, but proabaly not by that much in practice.
-Archie
___________________________________________________________________________
Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com
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