Proposal: GC and "delete"

[Brian White]

Would it be possible to add a lightweight flag to the GC module to 
detect if the GC was currently running?  That would allow an object to 
conditionally delete sub-objects only if it was safe to do so (i.e. only 
if not being deleted by the GC).

Alternatively, the "delete" could just do nothing at all during a GC 
pass.  This would probably be the safest solution.

-- Brian