[Zope-dev] Infuriating ZClass registry Heisenbug

[Evan Simpson]

More data:

It may well be loading correctly, but it seems to be storing 
incorrectly.  I managed to grab the ZGlobals pickle string, and it has 
the _zclass_ stored as a plain class instead of an oid.

I copied the commented-out Python persistent_id() in ZODB/Connections.py 
into a method called test_persistent_id(), and compared its results with 
coptimizations' new_persistent_id.  They matched for everything except 
_zclass_ objects, for which test_persistent_id returned the _p_oid and 
new_persistent_id returned None.  I have no idea why this is.  It would 
explain why the _zclass_es are stored wrongly, but not why everyone else 
isn't seeing major breakage.

Argh,

Evan @ 4-am