[Zope3-dev] --without-cycle-gc needed?

[Chris Withers]

Jeremy Hylton wrote:
> 
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x22e0a in visit_move (op=0x40294310, tolist=0xdfbf8c6c)
> >     at Modules/gcmodule.c:96
> > 96              node->gc.gc_prev->gc.gc_next = node->gc.gc_next;
> >
> > If I compile up python 2.2 with --without-cycle-gc, no trouble (so
> > far).  I was advised to bring this to everyone's attention...
> 
> Oh, you've got trouble alright.  You just don't have the garbage collector
> to catch it for you.
> 
> > Python 2.2 (#1, Feb 25 2002, 20:31:30)
> > [GCC 2.95.3 20010125 (prerelease)] on openbsd3
> > Type "help", "copyright", "credits" or "license" for more information.
> > >>> from Persistence.BTrees.OOBTree import OOBTree
> 
> This is the culprit.  I've been trying to track down the same bug in the
> BTrees code for the last several days.  The test suite doesn't provoke it,
> although it surely runs the garbage collector.  So the BTrees are
> experimental still, as in don't quite work.

This smells like the same thing that causes the Zope 3 Test Suite to explode
quite spectacularly for me on Windows....

Heylp! ;-)

Chris