[Zope] Mysterious crash with Zope 2.4.x

[Berthold Stöger]

I wrote:

> Update:
> Python crashes in PyObject_Hash on an PyObject with ob_type==NULL.
> Probably an error in our session manager, triggered only with DTML. I
> just cant figure out where such an object is created. :P
>
> So, ignore my message until i find out more... 

Ok, found the bug. The type of the typeobject of the sessionclass was not
correctly set. Now I get an access violation on the get() method, but that's
better than a crash.

Sorry for the noise.