[ZODB-Dev] transaction exception-related reference leaks

[Chris McDonough]

This patch has been applied to the trunk.

- C

On Mon, 2010-09-13 at 04:33 -0400, Chris McDonough wrote:
> I noticed some weird behavior with exceptions and transactions recently
> (in particular, a WSGI server which relies on a __del__ to close its
> client connection wasn't disconnecting from the client immediately when
> a conflict error was raised by ZODB, but would indeed disconnect if a
> conflict error had not been raised).
> 
> I tracked this down to the zope transaction module leaking frame stacks
> via retrieving traceback objects from sys.exc_info() without
> subsequently removing them from local scope.
> 
> With the attached patch, the issue was solved.  If no one complains,
> I'll apply it to the transaction trunk.
> 
> 
> - C
> 
> 
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