[Tim Peters] > ... > The good news is that, while it was hard to find, it's a one-line repair.
Alas, that wasn't the end of it either. I think I'm at the end now, and all the tests are passing again (including new tests to provoke new problems I found). A savepoint (of the data manager Connection flavor) remembers the TmpStore index at the time the savepoint was made. When a savepoint could be used only once, the savepoint only needed to make sure it had a copy of the index at the time the savepoint was _made_. But when a savepoint can be reused, even the TmpStore.reset() line self.index = index was a source of subtle bugs (later mutations to `self.index` showed up in `index` too, and `index` there is typically taken from a savepoint's "this is what the world looked like when I was new" state -- mutating that was harmless before because the rollback could never be used again, but became disastrous when allowing re-use). _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev