Make sure to call each invariant only once when validating invariants. Previously, invariants could be called multiple times because when an invariant is defined in an interface, it's found by in all interfaces inheriting from that interface. See pull request 215.
5.1.1 (2020-09-30)
Fix the method definitions of IAdapterRegistry.subscribe, subscriptions and subscribers. Previously, they all were defined to accept a name keyword argument, but subscribers have no names and the implementation of that interface did not accept that argument. See issue 208.
Fix a potential reference leak in the C optimizations. Previously, applications that dynamically created unique Specification objects (e.g., used @implementer on dynamic classes) could notice a growth of small objects over time leading to increased garbage collection times. See issue 216.
This leak could prevent interfaces used as the bases of other interfaces from being garbage collected. Those interfaces will now be collected.
One way in which this would manifest was that weakref.ref objects (and things built upon them, like Weak[Key|Value]Dictionary) would continue to have access to the original object even if there were no other visible references to Python and the original object should have been collected. This could be especially problematic for the WeakKeyDictionary when combined with dynamic or local (created in the scope of a function) interfaces, since interfaces are hashed based just on their name and module name. See the linked issue for an example of a resulting KeyError.
Note that such potential errors are not new, they are just once again a possibility.
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Bumps zope-interface from 5.1.0 to 5.1.2.
Changelog
Sourced from zope-interface's changelog.
Commits
375f39bPreparing release 5.1.25cb7ffdMerge pull request #215 from minddistrict/masterca5b7e0Merge branch 'master' of github.com:zopefoundation/zope.interface into master3fc878eUse queryDirectTaggedValue to find invariants removes the need to keep track ...856ee60Fix rst syntax/line folding.93efea7Back to development: 5.1.2e01173bPreparing release 5.1.18d3c802Merge pull request #217 from zopefoundation/issue2168cf31ebAdd info on the interaction of weakrefs and interface hashing.64fb805Use an internal method for validating invariants, so we don't taint the publi...Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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