#14471: Exception KeyError: in WeakValueDictionary remove ignored
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Reporter: vbraun | Owner: rlm
Type: defect | Status: new
Priority: major | Milestone: sage-5.10
Component: memleak | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by vbraun):
Replying to [comment:6 nbruin]:
> Replying to [comment:5 vbraun]:
> > So the weakvaluedict (self.data) is in a bad state...
>
> `self.data` is a normal dict. Your example doesn't quite show the dict
is in a "bad state".
Fair enough, but even after I catch the !KeyError the `wr.key in
self.data.keys()` is still `True`. So the `self.data` dict is in a weird
place for sure.
I agree that this smells like something else is mutating `self.data` in-
between. It is possible that deallocation somewhere triggers a call to
`CachedRepresentation`, but I don't see where that would be the case.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14471#comment:7>
Sage <http://www.sagemath.org>
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