#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 nbruin):
Replying to [comment:16 vbraun]:
> Isn't this super-dangerous, changing the hash can potentially give you
wrong results.
Experience shows you don't have to change hashes for that, but yes, feel
free to up the severity of the ticket if you feel strongly about this.
>Also, I thought it is already wrong to make the bare class (not
_with_category) accessible through parent()? Of course that ought to be
spelled out in the documentation.
I think the system just gets tricked into that here and I think it's
unavoidable: If I remember correctly, the category initialization gets
delayed for efficiency reasons. Fixing that would probably cause
unacceptable loss of performance in other places.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14471#comment:17>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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