#11521: Memleak when resolving the action of Integers on an Elliptic Curve
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Reporter: jpflori | Owner: robertwb
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.8
Component: coercion | Keywords: sd35
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #11900 #715
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Comment(by SimonKing):
I got it!!
By #715, both the keys and the value of
`sage.structure.coerce_dict.TripleDict` are by weak reference -- if
possible. If the value does not allow for a weak reference, then (to
simplify code) a constant function is used instead.
Actions are stored in such `TripleDict`s. However, an `IntegerMulAction`
can not be weakly referenced. Hence, there is a strong reference, and no
garbage collection can occur (the value points back to the keys, hence,
they can't be collected either).
Solution: Make `IntegerMulAction` weakly referenceable! That should
suffice.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11521#comment:74>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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