#18905: fix more leaks found in #18897
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Reporter: dimpase | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.8
Component: memleak | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #18897 | Stopgaps:
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Comment (by SimonKing):
Replying to [comment:26 nbruin]:
> OK, the finite field caches under `algebraic_closure` in its dict a
`CachedMethodCaller` that references a `PseudoConwayLattice` object that
in its `__dict__` has a ring that is the polynomial ring. That's a
reference chain from the finite field to the polynomial ring, preventing
the polynomial ring from being deallocated.
And, by comment:19, it prevents the base ring from collection, because it
is not simply a cyclic reference, but a strong reference from a weak value
dictionary to one of its keys.
--
Ticket URL: <http://trac.sagemath.org/ticket/18905#comment:28>
Sage <http://www.sagemath.org>
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