#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 nbruin):
Replying to [comment:24 SimonKing]:
> Of course. As long as `P=GF(31)['x']` lives, its base ring will live,
too. The question is why the polynomial ring can't be collected. So,
perhaps it would be better to try and find a chain for the polynomial ring
instead.
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.
--
Ticket URL: <http://trac.sagemath.org/ticket/18905#comment:26>
Sage <http://www.sagemath.org>
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