#715: Parents probably not reclaimed due to too much caching
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Reporter: robertwb | Owner: somebody
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.8
Component: coercion | Keywords: weak cache coercion
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9138, #11900
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Changes (by jpflori):
* status: needs_review => needs_work
Comment:
With sage4.8.alpha5 plus #9138 #11900 #1115 #715 and #11521 applied some
tests fail, namely in the files:
- sage.rings.padic.padic_base_generic_element.pyx (1 test failed) but did
NOT when rerun and did again the next time,
- sage.rings.number_field.number_field.py (1) and did NOT again,
- sage.structure.coerce.pyx (5) and did again,
- sage.algebras.quatalg.quaternion_algebra.py (1) and did again once and
then did NOT again,
- lots of them in sage.homology.* (20+25+50+93+1) and did again.
The random behavior of some of the above tests fails with:
- IndexError: list index out of range (padic)
- Attribute Error: QuaternionAlgebra_abstract_with_category object has no
attribute _a (quatalg)
and at some point in the stack TripleDicts of the coercion model are
present.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:69>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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