#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: avoid regression | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9138, #11900
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Comment(by SimonKing):
Replying to [comment:78 vbraun]:
> Just as a remark from the side lines, it seems that consistently storing
a reference in the parent would be the cleanest solution.
But perhaps a difficult one. The condition that `register_action` must not
be used after defining any coercion is probably there for a reason.
> Perhaps the testsuite stuff can be used to verify that all parents do
that?
How could it? By hooking into the coercion model, look up any action there
and verify that all are registered?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:79>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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