#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: Get some timings | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9138, #11900
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Comment(by SimonKing):
First of all, in my current patch, I forgot the case `k1 is k2`: In that
case, I would decrement the reference count twice for the same object.
However, even when I avoid it, I get a double free.
I wonder: Could the double free result from the fact that I do `del
self.key_buckets[h][i:i+3]` when the reference count for
`self.key_buckets[h][i]` is already zero? Or would that be no problem?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:120>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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