#13922: Avoid a regression in the creation of homsets
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Reporter: SimonKing | Owner: tbd
Type: defect | Status: new
Priority: critical | Milestone: sage-5.6
Component: performance | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: #715 | Stopgaps:
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Comment (by SimonKing):
Replying to [comment:8 vbraun]:
> About the caching, is the problem that the cache gets deleted too
quickly?
Have we been using weak references to cache homsets prior to #715?
> Between two evaluations of the lambda there is nothing that holds a
reference to the symbolic expression. So all coercion caches should be
free to be garbage collected.
Here is the problem:
{{{
QQ.gcd(3.14159,2*3.14159)
}}}
creates two times `Set of Homomorphisms from Integer Ring to Real Interval
Field with 64 bits of precision in Category of euclidean domains`. So, no
symbolics involved at this point.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13922#comment:9>
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