#12215: Memleak in UniqueRepresentation, @cached_method
--------------------------------------------------------------+-------------
Reporter: vbraun | Owner:
Type: defect | Status:
needs_work
Priority: major | Milestone:
sage-5.0
Component: memleak | Resolution:
Keywords: UniqueRepresentation cached_method caching | Work issues:
Keep the fix from #12313. Coercion in symmetric function algebras
Report Upstream: N/A | Reviewers:
Authors: Simon King | Merged in:
Dependencies: #11115 #11900 #12645 #11599 | Stopgaps:
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Comment (by SimonKing):
The failure is really strange. If one does
{{{
sage: S = SymmetricFunctions(ZZ)
sage: S.inject_shorthands()
sage: e.has_coerce_map_from(m)
}}}
on the command line, then one gets the answer "True". Doing the same in a
''separate'' doctest, one still gets "True". But doing the same in line
384 of sage.combinat.sf.sf.py, one gets "False". So, there seems to be a
nasty diffcult-to-debug side effect, which apparently was introduced by
the second patch.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12215#comment:85>
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