#11339: Illegal use of __deallocate__ in cython (pyx) code
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Reporter: gagern | Owner: drkirkby
Type: defect | Status: needs_info
Priority: major | Milestone: sage-4.7.1
Component: algebra | Keywords: sd31
Work_issues: | Upstream: N/A
Reviewer: François Bissey, Steven Trogdon | Author: Volker Braun,
Martin von Gagern
Merged: | Dependencies:
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Comment(by vbraun):
Replying to [comment:33 malb]:
> The API is as follows: `pXXX` does assume the `currRing` to be set,
whereas `p_XXX` does not. However, sometimes there are bugs, i.e. you call
`p_XXX` and it crashes unless `currRing` is set.
I guessed that much, but a documented list of exceptions to that rule
might be nice :-)
> TBH, I don't like this blanket approach, did you run into specific
problems? If so, I'd add a check to those functions instead of hiding bugs
by forcing the ring.
In principle I agree, but its probably more productive to first produce a
working version and then see if it still works if we remove the blanket
`rChangeCurrRing`. Right now I'm not sure if that is the underlying
problem. I didn't find any 100% reliable testcase but in some cases adding
the extra ring switch fixed segfaults, but only to reappear in other
places.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11339#comment:34>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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