#12309: GLPK crashes or hangs on certain inputs
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Reporter: john_perry | Owner: ncohen
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: linear programming | Keywords:
Work_issues: | Upstream: Reported upstream.
Developers deny it's a bug.
Reviewer: | Author:
Merged: | Dependencies: #10785
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Comment(by john_perry):
Replying to [comment:7 ncohen]:
> * First, I guess that ``self.scmp`` behaves like ``self.iocp`` and
should also be deallocated in ``__dealloc__``
Duh. :-)
> * Could you add a doctest that shows the signal returned by your
code when a bad lp is solved without the preprocessing flag, and how it is
solved afterwards ?
Wow, thanks! I didn't think I could get one that small easily. I will
replace the doctest I added with that one instead.
> I also believe the documentation you added about the ``preprocessing``
flag is worth being in a .. WARNING:: environment. This way it'll appear
in red in the HTML documentation, and should attract the attention of
somebody having some troubles with GLPK. That's up to you `:-)`
That's perfect; I wasn't really aware of it.
> Sorry if I am being a little slow, there are several nasty patches
needing attention at the same time (not to mention the awful CBC one) and
"free time" is a long-forgotten dream these days `O_o`
I know what you mean, and I'm not complaining. If a couple of weeks
passed, I'd more likely post a request at sage-devel anyway.
Thanks a lot!
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12309#comment:8>
Sage <http://www.sagemath.org>
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