#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:5 ncohen]:
> It seems weird that the loglevel has to be stored in *BOTH* iocp and
smcp `O_o` Isn't just one of them necessary ?
`glp_simplex` doesn't take `iocp` parameters.
> Isn't there a "GLPK way" to copy the content of a scmp object ? It would
be nice to let GLPK do the job, or we would have to create a new variable
each time we expose a new parameter
Even if true, and it probably is, that would still be overkill, given our
current setup. The `smcp` and `iocp` structures are created in `__cinit__`
regardless of whether we're copying or creating. If the `copy` function
were then to invoke GLPK's copy constructor (or whatever) then we would be
creating the same thing twice, merely to avoid setting two parameters
directly?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12309#comment:6>
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