#5838: crash in Singular's polynomial gcd
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Reporter: cwitty | Owner: malb
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: commutative | Resolution:
algebra | Merged in:
Keywords: | Reviewers:
Authors: Ralf Stephan | Work issues:
Report Upstream: N/A | Commit:
Branch: | 1b91e8a85a560b02f9feebadea713a79a6b3ebfa
u/rws/crash_in_singular_s_polynomial_gcd| Stopgaps:
Dependencies: |
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Comment (by rws):
Replying to [comment:11 jakobkroeker]:
> Question:
>
> why there was a crash in Singular's polynomial gcd and how it got fixed?
>
> It is not obvious for me...( I'm new to sage and do not yet understand
everything)
The crash was quite old (5 years ago) and presumably happened because of
an old Singular version. This triggered an unpickling crash. Pickling is
the Python name for serialization, see
https://en.wikipedia.org/wiki/Serialization
I admit the doctest tests the unpickling issue, i.e., the symptom not the
cause. OTOH it has the potential to catch a lot of other bugs. The bug
itself was probably fixed by a newer Singular version.
--
Ticket URL: <http://trac.sagemath.org/ticket/5838#comment:12>
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