#17414: patch Singular to avoid silent bugs
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Reporter: jakobkroeker | Owner:
Type: enhancement | Status: new
Priority: minor | Milestone: sage-6.5
Component: packages: standard | Keywords: Singular
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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1.An invalid assignment in Singular is ignored and produces only a
warning. This
shadowed at least a bug in Normal::genus():
http://www.singular.uni-kl.de:8002/trac/ticket/532#comment:5
I suggested that Singular should throw an error in case of an invalid
assignment. This suggestion was ignored upstream, so I propose to patch
Singular in Sage instead.
2.In some places of the Singular library code polynomial rings are
extended by variables with hardcoded names. In case of a name conflict,
variables are autorenamed. This may trigger bugs, as shown in
http://www.singular.uni-kl.de:8002/trac/ticket/508
Therefore I suggest to disable autorenaming (1) , throw an error in case
of a variable conflict (2) and fix the hardcoded variable names in
Singular in a long term.
(1) and (2) was declined upsteam; from my point of view mostly because of
hurted egos.
Therefore I propose to patch Singular used in Sage.
3. Check if some other Singular warnings are in fact errors and should be
handled that way.
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Ticket URL: <http://trac.sagemath.org/ticket/17414>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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