#8177: Breaking Integer's invariant can lead to a segfault in Sage 4.3.2.alpha1,
Mac OS X 10.6.2
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Reporter: mvngu | Owner: tbd
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.3.3
Component: doctest | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by hivert):
* author: Florent Hivert =>
Comment:
> No, it means that, with #8200, I have done my part at fixing my improper
usage of ZZ. But the issue that such an improper usage can cause a
segfault is still there, and I leave to the experts the decision of
whether to fix it now, leave it to later, or resolve it as wontfix.
>
> I personally vote -1 for making it a wontfix.
I strongly second Nicolas -1.
Moreover, if the segfault is not removed the invariant
{{{
x.parent() == ZZ <==> x.class == Integer
}}}
must be clearly stated with a _big warning_ in the doc. My opinion is that
the segfault must be left only if there is a very large performance
penalty fixing it.
By the way is this invariant an equivalence ? As far as I understood the
segfault only came because we where breaking the {{{==>}}} part.
Cheers,
Florent
By the way, I've removed myself as author since I won't be hacking in
integers (my work in integrated in #8200).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8177#comment:11>
Sage <http://www.sagemath.org>
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