#17785: crash in matrix.subs
---------------------------------------+------------------------
Reporter: cnassau | Owner:
Type: defect | Status: new
Priority: minor | Milestone: sage-6.5
Component: algebra | Resolution:
Keywords: crash, substitution | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
---------------------------------------+------------------------
Comment (by vdelecroix):
Hello,
This is actually unrelated to matrices
{{{
sage: a22.subs(None,a11=a13,a21=-a23,a31=a33,a22=0)
...
------------------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Sage will now terminate.
------------------------------------------------------------------------
}}}
(and as a sided remark, it is useless to declare the variables with `var`;
the command `var` creates variables in the symbolic ring which have
nothing to do with the variables of the polynomial ring)
Vincent
--
Ticket URL: <http://trac.sagemath.org/ticket/17785#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
