#13882: Deal with a trivial case in dlx_solver
-----------------------------------------+----------------------------------
Reporter: SimonKing | Owner: sage-combinat
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.6
Component: combinatorics | Resolution:
Keywords: dlx_solver nr_columns | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Simon King | Merged in:
Dependencies: | Stopgaps:
-----------------------------------------+----------------------------------
Comment (by SimonKing):
Replying to [comment:4 fbissey]:
> With your change the following in combinat/tiling.py will have to be
changed
> {{{
> sage: from sage.combinat.matrices.dancing_links import
dlx_solver
> sage: rows = []
> sage: x = dlx_solver(rows)
> sage: x.search() # not tested
> BOOM !!!
> }}}
Why? It still goes "BOOM". Actually, the fix from here is responsible for
the fact that in the debug version the line `x = dlx_solver(rows)` does
not crash. But the segfault in `x.search()` will still occur.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13882#comment:5>
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 post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
