#13882: Deal with a trivial case in dlx_solver
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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:
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Changes (by {'newvalue': u'Simon King', 'oldvalue': ''}):
* status: new => needs_review
* author: => Simon King
Comment:
The problem occurs in the add_rows method, if no rows are given: we would
then have an uninitialised vector_vector_int that is used in some c-level
function - and this is asking for trouble.
My suggestion: If the input is empty, then return before using the
uninitialized value.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13882#comment:2>
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