#19903: crash with MIP_Problem
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Reporter: vdelecroix | Owner:
Type: defect | Status: new
Priority: critical | Milestone: sage-7.0
Component: linear programming | Keywords:
Merged in: | Authors: Vincent Delecroix
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The following crashes Sage
{{{
sage: from sage.libs.ppl import Variable, Constraint_System, MIP_Problem
sage: x = Variable(0)
sage: y = Variable(1)
sage: cs = Constraint_System()
sage: cs.insert(x + y <= 2)
sage: MIP_Problem(2, cs, 0)
...
Unhandled SIGSEGV: A segmentation fault occurred in Sage.
}}}
If we replace `0` by `x` or `y` it also crashes... but with `x-x` or `x+y`
or `x+0`it is fine!
This is just a problem of types.
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Ticket URL: <http://trac.sagemath.org/ticket/19903>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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