bugGNU Octave - Bugs: bug #40812, glpk should avoid integer overflow...


bug #40812: glpk should avoid integer overflow when Octave uses 64-bit indexing

Submitted by:  John W. Eaton <jwe>
Submitted on:  Wed 04 Dec 2013 07:56:30 PM UTC  
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Other
Status:  None Assigned to:  None
Originator Name:  jwe Open/Closed:  Open
Release:  dev Operating System:  Any

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Wed 04 Dec 2013 07:56:30 PM UTC, original submission:  

GLPK uses integer variables for problem dimensions, but Octave is storing octave_idx_type values in those variables.   This can cause trouble if Octave is compiled with 64-bit indexing and someone passes large arrays to glpk.  The changes required should be similar to what was done in this changeset


for similar problems with Qhull.

It would probably be best to generalize the "octave_qhull_dims_ok" function and avoid duplicating it in multiple files.

John W. Eaton <jwe>
Project Administrator


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