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

 
 

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

Submitter:  John W. Eaton <jwe>
Submitted:  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
Fixed Release:  None Planned Release:  None
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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

http://hg.savannah.gnu.org/hgweb/octave/rev/ac74b0c4c564

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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