bugGNU Octave - Bugs: bug #42424, crash when "find" on...


bug #42424: crash when "find" on sparse matrices is given at least 6 return-values

Submitter:  David Spies <dspyz>
Submitted:  Sun 25 May 2014 11:09:50 PM UTC
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * dev Operating System:  * Any
Fixed Release:  None Planned Release:  None
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Wed 25 Nov 2015 09:33:21 PM UTC, comment #3: 

Even without the more comprehensive fix, there is no need for Octave to segfault just because an extra 6th argument was passed to find.  I corrected that problem alone on the stable branch here (http://hg.savannah.gnu.org/hgweb/octave/rev/f819397c0bc1).  Closing this report, but leaving bug #42425 open.

Rik <rik5>
Group administrator
Tue 10 Feb 2015 07:33:02 PM UTC, comment #2: 

A patch was supplied, it just nead some testing.

Doug Stewart <dastew>
Sun 25 May 2014 11:17:53 PM UTC, comment #1: 

This and bug 42425 are both fixed by calling find with a comprehensive dispatch function that handles all the types in the same way.  Here's my patch (18794 at https://dspyz@bitbucket.org/dspyz/octave on top of 18791-18793 in my previous two bugfixes).

(file #31438)

David Spies <dspyz>
Sun 25 May 2014 11:09:50 PM UTC, original submission:  

Exactly what it says on the tin:

octave:1> [a,b,c,d,e,f] = find(speye(3));
panic: impossible state reached in file 'corefcn/find.cc' at line 221
panic: Aborted -- stopping myself...
attempting to save variables to 'octave-workspace'...
save to 'octave-workspace' complete
octave exited with signal 6

David Spies <dspyz>


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Attach Files:

Attached Files
file #31438:  dispatch.diff added by dspyz (16KiB - text/x-patch)


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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2015-11-25 rik5 StatusNone Fixed
        Open/ClosedOpen Closed
    2014-05-25 dspyz Attached File- Added dispatch.diff, #31438

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