bugGNU Octave - Bugs: bug #60144, output struct not always defined


bug #60144: output struct not always defined

Submitted by:  Jim Van Zandt <vanzandtj>
Submitted on:  Mon 01 Mar 2021 01:26:13 AM UTC  
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Unexpected Error or Warning
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  Closed
Release:  6.2.0 Operating System:  GNU/Linux

Add a New Comment (Rich Markup)

You are not logged in

Please log in, so followups can be emailed to you.


Mon 01 Mar 2021 05:47:40 PM UTC, comment #2: 

I checked in the fix on the stable branch here: http://hg.savannah.gnu.org/hgweb/octave/rev/ce425b657693.

Marking as fixed and closing report.

Rik <rik5>
Project Administrator
Mon 01 Mar 2021 05:18:11 AM UTC, comment #1: 

Confirmed.  In fact, there is also a fifth possible output, fjac, which is also not set if an output function stops fsolve in the initialization procedure.  If I add

fjac = NaN;

at fsolve.m:261 then this case also passes.

Would you like to be credited in the Mercurial Changelog and in the list of contributors at the start of the Octave manual, or do you want me to just check in the patch under my credentials?

Rik <rik5>
Project Administrator
Mon 01 Mar 2021 01:26:13 AM UTC, original submission:  

fsolve is called with four outputs and an output function stops it, an error is generated because the fourth output is never set.

The first attachment is a function that exercises the bug.  Its output is:
octave:8> stop_bug_demo
respects output function stop flag...error: 'output' undefined near line 177, column 177
error: called from
    fsolve at line 258 column 7
    stop_bug_demo at line 17 column 26

The second attachment is a simple patch that fixes the bug.

Jim Van Zandt <vanzandtj>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #50952:  stop_bug_demo.m added by vanzandtj (2KiB - text/x-objcsrc)
file #50953:  output-patch added by vanzandtj (643B - application/octet-stream)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by rik5 (Posted a comment)
  • -email is unavailable- added by vanzandtj (Submitted the item)

    Do you think this task is very important?
    If so, you can add your encouragement to it.
    This task has 0 encouragements so far.

    Only project members can vote.




    Follow 8 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2021-03-01 rik5 StatusPatch Reviewed => Fixed
        Open/ClosedOpen => Closed
    2021-03-01 rik5 Item GroupNone => Unexpected Error or Warning
        StatusConfirmed => Patch Reviewed
        Release6.1.0 => 6.2.0
    2021-03-01 rik5 StatusNone => Confirmed
    2021-03-01 vanzandtj Attached File- => Added stop_bug_demo.m, #50952
        Attached File- => Added output-patch, #50953

    Back to the top

    Powered by Savane 3.7