bugGNU Octave - Bugs: bug #53487, Segmentation fault when executing...

 
 

bug #53487: Segmentation fault when executing a script containing a figure

Submitted by:  Guillaume <gyom>
Submitted on:  Tue 27 Mar 2018 04:43:05 PM UTC  
 
Category:  Plotting Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Fixed Assigned to:  None
Originator Name:  Guillaume Open/Closed:  Closed
Release:  dev Operating System:  GNU/Linux

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Thu 29 Mar 2018 04:30:43 AM UTC, comment #3: 

The cset works for me.  Marking as fixed and closing report.

Rik <rik5>
Project Administrator
Wed 28 Mar 2018 09:44:50 PM UTC, comment #2: 

I was able to reproduce the problem.  The following changeset seems to fix it for me:

http://hg.savannah.gnu.org/hgweb/octave/rev/b6aea95a7bf9

John W. Eaton <jwe>
Project Administrator
Tue 27 Mar 2018 04:56:26 PM UTC, comment #1: 

I attach a strack trace obtained with the current default "d0f9826f677d+".

(file #43699)

Guillaume <gyom>
Tue 27 Mar 2018 04:43:05 PM UTC, original submission:  

I'm reporting a segfault in the same vein than bug #44875 so it might be hard for others to reproduce.

If I run this executable:

#!/usr/bin/octave -fqH

F = figure ("Visible","off");
axes ("Parent",F);
uicontrol (F);

set (findobj (F,"FontUnits","points"),"FontUnits","normalized");
set (F,"Visible","on");

I get a segfault each time with 4.2.1:

> ./testfig
warning: base_graphics_object::get_properties: invalid graphics object
terminate called after throwing an instance of 'std::bad_cast'
  what():  std::bad_cast
panic: Aborted -- stopping myself...
attempting to save variables to 'octave-workspace'...
panic: attempted clean up failed -- aborting...
octave exited with signal 6

and a segfault about one in ten times with 4.5+:

> ./testfig
warning: base_graphics_object::get_properties: invalid graphics object
fatal: caught signal Segmentation fault -- stopping myself...
Segmentation fault (core dumped)

The script was initially much longer but I reached the point where it doesn't crash any more if I remove a single line. Not sure each of them is necessary as it might just be a race condition.

I couldn't initially reproduce it from the Octave command line but just noticed I actually can if I paste all of the above followed by delete(F):

F = figure ("Visible","off");
axes ("Parent",F);
uicontrol (F);

set (findobj (F,"FontUnits","points"),"FontUnits","normalized");
set (F,"Visible","on");
delete (F);

Guillaume <gyom>

 

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Attached Files
file #43699:  stacktrace.txt added by gyom (14KiB - text/plain)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-03-29 rik5 StatusReady For Test => Fixed
        Open/ClosedOpen => Closed
    2018-03-28 jwe StatusNone => Ready For Test
    2018-03-27 gyom Attached File- => Added stacktrace.txt, #43699

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