[Octave-bug-tracker] [bug #57709] Octave crashes when changing sub-structure that is viewed in Variable Editor

[Dennis]

URL:
  <https://savannah.gnu.org/bugs/?57709>

                 Summary: Octave crashes when changing sub-structure that is
viewed in Variable Editor
                 Project: GNU Octave
            Submitted by: dizze
            Submitted on: Fri 31 Jan 2020 01:25:59 PM UTC
                Category: GUI
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.1.90
        Operating System: Microsoft Windows

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Details:

This bug is troubling me for a while now and I hoped it would be solved in
v.5.1.90. It is not. It is present in v4.4.1 and up.

The bug has a lot of resemblance with bug id #53858. However, the example
provided there doesn't crash the GUI, but causes an endless loop. The example
below actually causes a crash of the GUI

Method to reproduce:

clear all
a.b{1} = {1 2 3};
a.b{2} = {2 3};
a.b{3} = [];
openvar a;
% Double-click the  "a.b" cell to open a new Variable Editor panel
% Double-click the  "a.b{1}" cell to open a new Variable Editor panel
a.b{1} = [];

The last entry causes Octave to crash (tested in Windows).




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