bugGNU Octave - Bugs: bug #60007, subsref indexing: No access to...


bug #60007: subsref indexing: No access to protected items in handle class destructor

Submitted by:  Philipp Sibler <philsee>
Submitted on:  Thu 04 Feb 2021 09:41:17 PM UTC  
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  None Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  6.1.0 Operating System:  Microsoft Windows

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Thu 04 Feb 2021 09:41:17 PM UTC, original submission:  

I generate several objects of a handle class. The destructor in this handle class calls the protected method 'sendCommand' defined wihtin the same class.

Case 1: When clearing the objects individually ("clear myObj1, clear myObj2, ..."), the destructor each time is getting called properly, no problems.

Case 2: When I clear the entire environment with a "clear all" I get the following warning for each destructed class object:

warning: error caught while executing handle class delete method:
subsref: method 'sendCommand' has protected access and cannot be run in this context

Code example to force the issue

classdef myClass < handle

     function obj = myClass()


     function delete(obj)
     function sendCommand(obj, cmd)
       fprintf('sendCommand called!\n');

Philipp Sibler <philsee>


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