bugGNU Octave - Bugs: bug #63186, function handle in constructor of...


bug #63186: function handle in constructor of a class

Submitter:  Guillaume <gyom>
Submitted:  Sat 08 Oct 2022 08:29:28 PM UTC
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Unexpected Error or Warning
Status:  None Assigned to:  None
Originator Name:  Guillaume Open/Closed:  * Open
Release:  * dev Operating System:  * Any
Fixed Release:  None Planned Release:  None
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Sat 08 Oct 2022 08:29:28 PM UTC, original submission:  

If a function handle of a class is used in its constructor, the class seems to be broken afterwards. I attach a slightly contrived example that reproduces the issue:

>> s = classbug ("gnu octave");
>> s = classbug ({"gnu octave"});
>> s = classbug ("gnu octave");
error: no indexing!
error: called from
    subsref at line 17 column 7
    classbug at line 10 column 18

As you can see, after executing the second statement (that makes use of a function handle to the class), the first statement doesn't execute properly any more, with subsref() being called inappropriately. It works if "cellfun ('classbug',...)" is used instead of "cellfun (@classbug,...)".

Guillaume <gyom>


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Attach Files:

Attached Files
file #53817:  classbug.m added by gyom (486B - text/x-objcsrc)


Depends on the following items: None found

Items that depend on this one: None found


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    Follows 1 latest change.

    Date Changed by Updated Field Previous Value => Replaced by
    2022-10-08 gyom Attached File- Added classbug.m, #53817

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