[Octave-bug-tracker] [bug #33216] cell2struct does not allow to create an empty struct

[Jordi Gutiérrez Hermoso]

Update of bug #33216 (project octave):

                  Status:               Confirmed => In Progress            
             Assigned to:                    None => jordigh                
                 Release:                   3.4.0 => 3.6.1                  
        Operating System:                  Mac OS => Any                    

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Follow-up Comment #6:

Happy belated birthday, bug #33216

This is a very, very corner case. I'd be surprised if anyone other than Jochen
Weber has ever run into this.

The issue is that dim_vector::redim will pad with 0 instead of 1 if all of the
dimensions of the dim_vector are 0. When you do cell(0,0,1), this in fact is
equivalent to cell(0,0) since singleton dimensions are chopped, so it's a cell
with all zero dimension vector. The rest of the cell2struct code assumes redim
will pad with ones, but in this case it won't. When this assumption breaks in
the assertion, you get a SIGABRT or whatever the OS in question does with
failed assertions.

I'm working on a fix.

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