[Octave-bug-tracker] [bug #58617] cell2struct silently truncates char matrices

[Kai Torben Ohlhus]

URL:
  <https://savannah.gnu.org/bugs/?58617>

                 Summary: cell2struct silently truncates char matrices
                 Project: GNU Octave
            Submitted by: siko1056
            Submitted on: Fri 19 Jun 2020 04:31:55 AM CEST
                Category: Interpreter
                Severity: 2 - Minor
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: BSD

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Details:

A subtle truncation happens when calling


containers.Map(['foo';'bar';'baz'], [1,2])


https://lists.gnu.org/archive/html/octave-maintainers/2020-06/msg00088.html

The cause is that cell2struct allows the following:

Octave 6.0.1:


>> cell2struct({[1,2]}, {['foo','bar','baz']})
ans =

  scalar structure containing the fields:

    foobarbaz =

       1   2


>> cell2struct({[1,2]}, {['foo';'bar';'baz']})
ans =

  scalar structure containing the fields:

    foo =

       1   2


while Matlab R2020b does not:


>> cell2struct({[1,2]}, {['foo','bar','baz']})

ans = 

  struct with fields:

    foobarbaz: [1 2]

>> cell2struct({[1,2]}, {['foo';'bar';'baz']})
Error using cell2struct
Field name must be a character vector or string scalar.


I agree to Matlab's behavior in this case, because my valuable key is
truncated, without a warning.





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