[Octave-bug-tracker] [bug #51784] mexGetVariable does returns empty matrix instead of nullptr for non-existant global variables

[Piotr Held]

URL:
  <http://savannah.gnu.org/bugs/?51784>

                 Summary: mexGetVariable does returns empty matrix instead of
nullptr for non-existant global variables
                 Project: GNU Octave
            Submitted by: jsoh425
            Submitted on: Fri 18 Aug 2017 05:30:39 PM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Piotr Held
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

I double checked this with Matlab (and their documentation) and the way it's
suppose to work is that if the global variable doesn't exist mexGetVariable
should return nullptr. Currently it returns an empty matrix.

I am attaching patch to fix this problem.



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File Attachments:


-------------------------------------------------------
Date: Fri 18 Aug 2017 05:30:39 PM UTC  Name: patch_mexGetVariable.diff  Size:
909B   By: jsoh425

<http://savannah.gnu.org/bugs/download.php?file_id=41571>

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