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

[Rik]

Update of bug #51784 (project octave):

                  Status:                    None => Need Info              

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Follow-up Comment #2:

This works for me already without the patch.  Could you verify that this is
really necessary?  There is a quirk in that run-octave doesn't work for
testing.  You need to install a version to some location like ~/local and
execute that copy of Octave.

I've attached a file mygetv.c.  Try


clear all
mex mygetv.c
mygetv ("global", "a")
x = mygetv ("global", "a")


In neither case is the empty matrix [] returned even though the variable "a"
does not exist.


(file #41633)
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Additional Item Attachment:

File name: mygetv.c                       Size:0 KB


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