[Octave-bug-tracker] [bug #54096] mxCreateStructMatrix with a NULL argument creates a "corrupt" structure

[Julien Bect]

Follow-up Comment #12, bug #54096 (project octave):

Note that, in Matlab, structures containing NULL pointers can be produced
directly, without a MEX-file.

Indeed, consider the struct x obtained as follows:

x = struct ();
x(2).a = 'yeah';


and assume that px is an mxArray* to x.  Then, mxGetField (px, 0, "a") returns
NULL, while mxGetField (px, 1, "a") returns a non-NULL pointer.

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