[Octave-bug-tracker] [bug #30639] mxCreateString(NULL) causes segmentation fault

[Rik]

Follow-up Comment #3, bug #30639 (project octave):

Your solution works just fine.  However, I think the overall implementation
of passed pointers for mex arguments needs to be  reworked.  For example, I
can produce a segmentation fault with 

mxCreateCellArray (1, NULL)

where, again, a pointer is expected.  Either all of the mex routines that
accept pointers need better input validation.  Or the issue needs to be
reviewed deeper in the code.  For example, wherever there is a free or delete
(there aren't many) it might be worth checking that the ptr is not NULL.

I'm attaching another file, test_mex2.cpp, which illustrates that any NULL
pointer passed in will produce a segfault.

(file #21143)
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Additional Item Attachment:

File name: test_mex2.cpp                  Size:0 KB


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