[Octave-bug-tracker] [bug #56232] Octave crash when inverting an empty sparse matrix.

[Marco Caliari]

Follow-up Comment #55, bug #56232 (project octave):

I started the implementation (attached). It seems to work, but I cannot
trigger the case mattype.ishermitian() in SparseMatrix::inverse. For instance,
the following


> A = sparse ([1, 0, 0;0 ,0, 0; 0, 0, 1];
> ishermitian (A)
ans = 1


falls in ! mattype.ishermitian ().

I copied the result for the diag case and fixed a misalignment between the
double and the complex version. Should I continue with inv (zeros (2))
returning an error? In Matlab and in Octave now the result is Inf (2).

(file #46906)
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Additional Item Attachment:

File name: sparse-singular.cset           Size:7 KB
    <https://savannah.gnu.org/file/sparse-singular.cset?file_id=46906>



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