[bug #68434] Function gsvd crashes when matrices have 10 or more columns

"Dmitri A. Sergatskov" <[email protected]> Mon, 15 Jun 2026 05:21:53 -0400 (EDT)

Newsgroups	gmane.comp.gnu.octave.bugs
Message-ID	<[email protected]>

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Follow-up Comment #13, bug #68434 (group octave):

The fault appears is in how gsvd constructs the singular value matrices when
the inputs lack full column rank.
(If [A; B] has full column rank k + l == n)

Since you compile Octave yourself, could you try this change:

--- a/liboctave/numeric/gsvd.cc Wed Jun 10 20:03:57 2026 +0200
+++ b/liboctave/numeric/gsvd.cc Mon Jun 15 05:14:39 2026 -0400
@@ -682,7 +682,7 @@
 
       if (! fill_ptn)
         {
-          for (i = m; i < n; i++)
+          for (i = m; i < k + l; i++)
             m_sigmaB.xelem (i-k, i) = 1.0;
         }


and see if that solves the problem for you?


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