[bug #68254] Error computing the 2-norm of a zero sparse matrix.

Rik <[email protected]> Mon, 20 Apr 2026 12:13:52 -0400 (EDT)

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

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Update of bug #68254 (group octave):

                  Status:                    None => Fixed
             Open/Closed:                    Open => Closed
           Fixed Release:                    None => 11.2.0 (current stable)

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Follow-up Comment #3:

Good catch, and thank you Dmitri for the very quick patch.

The only thing I changed was to tag the BIST tests with this bug number.

diff --git a/libinterp/corefcn/data.cc b/libinterp/corefcn/data.cc
--- a/libinterp/corefcn/data.cc
+++ b/libinterp/corefcn/data.cc
@@ -8390,8 +8390,8 @@ compute the norms of each column and ret
 %! result = norm (x, -Inf);
 %! assert (result, single (0.5));
 
-%!assert (norm (sparse (100, 100), 2), 0)
-%!assert (norm (complex(sparse (100, 100), sparse(0,0)), 2), 0)
+%!assert <68254> (norm (sparse (100, 100), 2), 0)
+%!assert <68254> (norm (complex(sparse (100, 100), sparse(0,0)), 2), 0)
 */

I checked it in at https://hg.savannah.gnu.org/hgweb/octave/rev/09be10c13f55.


This fix will be part of the 11.2 release.  Closing report.




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