[bug #68095] [octave forge] (nan) Failing unit tests for histo2 and histo3 with Octave 11

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URL:
  <https://savannah.gnu.org/bugs/?68095>

                 Summary: [octave forge] (nan) Failing unit tests for histo2
and histo3 with Octave 11
                   Group: GNU Octave
               Submitter: rlaboiss
               Submitted: Thu 26 Feb 2026 07:20:50 PM UTC
                Category: Octave Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name:
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Unlocked
                 Release: other
        Operating System: Any
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Thu 26 Feb 2026 07:20:50 PM UTC By: Rafael Laboissière <rlaboiss>
With Octave 11, two unit tests of the nan package (version 3.7.0)  fail:


octave:2> test histo2
***** assert(getfield(histo2([]),'N'), 0)
!!!!! test failed
ASSERT errors for:  assert (getfield (histo2 ({}), 'N'),0)

  Location  |  Observed  |  Expected  |  Reason
     .          O(1x0)       E(1x1)      Dimensions don't match
octave:2> test histo3
***** assert(getfield(histo3([]),'N'), 0)
!!!!! test failed
ASSERT errors for:  assert (getfield (histo3 ({}), 'N'),0)

  Location  |  Observed  |  Expected  |  Reason
     .          O(1x0)       E(1x1)      Dimensions don't match


This is a regression compared to Octave 10. I think the reason is a change in
the sum function's behavior between versions 10 and 11.

With Octave 10:


octave:1> sum([])
ans = 0
octave:2> sum([], 1)
ans = 0


With Octave 11:


octave:1> sum([])
ans = 0
octave:2> sum([], 1)
ans = [](1x0)


The regression may be in Octave. If so, please retitle and reassign this bug
report.








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