[bug #68172] any() and all() should work only on numeric or logical args

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URL:
  <https://savannah.gnu.org/bugs/?68172>

                 Summary: any() and all() should work only on numeric or
logical args
                   Group: GNU Octave
               Submitter: kolmanthomas
               Submitted: Tue 24 Mar 2026 05:35:44 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Thomas Kolman
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Unlocked
                 Release: dev
        Operating System: Any
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Tue 24 Mar 2026 05:35:44 PM UTC By: Thomas <kolmanthomas>
Current behaviour of `any` and `all` is to return 0 when used on a classdef
object.

For example: a classdef `foo` with no overloaded `any` or `all` methods that
is otherwise arbitrary, then


>> obj = foo();
>> all(obj)
ans = 0
>> any(obj)
ans = 0


Same with a struct.

There should be an error when `any` or `all` is used on a classdef object
which does not explicitly overload either one of these methods.









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