[Octave-bug-tracker] [bug #63545] Errors shown repeatedly when there is an error in method size()

[Martynas]

URL:
  <https://savannah.gnu.org/bugs/?63545>

                 Summary: Errors shown repeatedly when there is an error in
method size()
                 Project: GNU Octave
               Submitter: mpata
               Submitted: Sun 18 Dec 2022 05:32:10 AM EET
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 7.3.0
         Discussion Lock: Any
        Operating System: Any
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Sun 18 Dec 2022 05:32:10 AM EET By: Martynas <mpata>
Errors are shown repeatedly when there is an error in method size(). For
example, let's have a class, where method size() runs into an error (referring
to undefined variable A instead of property A; a relatively natural mistake if
one wants to have the size of an object to be reported equal to the size of
something else):


classdef TestObj
  properties
    A;
  endproperties
  methods
    function [obj] = TestObj()
      obj.A = 5;
    endfunction

    function [varargout] = size (obj, dimnr)
      [numofrows, numofvars] = size (A);
    endfunction
  endmethods
end


Let's run a script that creates such an object and displays it (not even
calling size() explicitly):


[obj] = TestObj();

obj


The result (after actually showing an object) is an unending series of
errors:


>> error: 'A' undefined near line 11, column 38
error: called from
    size at line 11 column 30
>> error: 'A' undefined near line 11, column 38
error: called from
    size at line 11 column 30


This series is not even stopped by Ctrl+C.

Now, reporting one error would have been fine (while it might not be obvious
that method size() is going to be run when an object is merely being
displayed, at least that becomes somewhat clearer after seeing an error
message), but that should not result in such an infinite loop.







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