[Octave-bug-tracker] [bug #59126] max_recursion_depth exceeded when calling builtin 'end' from redefined 'end'

[Fernando]

URL:
  <https://savannah.gnu.org/bugs/?59126>

                 Summary: max_recursion_depth exceeded when calling builtin
'end' from redefined 'end'
                 Project: GNU Octave
            Submitted by: tutissanalio
            Submitted on: vie 18 sep 2020 00:08:13 UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 6.0.90
         Discussion Lock: Any
        Operating System: Any

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Details:

I defined the following class, which redefines the END method to print a
message:


classdef classend < handle
  properties
    data
  end
  methods
    function obj = classend(data)
      obj.data = data;
    end
    function r = end(obj,k,n)
      fprintf('''end'' called with index=%d of %d\n',k,n);
      r = builtin('end',obj,k,n);
    end
  end
end


then I get the following error when using END:


octave:1> obj=classend(1:5)
obj =
  classend object with properties:
      data: [1x5 double]
octave:2> obj(end)
'end' called with index=1 of 1
'end' called with index=1 of 1
'end' called with index=1 of 1
... (deleted lines) ...
'end' called with index=1 of 1
'end' called with index=1 of 1
error: max_recursion_depth exceeded
error: called from
    end
    end at line 11 column 9


Instead of that, the result should have been (like in Matlab):


octave:2> obj(end)
'end' called with index=1 of 1
ans =
  classend object with properties:
      data: [1x5 double]





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