[Octave-bug-tracker] [bug #50893] for loop index variable not initialized unless loop is entered

[Rik]

Update of bug #50893 (project octave):

                Category:                    None => Interpreter            
                Severity:              3 - Normal => 2 - Minor              
                Priority:              5 - Normal => 3 - Low                
              Item Group:                    None => Matlab Compatibility   
                  Status:                    None => Confirmed              

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Follow-up Comment #2:

Confirmed.  And as a clue to tracking this down, it appears to happen only
with ranges.  For example, this works despite the 


for k = zeros (0,3)
  disp (k);
end
[](0x1)
[](0x1)
[](0x1)

whos k

Variables in the current scope:

   Attr Name        Size                     Bytes  Class
   ==== ====        ====                     =====  ===== 
        k           0x1                          0  double

Total is 0 elements using 0 bytes


Could you run the sample code above in Matlab to see what it does?  They may
check whether the loop body is empty before executing anything.  In that case,
I would expect that k would be of size 0x3 and no loop body would be
executed.



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