[Octave-bug-tracker] [bug #54373] strncmp does not compute result accurately when N exceeds string length

[Rik]

Update of bug #54373 (project octave):

              Item Group:    Matlab Compatibility => Incorrect Result       
                  Status:                    None => Confirmed              
        Operating System:                  Mac OS => Any                    
                 Summary: Different behavior of strncmp compared to Matlab =>
strncmp does not compute result accurately when N exceeds string length

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Follow-up Comment #1:

Confirmed.

Very simple test is


octave:2> strncmp ('abc', 'abc', 3)
ans = 1
octave:3> strncmp ('abc', 'abc', 4)
ans = 0


This shouldn't be hard to fix.  I seem to remember that Octave tries to avoid
calling the C library function strncmp by checking obvious things, like
whether the length of the strings are equal.  In this case, it must be
comparing the string length to the number of characters, N, which is
incorrect.


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