[Octave-bug-tracker] [bug #31689] md5sum(s, 1) reports incorrectly if s ends in null character.

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?31689>

                 Summary: md5sum(s,1) reports incorrectly if s ends in null
character.
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Thu 18 Nov 2010 01:08:42 AM UTC
                Category: Libraries
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: David Smith
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.4
        Operating System: Microsoft Windows

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Details:

md5sum(s,1) doesn't return the correct value for 
any strings ending in a nul character.  However, I can
write the string to a file and md5sum(filename) returns
the correct value.


s = "abc\0";
fid = fopen ('tmp.dat', 'wb')
fwrite(fid, s)   
fclose(fid)      

% this returns 147a664a2ca9410911e61986d3f0d52a (correct!)
md5sum('tmp.dat')

% this returns 900150983cd24fb0d6963f7d28e17f72 (wrong!)
md5sum(s,1)


Further experiments indicate that md5sum(s,1) ignores 
strips multiple trailing nuls from strings but respects non-trailing nuls
when computing md5sum.




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