[Bug 2245] New: Netcat does not work due to incorrect assumptions about signed chars.

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=2245

           Summary: Netcat does not work due to incorrect assumptions
                    about signed chars.
           Product: Busybox
           Version: 1.16.x
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: minor
          Priority: P5
         Component: Other
        AssignedTo: unassigned at busybox.net
        ReportedBy: nick at leverton.org
                CC: busybox-cvs at busybox.net
   Estimated Hours: 0.0


Created attachment 2251
  --> https://bugs.busybox.net/attachment.cgi?id=2251
Patch from sourceforge to fix "Total ports=-1" error

GNU netcat doesn't work on avr32, ARM, Macs or other differently-endian
machines, but just silently exits without connecting.  The routine for checking
which ports are in use is buggy and has problems with unwanted sign-extension. 
If you enable debug messaging, the error given is

  (debug) Arguments parsing complete! Total ports=-1 

See
http://sourceforge.net/tracker/?func=detail&aid=1068324&group_id=52204&atid=466046
and
http://sourceforge.net/tracker/?func=detail&aid=1205729&group_id=52204&atid=466046

The attached patch is a reformatted version of the fix on Sourceforge.  I've
confirmed that it works on AVR32 at least.

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