cygpath bug converting really long filenames

[Jesper Eskilson]

Hi!

The attached shell-script causes cygpath to malfunction by trying to
convert a long string of z:s using 'cygpath -w'. It begins by trying "z",
then "zz", and so on.

When trying more than 240 z:s, the result becomes garbled. For example:

246 zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzÿÿÿÿNTFS

and at 249 z:s cygpath fails and says "error converting ...".

Smells like a buffer overrun somewhere.

-- 
/Jesper
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