[Python-3000] Potential overflows due to incorrect usage of PyUnicode_AsString.

[Alexandre Vassalotti]

Hi,

A while ago, I found some pieces of code which were susceptible to
overflow. I posted a patch, however I haven't heard any comment about
it. Could someone, who has the time, take a look and review the patch
before I commit it?

http://bugs.python.org/issue1950

Thanks,
-- Alexandre