Eryk, could the tests in the path file that you posted regarding int() and float() be incorrect in the sense that buffer(...)[a:b] returns a str() and not another buffer() (and will thus always be NUL terminated and not exhibit the problem, whether or not the C source have been patch)? I think the tests should be using buffer(..., a, b) instead.

May I say that I am very, very impressed by the speed with which this has been picked up? Thank you all for your impressive work!