Alexey Izbyshev

Svace static analyzer reported that the result of shift at https://github.com/khaledhosny/ots/blob/5cbcf1bdfac88025f09c40b25b3b5603c907a4ff/src/cff.cc#L219 is always zero. Looks like `8` should be changed to `4`.

bpo-32904: Fix a potential crash in os.chdir() and os.getcwd() on Windows

1

win32_wchdir() retries GetCurrentDirectory() with a larger buffer if necessary, but doesn't check whether the new buffer is large enough. Another thread could change the current directory in meanwhile, so the...

bpo-32862: Make os.dup2(fd, fd) a no-op for valid fd

2

os.dup2(fd, fd, inheritable=True) never changed fd inheritability, but with inheritable=False the function might fail or change it in an inconsistent manner depending on the platform. https://bugs.python.org/issue32862