[issue31966] print('hello\n', end='', flush=True) raises OSError when ran with py -u

[Eryk Sun]

Eryk Sun <eryksun at gmail.com> added the comment:

The error is in _io__WindowsConsoleIO_write_impl. If it's passed a length 0 buffer, it still tries to decode it via MultiByteToWideChar, which fails as documented. As Serhiy says, it can simply return Python int(0) in the zero-length case.

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nosy: +eryksun

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<https://bugs.python.org/issue31966>
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