[issue38265] Update os.pread to accept the length type as size_t

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Python 3.7 and 3.8 also have os.pread(). Why not also fixing these branches?

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os.pwrite() uses Py_buffer for its argument and supports size_t size.

os.preadv() and os.pwritev() use internally the C structure "struct iovec" which uses size_t for its iov_len field.

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resolution: fixed -> 
status: closed -> open

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38265>
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