[3.6] bpo-24658: os.read() reuses _PY_READ_MAX (GH-10657) #10659
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os_read_impl() now also truncates the size to _PY_READ_MAX
on macOS, to avoid to allocate a larger buffer even if _Py_read() is
limited to _PY_READ_MAX bytes (ex: INT_MAX on macOS).
(cherry picked from commit 9a0d7a7)
Co-authored-by: Victor Stinner vstinner@redhat.com
https://bugs.python.org/issue24658