[3.13] gh-135335: flush stdout/stderr in forkserver after preloading modules (GH-135338) #135671
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…odules (pythonGH-135338) If a preloaded module writes to stdout or stderr, and the stream is buffered, child processes will inherit the buffered data after forking. Attempt to prevent this by flushing the streams after preload. (cherry picked from commit 9877d19) Co-authored-by: Duane Griffin <duaneg@dghda.com> Co-authored-by: Mikhail Efimov <efimov.mikhail@gmail.com> Co-authored-by: Victor Stinner <vstinner@python.org>
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If a preloaded module writes to stdout or stderr, and the stream is buffered,
child processes will inherit the buffered data after forking. Attempt to
prevent this by flushing the streams after preload.
(cherry picked from commit 9877d19)
Co-authored-by: Duane Griffin duaneg@dghda.com
Co-authored-by: Mikhail Efimov efimov.mikhail@gmail.com
Co-authored-by: Victor Stinner vstinner@python.org