[issue31530] [2.7] Python 2.7 readahead feature of file objects is not thread safe

[STINNER Victor]

STINNER Victor added the comment:

Benjamin Peterson proposed attached patch.

@Benjamin: Would you mind to convert this patch to a PR to ease review?

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keywords: +patch
nosy: +benjamin.peterson, serhiy.storchaka
Added file: https://bugs.python.org/file47157/0001-stop-crashes-when-iterating-over-a-file-on-multiple-.patch

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31530>
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