[issue17852] Built-in module _io can loose data from buffered files at exit

[Armin Rigo]

Armin Rigo added the comment:

Here is a proof-of-concept.  It changes both _pyio.py and bufferedio.c and was tested with the examples here.  (See what I meant with "linked lists".)  The change in textio.c is still missing, but should be very similar to bufferedio.c.  This is similar to the implementation in PyPy.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17852>
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