[issue9448] test_io leaks memory

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

Minimal example to reproduce:  the script below exhausts my system memory in a minute or two.

import io
rawio = io.BytesIO(b"abc")
bufio = io.BufferedReader(rawio)
while True:
    bufio.__init__(rawio)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9448>
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