[issue23247] Crash in the reset() method of StreamWriter of CJK codecs

[STINNER Victor]

STINNER Victor added the comment:

> Happens for all the multibyte codecs: (...)

All these codecs share the same C implementation: the "CJK" codecs.

The bug was introduced in Python 3.4 by my huge changeset d621bdaed7c3: Issue "#17693: CJK encoders now use the new Unicode API (PEP 393)".

It looks like there was no test for this specific bug :-/ Calling reset() just after creating a StreamReader object.

Attached patch should fix the crash.

@Aaron1011: Can you please try to write a patch adding a unit test to test_codecs reproducing the crash?

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keywords: +patch
title: Multibyte codec StreamWriter.reset() crashes -> Crash in the reset() method of StreamWriter of CJK codecs
versions: +Python 3.5
Added file: http://bugs.python.org/file39932/cjk_codecs_reset.patch

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