[issue25709] Problem with string concatenation and utf-8 cache.

[STINNER Victor]

STINNER Victor added the comment:

I reviewed issue25709_2.patch.

> It would be good to get this in 3.4.4.

Since it's a major bug in the Unicode implementation, it may be worth to fix it in Python 3.3. The bug was introduced in Python 3.3 by the PEP 393.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25709>
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