[issue23985] Crash when deleting slices from duplicated bytearray

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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nosy: +pitrou, serhiy.storchaka
priority: normal -> high

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23985>
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