[issue10451] memoryview can be used to write into readonly buffer

[Evgeny Kapun]

New submission from Evgeny Kapun <abacabadabacaba at gmail.com>:

This code crashes Python:

import io, mmap
io.BytesIO(b' ').readinto(memoryview(mmap.mmap(-1, 1, prot=mmap.PROT_READ)))

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components: Interpreter Core
messages: 121446
nosy: abacabadabacaba
priority: normal
severity: normal
status: open
title: memoryview can be used to write into readonly buffer
type: crash
versions: Python 3.1, Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue10451>
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