[New-bugs-announce] [issue5387] mmap.move crashes by integer overflow

[Hirokazu Yamamoto]

New submission from Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp>:

mmap.move crashes by integer overflow. See
http://www.nabble.com/Segv-in-mmap.move()-td18617044.html

import mmap
data = mmap.mmap(-1, 1)
data.move(1,1,-1) # crash

Maybe mmap.move should use Py_ssize_t and raise
IndexError(OverflowError?) for negative value.

The patch is in r69943.

----------
components: Extension Modules
messages: 82854
nosy: ocean-city
severity: normal
status: open
title: mmap.move crashes by integer overflow
type: crash
versions: Python 2.6, Python 2.7, Python 3.0, Python 3.1

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5387>
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