Changes by Jakub Wilk jw...@jwilk.net:
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components: Library (Lib)
nosy: jwilk
priority: normal
severity: normal
status: open
title: memcpy(NULL, NULL, 0) in
versions: Python 3.5
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Python tracker rep...@bugs.python.org
Jakub Wilk added the comment:
The attached patch should fix the bug.
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keywords: +patch
Added file: http://bugs.python.org/file36871/229023.patch
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue22605
New submission from Jakub Wilk:
If you initialize array with another empty array, then this code runs:
memcpy(self-ob_item, other-ob_item, len * other-ob_descr-itemsize);
But self-ob_item and other-ob_item are NULL in such case.
Passing null pointer to memcpy() is undefined behavior even
Roundup Robot added the comment:
New changeset 4563fff4e099 by Benjamin Peterson in branch '3.4':
prevent passing NULL to memcpy (closes #22605)
https://hg.python.org/cpython/rev/4563fff4e099
New changeset 8165e44594c2 by Benjamin Peterson in branch 'default':
merge 3.4 (closes #22605)
