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Created on 2014-10-10 19:15 by jwilk, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Files | ||||
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| File name | Uploaded | Description | Edit | |
| 229023.patch | jwilk, 2014-10-10 19:19 | review | ||
| Messages (3) | |||
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| msg229023 - (view) | Author: Jakub Wilk (jwilk) | Date: 2014-10-10 19:18 | |
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 when length is 0.
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| msg229024 - (view) | Author: Jakub Wilk (jwilk) | Date: 2014-10-10 19:19 | |
The attached patch should fix the bug. |
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| msg229054 - (view) | Author: Roundup Robot (python-dev)  |
Date: 2014-10-11 00:58 | |
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) https://hg.python.org/cpython/rev/8165e44594c2 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:08 | admin | set | github: 66795 |
| 2014-10-11 00:58:50 | python-dev | set | status: open -> closed nosy: + python-dev messages: + msg229054 resolution: fixed stage: resolved |
| 2014-10-10 19:19:48 | jwilk | set | files:
+ 229023.patch keywords: + patch messages: + msg229024 |
| 2014-10-10 19:18:23 | jwilk | set | messages:
+ msg229023 title: memcpy(NULL, NULL, 0) in -> memcpy(NULL, NULL, 0) in array_new() |
| 2014-10-10 19:15:10 | jwilk | create | |