Created on 2010-11-20 11:53 by sh, last changed 2010-11-20 17:24 by benjamin.peterson. This issue is now closed.
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| File name | Uploaded | Description | Edit | |
| bio_readinto_1.patch | sh, 2010-11-20 11:53 | Bugfix attempt 0 | ||
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| msg121618 - (view) | Author: Sebastian Hagen (sh) | Date: 2010-11-20 11:53 | |
io.BytesIO().readinto() does not correctly handle the case of being called on a BytesIO object that has been seeked past the end of its data. It consequently ends up reading into unallocated memory, and (typically?) segfaulting if used in this manner. I've confirmed that this bug exists in the same fashion in 2.6, 2.7, 3.0, 3.1 and 3.2; the following demonstration code works on all of these. Demonstration: >>> import io; b = io.BytesIO(b'bytes'); b.seek(42); b.readinto(bytearray(1)) 42 Segmentation fault I'm attaching a simple patch against r32a3:85355 that fixes this problem. |
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| msg121687 - (view) | Author: Benjamin Peterson (benjamin.peterson) *  |
Date: 2010-11-20 17:24 | |
r86587 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2010-11-20 17:24:27 | benjamin.peterson | set | status: open -> closed nosy: + benjamin.peterson messages: + msg121687 resolution: fixed |
| 2010-11-20 14:42:25 | r.david.murray | set | nosy:
+ pitrou |
| 2010-11-20 11:53:24 | sh | create | |