➜
This issue tracker has been migrated to GitHub,
and is currently read-only.
For more information,
see the GitHub FAQs in the Python's Developer Guide.
Created on 2018-09-15 17:13 by izbyshev, last changed 2022-04-11 14:59 by admin.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 14837 | open | shihai1991, 2019-07-18 12:22 | |
| Messages (4) | |||
|---|---|---|---|
| msg325448 - (view) | Author: Alexey Izbyshev (izbyshev) *  |
Date: 2018-09-15 17:13 | |
It is possible to manually create an instance of private CField type which is used by ctypes to represent fields of Structure and Union types. This instance will be uninitialized because it's normally initialized when instances of Structure/Union are created, so calling its methods may crash the interpreter:
from ctypes import *
class S(Structure):
_fields_ = [('x', c_int)]
CField = type(S.x)
f = CField()
repr(f) # Crash here
Is this issue worth fixing?
If so, is the correct way to set tp_new slot to NULL and fix the internal callers so that users wouldn't be able to create CField instances?
|
|||
| msg347814 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2019-07-13 13:18 | |
> Is this issue worth fixing? Definitely yes. > If so, is the correct way to set tp_new slot to NULL and fix the internal callers so that users wouldn't be able to create CField instances? I think yes. Do you mind to create a PR? |
|||
| msg348113 - (view) | Author: Hai Shi (shihai1991) * |
Date: 2019-07-18 12:33 | |
I have try to cancel this PyCField_new function, but i am not sure I haven't break the code structure. |
|||
| msg348944 - (view) | Author: Hai Shi (shihai1991) * |
Date: 2019-08-03 06:03 | |
ping |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:06 | admin | set | github: 78878 |
| 2022-01-23 19:52:13 | iritkatriel | set | versions: + Python 3.9, Python 3.10, Python 3.11, - Python 2.7, Python 3.6, Python 3.7, Python 3.8 |
| 2019-08-03 06:03:24 | shihai1991 | set | messages: + msg348944 |
| 2019-07-18 12:33:55 | shihai1991 | set | nosy:
+ shihai1991 messages: + msg348113 |
| 2019-07-18 12:22:04 | shihai1991 | set | keywords:
+ patch stage: patch review pull_requests: + pull_request14628 |
| 2019-07-13 13:18:37 | serhiy.storchaka | set | messages: + msg347814 |
| 2019-07-10 12:06:57 | shihai1991 | set | nosy:
- shihai1991 |
| 2019-07-10 04:42:52 | shihai1991 | set | nosy:
+ shihai1991 |
| 2018-09-16 07:45:55 | xtreak | set | nosy:
+ xtreak |
| 2018-09-15 17:13:13 | izbyshev | create | |