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Created on 2011-10-23 18:45 by meador.inge, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Files | ||||
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| File name | Uploaded | Description | Edit | |
| ctypes-refleak-repro.patch | meador.inge, 2011-10-23 18:45 | Reproduction case patch. | review | |
| Messages (5) | |||
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| msg146242 - (view) | Author: Meador Inge (meador.inge) *  |
Date: 2011-10-23 18:45 | |
While implementing a patch for issue13096 I found a reference leak in 'ctypes'. I couldn't find the cause immediately, but it can be reproduced by applying the attached patch and running: [meadori@motherbrain cpython]$ ./python -m test -R : test_ctypes [1/1] test_ctypes beginning 9 repetitions 123456789 ......... test_ctypes leaked [51, 51, 51, 51] references, sum=204 1 test failed: test_ctypes [174347 refs] |
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| msg146243 - (view) | Author: Benjamin Peterson (benjamin.peterson) * |
Date: 2011-10-23 18:46 | |
The cause is ctypes caches POINTER types. You have to make sure to clear the cache. |
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| msg146261 - (view) | Author: Martin v. Löwis (loewis) * |
Date: 2011-10-23 21:58 | |
So it's not a bug at all, right? |
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| msg146266 - (view) | Author: Meador Inge (meador.inge) * |
Date: 2011-10-23 22:51 | |
Ah, I see now. Thanks Benjamin. > So it's not a bug at all, right? A bug in regrtest.py maybe. 'dash_R_cleanup' clears various other caches in between test runs to avoid false positives like this. Perhaps 'ctypes._pointer_type_cache' should be cleared there as well. |
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| msg147395 - (view) | Author: Meador Inge (meador.inge) * |
Date: 2011-11-10 05:23 | |
I opened issue13380 for fixing the ctypes regrtest caching problem. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:23 | admin | set | github: 57459 |
| 2011-11-10 05:23:46 | meador.inge | set | messages: + msg147395 |
| 2011-10-23 22:51:08 | meador.inge | set | messages: + msg146266 |
| 2011-10-23 21:58:49 | loewis | set | status: open -> closed nosy: + loewis messages: + msg146261 resolution: not a bug |
| 2011-10-23 18:46:53 | benjamin.peterson | set | nosy:
+ benjamin.peterson messages: + msg146243 |
| 2011-10-23 18:45:08 | meador.inge | create | |