Message351098
| Author | vstinner |
|---|---|
| Recipients | Mark.Shannon, christian.heimes, jdemeyer, lukasz.langa, pablogsal, petr.viktorin, pitrou, vstinner |
| Date | 2019-09-03.19:22:20 |
| SpamBayes Score | -1.0 |
| Marked as misclassified | Yes |
| Message-id | <1567538540.65.0.539449668045.issue38006@roundup.psfhosted.org> |
| In-reply-to |
| Content | |
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gc_crash.py: * PyObject_GC_UnTrack() + PyObject_GC_Track() is used to order objects in the GC collection 0, the objects which are involved in the reference cycle. * BadGC2Type type is implemented in C, uses Py_TPFLAGS_HAVE_GC, implements tp_traverse, but it doesn't implement tp_clear. * IHMO gc_crash.py is only legit code. BadGC2Type implements the GC protocol (except to tp_clear). I'm not sure that it's the same bug than reproducer.tar.gz which uses a weak reference. BadGC2Type is used to call a function in tp_dealloc. It should be possible to use a weak reference for that: the weak reference can use a callback. But I failed write a reproducer script using a weak reference. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2019-09-03 19:22:20 | vstinner | set | recipients: + vstinner, pitrou, christian.heimes, petr.viktorin, lukasz.langa, Mark.Shannon, jdemeyer, pablogsal |
| 2019-09-03 19:22:20 | vstinner | set | messageid: <1567538540.65.0.539449668045.issue38006@roundup.psfhosted.org> |
| 2019-09-03 19:22:20 | vstinner | link | issue38006 messages |
| 2019-09-03 19:22:20 | vstinner | create | |