Hi. I created PR which fixes potential crash. Serhiy Storchaka approved it already, but he wants one other review from core dev. And I updated document after his review too. So I want more one reviewer for the PR. Someone help me? https://github.com/python/cpython/pull/2974 https://bugs.python.org/issue31095 ## Background For GC types, tp_dealloc should call PyObject_GC_UnTrack() before calling any APIs which can run arbitrary code, including Py_DECREF. Without calling it, GC may happen during tp_dealloc and GC will find object which refcnt == 0. I checked all GC types and find some unsafe tp_dealloc. Even "extending and embedding" document missed untracking. Regards, INADA Naoki <songofacandy@gmail.com>