STINNER Victor <vstin...@python.org> added the comment:
This bug is really hard to reproduce on Windows. It depends on flake8 is run. It's a random crash in the last GC collection at Python exit. Crash related to AST in interpreter_clear() remains me bpo-41796. Extract of the code: static void interpreter_clear(PyInterpreterState *interp, PyThreadState *tstate) { ... _PyAST_Fini(interp); ... /* Last garbage collection on this interpreter */ _PyGC_CollectNoFail(tstate); _PyGC_Fini(interp); ... } The crash occurs in _PyGC_CollectNoFail(). _PyAST_Fini() clears references to AST types in the interpreter AST state. AST type instances hold a reference to the their heap type: static int ast_traverse(AST_object *self, visitproc visit, void *arg) { Py_VISIT(Py_TYPE(self)); Py_VISIT(self->dict); return 0; } But the crash happens when self->dict is deallocated. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue44184> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com