STINNER Victor added the comment: > To debug, since I guess it's due to a memory corruption because > objects are deallocated while they're still in use, you could try > to use valgrind. > Unfortunately, since it's due to a race condition, the overhead > will probably make it really hard to reproduce :-(
I added assert(_Py_Finalizing == NULL || _Py_Finalizing == PyThreadState_GET()) almost everywhere, but the assertion didn't fail. It looks like only the main thread is running between the interrupted wait_for_thread_shutdown() and the final "python: Modules/gcmodule.c:379: visit_decref: ... failed" assertion in PyGC_Collect(). I tried to add directly assert(_PyGCHead_REFS(gc) != 0) in _PyGCHead_SET_REFS(), but the assertion didn't fail. I also ran Python in Valgrind: no error neither. Ok... I close this issue as won't fix because it was occur with #19466 applied, but I just reverted this patch. ---------- resolution: -> wont fix status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20526> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
