STINNER Victor <victor.stin...@haypocalc.com> added the comment: Le dimanche 01 mai 2011 à 03:19 +0000, STINNER Victor a écrit : > The test suite crashs randomly with issue9756.patch on my Ubuntu 11.04 > (AMD64 with 4 cores, 4 GB of memory, Linux 2.6.38). I use "./python > -bb Lib/test/regrtest.py -r" to reproduce the crash. > > ... I tried without the patch, and test_descr does crash quickly in > test_wrapper_segfault(). It crashs in _PyObject_GC_New(), in a > callback used to release the memory. Sometimes it fails on > update_refs(), sometimes in _PyObject_DebugFree(), sometimes in > wrapper_dealloc()->_Py_ForgetReference, etc. I use "./python > Lib/test/regrtest.py -F -v test_descr" to reproduce the crash > (sometimes it takes more than one run to crash). > > It's strange because I'm unable to reproduce the bug on a very similar > setup (Debian Sid, AMD64 with 2 cores, 2 GB of memory, Linux 2.6.38). > > Should I run a memcheck on the Ubuntu host? Or is anyone able to > reproduce the bug?
Ok, I'm sure that I have hardware issues, but I am also sure that the patch introduces random crashes, especially in test_descr.test_wrapper_segfault(). I tried to only patch methoddescr_call(): replace PyObject_IsInstance() by _PyObject_RealIsSubclass() introduces the crash. Call PyObject_IsInstance() after _PyObject_RealIsSubclass() doesn't help. But... call PyObject_IsInstance() before _PyObject_RealIsSubclass() avoids the crash !? ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue9756> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com