On Tue, 2021-08-17 at 12:14 +0100, Irit Katriel wrote: > > On Tue, Aug 17, 2021 at 12:05 PM Duncan Grisby <dun...@grisby.org> > wrote: > > I don't know if it is pertinent to this at all, but I > > raised https://bugs.python.org/issue44449 in which the faulthandler > > module can lead to a segfault inside Py_TRASHCAN_SAFE_BEGIN. Would > > that be avoided if frameobject.c was changed to use > > Py_TRASHCAN_BEGIN / END? > > > > > We just changed frameobject.c to use the new macros. Can you check? > https://github.com/python/cpython/pull/27683
Thanks. Victor Stinner has now commented on the defect I raised to say that it is actually a bug in the traceback module, in that it should not be using Py_DECREF at all inside a signal handler. The fact that it leads to use of the old trashcan macros is not the cause of the crash that I saw. I therefore don't think it's necessary for me to check with the updated frameobject.c. Do you agree? I can try to reproduce the situation, but I can't just quickly test it because the infrastructure where the crash was seen is now being used for other things. Duncan. -- Duncan Grisby <dun...@grisby.org>
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