Thanks all. Documentation has been updated in https://bugs.python.org/issue30470
On May 23, 2017 9:13 PM, "Victor Stinner" <victor.stin...@gmail.com> wrote: Sure, make your change and then update libffi! Victor Le 23 mai 2017 18:19, "Steve Dower" <steve.do...@python.org> a écrit : > On 23May2017 1212, Victor Stinner wrote: > >> 2017-05-22 13:17 GMT-05:00 Steve Dower <steve.do...@python.org>: >> >>> Once the special protection is removed, most of these cases will become >>> OSError due to the general protection against segmentation faults. >>> >> >> It didn't know that ctypes on Windows had a special protection against >> programming errors. I'm not aware of such protection Linux. If you >> call a function with the wrong number of arguments, it's likely to >> crash or return random data. >> >> I guess that the point is to help debugging. But since Python 3.6, >> faulthandler now registers a Windows exception handler and so it able >> to dump the Python traceback on any Windows exception: >> https://docs.python.org/dev/library/faulthandler.html#faulthandler.enable >> >> So I think that it's now fine to remove the ctypes protection. Just >> advice (remind? ;-)) users to enable faulthandler: python3 -X >> faulthandler, or call faulthandler.enable(). (You might want to use a >> log file for that on Windows, depends on the use case.) >> > > faulthandler is already recommended in the docs, and the existing SEH > protection for access violations will remain (since that is independent of > libffi). > > I'll be honest, I have appreciated the functionality in the past, but it > really isn't good practice and getting rid of it will be an overall > benefit. Technically even the segfault protection isn't a great idea, since > you really do end up in an unknown state with regards to memory page > allocations, but it's better than crashing all the way out. > > Cheers, > Steve > _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/ mariatta.wijaya%40gmail.com
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