New submission from Ned Batchelder <n...@nedbatchelder.com>:
Coverage.py bug reports https://github.com/nedbat/coveragepy/issues/1022 and https://github.com/nedbat/coveragepy/issues/959 demonstrate the same Python code, with the same disassembly, executing differently. In https://discuss.python.org/t/same-python-version-different-optimizations-on-different-os/5098, Ammar Askar said: > For any core developer who wants to look into this, based on my preliminary > research this seems to be related to opcode prediction and computed GOTOS. > > If you put #define USE_COMPUTED_GOTOS 0 above > https://github.com/python/cpython/blob/master/Python/ceval.c#L1033 then this > issue is re-creatable on Linux/Mac. > > It seems to be an issue relating to how f_lasti is updated. ---------- components: Interpreter Core keywords: 3.8regression messages: 376135 nosy: nedbat priority: normal severity: normal status: open title: Windows and Linux execute the same code differently type: behavior versions: Python 3.8, Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue41670> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
