New submission from Gregory P. Smith <g...@krypto.org>:
The behavior is odd, I don't really know how to characterize it other than something serious has gone wrong. Memory corruption thus differing failures perhaps? it seems like maybe a race condition? on the main branch (i cannot reproduce this on 3.10 thankfully): 1) git checkout https://github.com/python/cpython.git upstream 2) mkdir b-u && cd b-u 3) ../upstream/configure --with-pydebug && make -j3 && ./python -m test.regrtest test_importlib - sometimes it hangs forever. - sometimes it crashes with a long list of error messages coming out of regrtest itself. The crashes appear to happen in a child process so regrtest can continue and run other tests if you tell it to run more. Sometimes it'll be an error about "import _frozenimport_lib as bootstrap" failing with sys.modules containing None. (Linux does that for me) On macOS when it doesn't hang, I get a blowup from test_importlib/test_threaded_import.py. I've reproduced this on Linux and macOS. macOS alternates between a traceback blowup and hang with an occasional pass. On Linux it is quite consistently a huge chain of stacktraces. Linux: ``` 0:00:00 load avg: 2.48 Run tests sequentially 0:00:00 load avg: 2.48 [1/1] test_importlib Failed to import test module: test.test_importlib.builtin.test_finder Traceback (most recent call last): File "/home/greg/oss/python/cpython/gpshead/Lib/importlib/__init__.py", line 16, in <module> import _frozen_importlib as _bootstrap ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ModuleNotFoundError: import of _frozen_importlib halted; None in sys.modules During handling of the above exception, another exception occurred: ... tons more ... ``` Our buildbot fleet is not bloody looking. Which is why I tried it on two different systems and OSes before reporting. When I do a ./configure and run everything within the source tree it does not fail. This is only for proper out-of-tree builds (which are what I always use - as should everybody). Do our buildbots only do in-tree builds? ---------- components: Build messages: 404159 nosy: gregory.p.smith priority: high severity: normal stage: needs patch status: open title: Out of source tree builds failing on main - test_importlib others unreliable type: behavior versions: Python 3.11 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45506> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
