Hi,
2017-12-15 20:55 GMT+01:00 Barry Warsaw <ba...@python.org>:
> I haven’t bisected this yet, but with git head, built and tested on macOS
> 10.12.6 and Xcode 9.2, I’m seeing this crash in test_embed:
>
> ======================================================================
> FAIL: test_bpo20891 (test.test_embed.EmbeddingTests)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
> File "/Users/barry/projects/python/cpython/Lib/test/test_embed.py", line
> 207, in test_bpo20891
> out, err = self.run_embedded_interpreter("bpo20891")
> File "/Users/barry/projects/python/cpython/Lib/test/test_embed.py", line
> 59, in run_embedded_interpreter
> (p.returncode, err))
> AssertionError: -6 != 0 : bad returncode -6, stderr is 'Fatal Python error:
> PyEval_SaveThread: NULL tstate\n\nCurrent thread 0x00007fffcb58a3c0 (most
> recent call first):\n'
>
> Seems reproducible across different machines (all running 10.12.6 and Xcode
> 9.2), even after a make clean and configure. I don’t see the same failure on
> Debian, and I don’t see the crashes on the buildbots.
>
> Can anyone verify?
It's a known issue. The hint is in the method name: test_bpo20891 :-)
https://bugs.python.org/issue20891#msg307553
I fixed a bug and added a test for it, but the test showed an unknown
race condition.
I wrote a fix for the race condition, but I was asked to run a
benchmark and I didn't run it yet.
https://github.com/python/cpython/pull/4700
I hesitate to skip the test until I fix the second bug.
Victor
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