Description
Bug report
Bug description:
When cibuildwheel runs the musllinux_1_2_i686 configuration, I often see exceptions logged when the end-of-process GC runs:
Exception ignored in: <function _DeleteDummyThreadOnDel.__del__ at 0xf2be5578>
Traceback (most recent call last):
File "/opt/_internal/cpython-3.13.0/lib/python3.13/threading.py", line 1383, in __del__
TypeError: 'NoneType' object does not support the context manager protocol
.Traceback (most recent call last):
File "<string>", line 1, in <module>
from tornado.ioloop import IOLoop; classname = lambda x: x.__class__.__name__; from tornado.platform.asyncio import AsyncIOMainLoop; AsyncIOMainLoop().install(); print(classname(IOLoop.current()))
It looks like something about musl libc is causing _active_limbo_lock to get GC'd before _thread_local_info._track_dummy_thread_ref. This happens on musllinux (1.2) on i686 builds. 64-bit builds (of x86 and arm) and manylinux builds are not affected. Older versions of python are not affected; I have not tested with 3.14 alphas but I think they are likely affected since the relevant code doesn't appear to have changed.
A complete log with this failure can be found at https://github.com/bdarnell/tornado/actions/runs/13459578244/job/37733273132
This issue is not a priority for me. I'm just going to skip this configuration in my CI and I'm filing an issue so I have something to point to.
CPython versions tested on:
3.13
Operating systems tested on:
Linux