New submission from cagney <andrew.cag...@gmail.com>:
Buried in issue36533; it should probably be turned into a test case.
Exception ignored in: <function _after_at_fork_weak_calls at 0x7f7307550378>
Traceback (most recent call last):
File "/home/python/v3.7.3/lib/python3.7/logging/__init__.py", line
269, in _after_at_fork_weak_calls
_at_fork_weak_calls('release')
File "/home/python/v3.7.3/lib/python3.7/logging/__init__.py", line
254, in _at_fork_weak_calls
for instance in _at_fork_acquire_release_weakset:
File "/home/python/v3.7.3/lib/python3.7/_weakrefset.py", line 60, in __iter__
for itemref in self.data:
RuntimeError: Set changed size during iteration
Exception in thread Thread-1:
Traceback (most recent call last):
File "/home/python/v3.7.3/lib/python3.7/threading.py", line 917, in
_bootstrap_inner
self.run()
File "/home/python/v3.7.3/lib/python3.7/threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "./btc.py", line 11, in lockie
h = logging.Handler()
File "/home/python/v3.7.3/lib/python3.7/logging/__init__.py", line
824, in __init__
self.createLock()
File "/home/python/v3.7.3/lib/python3.7/logging/__init__.py", line
847, in createLock
_register_at_fork_acquire_release(self)
File "/home/python/v3.7.3/lib/python3.7/logging/__init__.py", line
250, in _register_at_fork_acquire_release
_at_fork_acquire_release_weakset.add(instance)
File "/home/python/v3.7.3/lib/python3.7/_weakrefset.py", line 83, in add
self._commit_removals()
File "/home/python/v3.7.3/lib/python3.7/_weakrefset.py", line 56, in
_commit_removals
discard(l.pop())
IndexError: pop from empty list
----------
components: Library (Lib)
files: btc.py
messages: 339866
nosy: cagney
priority: normal
severity: normal
status: open
title: race in logging code when fork()
type: crash
versions: Python 3.7
Added file: https://bugs.python.org/file48258/btc.py
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36587>
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