STINNER Victor <vstin...@python.org> added the comment:
If I understood correctly, Python 3.8 and 3.9 binaries provided by python.org
is *not* impacted by this issue.
Only Python binaries built manually with explicit support for macOS 10.4
("MAC_OS_X_VERSION_MIN_REQUIRED") were impacted.
Python 3.9 and older are not fixed (keep the lock). The workaround is to
require macOS 10.5 or newer. macOS 10.4 was released in 2004, it's maybe time
to stop support it :-)
Python 3.7 (and newer) requires macOS 10.6 or newer (again, I'm talking about
binaries provided by python.org).
> bpo-25920: Remove socket.getaddrinfo() lock on macOS (GH-20177)
I chose to leave the lock for gethostbyname(). Ronald wrote that this lock is
no longer needed:
"As an aside (not to be addressed in the PR): Apparently gethostbyname() and
related functions are thread-safe on macOS. This is according to the manpage on
macOS 10.15. I haven't checked in which version that changed. This allows
avoiding the use of the gethostbyname lock as well."
https://github.com/python/cpython/pull/20177#pullrequestreview-418909595
Please open a separated issue for this lock.
----------
resolution: -> fixed
stage: patch review -> resolved
status: open -> closed
versions: +Python 3.10 -Python 3.9
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<https://bugs.python.org/issue25920>
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