[issue42357] Wrong Availability for signal.SIGCHLD

[Maiyun Zhang]

Change by Maiyun Zhang <myzhang1029 at hotmail.com>:


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keywords: +patch
pull_requests: +22177
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/23285

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42357>
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