There is a new pull request by oreo639 against master on the void-packages repository

https://github.com/oreo639/void-packages musl
https://github.com/void-linux/void-packages/pull/39279

musl: add support for SIGEV_THREAD_ID timers
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#### Testing the changes
- I tested the changes in this PR: **NO**

[ci skip]

This avoids having to use `sigev_notify_function` to set `sigev_notify_thread_id` and defines `SIGEV_THREAD_ID`.
This is useful for the gcc12 PR: https://github.com/void-linux/void-packages/pull/34902

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A patch file from https://github.com/void-linux/void-packages/pull/39279.patch is attached