If I haven't somehow missed something the glibc (and related c toolchain components) are quite out of date and could use a rebuild.
According to pacman the build date of the current version is 13 May 2021
There are already some offered PKGBUILDS in this thread https://bbs.archlinux.org/viewtopic.php?id=270662 so maybe that speeds things up too.
I was looking into if there was any reason why the nim package wasn't getting updated (still hasn't been) a while back and found this:
(Caution to the unwary reader, this thread also goes offtopic into 4chan related matters)
https://lists.archlinux.org/pipermail/arch-general/2021-November/049232.html (https://lists.archlinux.org/pipermail/arch-general/2021-November/049232.html)
glibc has been out of date for a long time in arch.
Yeah I noticed, not that it really springs into peoples faces which is probably why it has been simmering for so long.