/stable/12 future

From: Jan Beich <jbeich_at_FreeBSD.org>
Date: Wed, 08 Dec 2021 19:47:14 UTC
12.3-RELEASE still uses Clang/libc++ 10 from 1 year ago. Do you plan
to update in future as /stable/12 is supported until 2024-06-30?

libc++ lags behind libstdc++ on C++20 features and sticking to an old
version puts the entire branch on a deathbed. Given drm-kmod on
/stable/12 is stuck with Linux 4.16 era (discontinued after 2018-06-26)
/stable/12 is already mostly dead from desktop POV.

See also
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=215193
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260139