Hello,
I have started to compile a document that tries to collect everything
a C library needs for C23 compliance:
https://htmlpreview.github.io/?https://icube-forge.unistra.fr/icps/c23-library/-/raw/main/README.html
This is by far not complete and I will try to fill the holes in the
next weeks. Let me know if you have any particular
questions/remarks/additions.