[bostick]

FYI, in my opinion, clang `[[musttail]]` is not quite ready for prime time. (cannot speak to GCC)

I was excited when it was introduced but quickly ran into issues.

Here is a silent miscompilation involving `[[musttail]]` that I reported in 2022 and is still open: https://github.com/llvm/llvm-project/issues/56435