scottmcm

I'll have to dig in more to try to figure out the implications. I didn't do any godbolt explorations before posting the above 🙃 If nothing else it's interesting that...

From my side, feel free to revert my PR for now. I likely won't be able to look at fixing this in the short term.

Starting a lang RFC so it's officially approved, and we can use that to update docs elsewhere following this. @rfcbot fcp merge