> But the likely destiny of C++ is to inherit the provenance rules that are an adjunct to C23, PNVI-ae-udi, Provenance Not Via Integers, Addresses Exposed, User Disambiguates

There's a competing proposal in C++ land to add provenance via angelic nondeterminism: if there's some provenance that makes the code non-UB, then use that provenance. (As you might imagine, I'm not a big fan of that proposal, but WG21 seems to love it a lot more than I do.)