Comment by afdbcreid

It does apply, of course (even if not to this case specifically). The implemented Rust semantics are not sound, as evidenced by this issue. We need to find (or adjust) sound semantics. Which, mathematically, is equivalent to designing Rust from scratch (ignoring things like RustBelt because they did not formalize the entire system). Due to Rice's theorem we know we need to give up some sound programs. Can we give up exactly the programs we already gave up for the previous Rust? Maybe, maybe not.