You could add something like that, but I suspect the new default behaviour would then break a number of programs (in particular things that use reflect and unsa

You could add something like that, but I suspect the new default behaviour would then break a number of programs (in particular things that use reflect and unsafe). There aren't many guarantees around this kind of usage but in practice the go devs are pretty reluctant to make changes that are known to break things without a very good reason, even in things where there's not a formal compatability promise.