So maybe a proc macro which lets you #[dummy(Clone,Eq,PartialEq)] instead of #[derive(Clone,Eq,PartialEq)] ? Although you said "mode of operation" and I can't

So maybe a proc macro which lets you #[dummy(Clone,Eq,PartialEq)] instead of #[derive(Clone,Eq,PartialEq)] ? Although you said "mode of operation" and I can't get behind that idea, I think the choice to just wrap overflow by default for the integer types in release builds was probably a mistake. It's good that I can turn it off, but it shouldn't have been the default.