I can do that in C/C++ where regular signed integer overflow is otherwise undefined behavior. The point is just Rust defining the behavior (no UB!) didn't do a

I can do that in C/C++ where regular signed integer overflow is otherwise undefined behavior. The point is just Rust defining the behavior (no UB!) didn't do a damn thing to help anyone since if you actually want and expect overflow you need to use specific functions/wrappers to do that anyway. You also probably want the carry flag anyway so having regular addition be "defined behavior" is still useless.