> CPUs have been "alerting" through their carry and overflow bits in registers since forever so this isn't some exclusive feature that only rust compiler writers were smart enough to take advantage of.

Another way of putting it: C/C++ have been handling overflow badly since forever despite hardware support, but now Rust and other more security aware systems languages are free to take advantage of it.

I hope Rust will take the opportunity sooner or later, as the semantics seem to allow it.