[witcher01]

> But there is no clippy lint

There actually is! You can activate the lint with a `#[deny(clippy::integer_arithmetic)]` or by using the lint group `restriction`.[0]

  // https://rust-lang.github.io/rust-clippy/master/index.html#integer_arithmetic
  #[deny(clippy::integer_arithmetic)]

  fn main() {
      let (a, b) = (u32::MAX, 1);
      //let c = a + b; // clippy: `error: integer arithmetic detected`
      let (c, carry) = a.overflowing_add(b); // or any of checked_*, saturating_*, unchecked_*, wrapping_*
      println!("{a} + {b} = {c} (carry bit: {carry})");
      // output: `4294967295 + 1 = 0 (carry bit: true)`
  }

Playground link: https://play.rust-lang.org/?version=stable&mode=debug&editio...

[0]: https://rust-lang.github.io/rust-clippy/master/index.html#in...

[stouset]

TIL, thanks!