error[E0080]: evaluation of `test::<0>::{constant#0}` failed --> $DIR/from-sig-fail.rs:4:35 | LL | fn test() -> [u8; N - 1] { | ^^^^^ attempt to compute `0_usize - 1_usize`, which would overflow error: aborting due to previous error For more information about this error, try `rustc --explain E0080`.