| error[E0080]: attempt to compute `1_usize - 2_usize`, which would overflow | |
| --> $DIR/const-len-underflow-subspans.rs:8:17 | |
| | | |
| LL | let a: [i8; ONE - TWO] = unimplemented!(); | |
| | ^^^^^^^^^ evaluation of `main::{constant#0}` failed here | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0080`. |