src/test/ui/consts/const-len-underflow-subspans.rs

   1 // Check that a constant-evaluation underflow highlights the correct
   2 // spot (where the underflow occurred).
   3
   4 const ONE: usize = 1;
   5 const TWO: usize = 2;
   6
   7 fn main() {
   8     let a: [i8; ONE - TWO] = unimplemented!();
   9     //~^ ERROR evaluation of constant value failed
  10     //~| attempt to compute `1_usize - 2_usize` which would overflow
  11 }