src/test/ui/consts/const-len-underflow-separate-spans.rs

   1 // Check that a constant-evaluation underflow highlights the correct
   2 // spot (where the underflow occurred), while also providing the
   3 // overall context for what caused the evaluation.
   4
   5 const ONE: usize = 1;
   6 const TWO: usize = 2;
   7 const LEN: usize = ONE - TWO;
   8 //~^ ERROR any use of this value will cause an error
   9 //~| WARN this was previously accepted by the compiler but is being phased out
  10
  11 fn main() {
  12     let a: [i8; LEN] = unimplemented!();
  13 //~^ ERROR E0080
  14 }