src/test/ui/array-slice-vec/array_const_index-1.rs

const A: [i32; 0] = [];
const B: i32 = A[1];
//~^ index out of bounds: the length is 0 but the index is 1
//~| ERROR any use of this value will cause an error
//~| WARN this was previously accepted by the compiler but is being phased out

fn main() {
    let _ = B;
}