src/test/ui/consts/issue-39974.rs

   1 const LENGTH: f64 = 2;
   2
   3 struct Thing {
   4     f: [[f64; 2]; LENGTH],
   5     //~^ ERROR mismatched types
   6     //~| expected `usize`, found `f64`
   7 }
   8
   9 fn main() {
  10     let _t = Thing { f: [[0.0, 0.0], [0.0, 0.0], [0.0, 0.0], [0.0, 0.0]] };
  11 }