error[E0015]: calls in constants are limited to constant functions, tuple structs and tuple variants
  --> $DIR/issue-39559-2.rs:14:24
   |
LL |     let array: [usize; Dim3::dim()]
   |                        ^^^^^^^^^^^

error[E0080]: evaluation of constant value failed
  --> $DIR/issue-39559-2.rs:14:24
   |
LL |     let array: [usize; Dim3::dim()]
   |                        ^^^^^^^^^^^ calling non-const function `<Dim3 as Dim>::dim`

error[E0015]: calls in constants are limited to constant functions, tuple structs and tuple variants
  --> $DIR/issue-39559-2.rs:17:15
   |
LL |         = [0; Dim3::dim()];
   |               ^^^^^^^^^^^

error[E0080]: evaluation of constant value failed
  --> $DIR/issue-39559-2.rs:17:15
   |
LL |         = [0; Dim3::dim()];
   |               ^^^^^^^^^^^ calling non-const function `<Dim3 as Dim>::dim`

error: aborting due to 4 previous errors

Some errors occurred: E0015, E0080.
For more information about an error, try `rustc --explain E0015`.