error: unconstrained generic constant
  --> $DIR/array-size-in-generic-struct-param.rs:8:38
   |
LL | struct ArithArrayLen<const N: usize>([u32; 0 + N]);
   |                                      ^^^^^^^^^^^^
   |
   = help: try adding a `where` bound using this expression: `where [(); 0 + N]:`

error: overly complex generic constant
  --> $DIR/array-size-in-generic-struct-param.rs:19:15
   |
LL |     arr: [u8; CFG.arr_size],
   |               ^^^^^^^^^^^^ field access is not supported in generic constants
   |
   = help: consider moving this anonymous constant into a `const` function
   = note: this operation may be supported in the future

error: aborting due to 2 previous errors