error: `[u8; Bar::<u32>::value()]` is forbidden as the type of a const generic parameter
  --> $DIR/issue-75047.rs:14:21
   |
LL | struct Foo<const N: [u8; Bar::<u32>::value()]>;
   |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: the only supported types are integers, `bool` and `char`
   = help: more complex types are supported with `#![feature(adt_const_params)]`

error: aborting due to previous error