error[E0446]: private type `fn(u8) -> u8 {my_const_fn}` in public interface --> $DIR/eval-privacy.rs:16:5 | LL | type AssocTy = Const<{ my_const_fn(U) }>; | ^^^^^^^^^^^^ can't leak private type ... LL | const fn my_const_fn(val: u8) -> u8 { | ----------------------------------- `fn(u8) -> u8 {my_const_fn}` declared as private error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0446`.