error[E0790]: cannot refer to the associated constant on trait without specifying the corresponding `impl` type --> $DIR/issue-63496.rs:4:21 | LL | const C: usize; | --------------- `A::C` defined here LL | LL | fn f() -> ([u8; A::C], [u8; A::C]); | ^^^^ cannot refer to the associated constant of trait error[E0790]: cannot refer to the associated constant on trait without specifying the corresponding `impl` type --> $DIR/issue-63496.rs:4:33 | LL | const C: usize; | --------------- `A::C` defined here LL | LL | fn f() -> ([u8; A::C], [u8; A::C]); | ^^^^ cannot refer to the associated constant of trait error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0790`.