error[E0599]: no variant named `A` found for type `SomeEnum` in the current scope
  --> $DIR/issue-23217.rs:12:9
   |
11 | pub enum SomeEnum {
   | ----------------- variant `A` not found here
12 |     B = SomeEnum::A,
   |         ^^^^^^^^^^^ variant not found in `SomeEnum`

error: aborting due to previous error

If you want more information on this error, try using "rustc --explain E0599"