CWG 2022-11-10

See 10.2 [module.interface] paragraph 7.

Consider:

  // module interface unit
  export module M;
  export enum E : int;
  enum E : int { e };

  // other translation unit
  import M;
  auto a = E::e;  // #1: OK?
  auto b = e;     // #2: OK?

It is unclear whether the enumerator name e is or ought to be visible in the other translation unit.

See also issues 2588 (friend declarations) and 2480.