File: bug_19072.v

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Set Universe Polymorphism.

Definition demo@{srt;u |} : True.
Proof.
  abstract exact I.
Defined.

(* abstract doesn't restrict named qualities and universes
   (debatable behaviour but that's what it does currently) *)
Check demo@{Type;Set}.

Definition baz@{q;u|} (A:Type@{q;u}) (x:A) : A.
Proof.
  abstract exact x.
Defined.