File: bug_2135.v

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(* Check that metas are whd-normalized before trying 2nd-order unification *)
Lemma test :
  forall (D:Type) (T : forall C, option C) (Q:forall D, option D -> Prop),
  (forall (A : Type) (P : forall B:Type, option B -> Prop), P A (T A))
  -> Q D (T D).
Proof.
  intros D T Q H.
  pattern (T D). apply H.
Qed.