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diff --git a/test-suite/bugs/closed/bug_8794.v b/test-suite/bugs/closed/bug_8794.v
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+(* This used to raise an anomaly in 8.8 *)
+
+Inductive T := Tau (t : T).
+
+Notation idT t := (match t with Tau t => Tau t end).
+
+Lemma match_itree : forall (t : T), t = idT t.
+Proof. destruct t; auto. Qed.
+
+Lemma what (k : unit -> T) : k tt = k tt.
+Proof. rewrite match_itree. Abort.