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+(* Test on definitions referring to section variables that are not any
+   longer in the current context *)
+
+Section x.
+
+  Hypothesis h : forall(n : nat), n < S n.
+
+  Definition f(n m : nat)(less : n < m) : nat := n + m.
+
+  Lemma a : forall(n : nat), f n (S n) (h n) = 1 + 2 * n.
+  Proof.
+    (* XXX *) admit.
+  Qed.
+
+  Lemma b : forall(n : nat), n < 3 + n.
+  Proof.
+    clear.
+    intros n.
+    Fail assert (H := a n).
+  Abort.
+
+  Let T := True.
+  Definition p := I : T.
+
+  Lemma paradox : False.
+  Proof.
+    clear.
+    set (T := False).
+    Fail pose proof p as H.
+  Abort.