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+(* Checking that let-in's hiding evars are expanded when enforcing
+ "occur-check" *)
+
+Require Import List.
+
+Definition foo x y :=
+let xy := (x, y) in
+let bar xys :=
+ match xys with
+ | nil => xy :: nil
+ | xy' :: xys' => xy' :: xys'
+ end in bar (nil : list (nat * nat)).