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+Module Short.
+ Set Universe Polymorphism.
+ Inductive relevant (A : Type) (B : Type) : Prop := .
+ Section foo.
+ Variables A B : Type.
+ Definition foo := prod (relevant A B) A.
+ End foo.
+
+ Section bar.
+ Variable A : Type.
+ Variable B : Type.
+ Definition bar := prod (relevant A B) A.
+ End bar.
+
+ Set Printing Universes.
+ Check bar nat Set : Set. (* success *)
+ Check foo nat Set : Set. (* Toplevel input, characters 6-17:
+Error:
+The term "foo (* Top.303 Top.304 *) nat Set" has type
+"Type (* Top.304 *)" while it is expected to have type
+"Set" (Universe inconsistency: Cannot enforce Top.304 = Set because Set
+< Top.304)). *)
+End Short.