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diff --git a/test-suite/bugs/closed/3948.v b/test-suite/bugs/closed/3948.v
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+++ b/test-suite/bugs/closed/3948.v
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+Module Type S.
+Parameter t : Type.
+End S.
+
+Module Bar(X : S).
+Definition elt := X.t.
+Axiom fold : elt.
+End Bar.
+
+Module Make (Z: S) := Bar(Z).
+
+Declare Module Y : S.
+
+Module Type Interface.
+Parameter constant : unit.
+End Interface.
+
+Module DepMap : Interface.
+Module Dom := Make(Y).
+Definition constant : unit :=
+  let _ := @Dom.fold in tt.
+End DepMap.
+
+Print Assumptions DepMap.constant.