1 files changed, 67 insertions, 0 deletions
diff --git a/test-suite/success/Mod_strengthen.v b/test-suite/success/Mod_strengthen.v
new file mode 100644
index 000000000..449610be6
--- /dev/null
+++ b/test-suite/success/Mod_strengthen.v
@@ -0,0 +1,67 @@
+Module Type Sub.
+  Axiom Refl1 : forall x : nat, x = x.
+  Axiom Refl2 : forall x : nat, x = x.
+  Axiom Refl3 : forall x : nat, x = x.
+  Inductive T : Set :=
+      A : T.
+End Sub.
+
+Module Type Main.
+  Declare Module M: Sub.
+End Main.
+
+
+Module A <: Main.
+  Module M <: Sub.
+    Lemma Refl1 : forall x : nat, x = x.
+      intros; reflexivity.
+    Qed.
+    Axiom Refl2 : forall x : nat, x = x.
+    Lemma Refl3 : forall x : nat, x = x.
+      intros; reflexivity.
+    Defined.
+    Inductive T : Set :=
+        A : T.
+  End M.
+End A.
+
+
+
+(* first test *)
+
+Module F (S: Sub).
+  Module M := S.
+End F.
+
+Module B <: Main with Module M:=A.M := F A.M.
+
+
+
+(* second test *)
+
+Lemma r1 : (A.M.Refl1 = B.M.Refl1).
+Proof.
+  reflexivity.
+Qed.
+
+Lemma r2 : (A.M.Refl2 = B.M.Refl2).
+Proof.
+  reflexivity.
+Qed.
+
+Lemma r3 : (A.M.Refl3 = B.M.Refl3).
+Proof.
+  reflexivity.
+Qed.
+
+Lemma t : (A.M.T = B.M.T).
+Proof.
+  reflexivity.
+Qed.
+
+Lemma a : (A.M.A = B.M.A).
+Proof.
+  reflexivity.
+Qed.
+
+