Add counter-example for PR#5343

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@11298 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

testsuite/tests/typing-modules-bugs/pr5343_bad.ml

@@ -0,0 +1,13 @@
+module M : sig
+  type 'a t
+  type u = u t and v = v t
+  val f : int -> u
+  val g : v -> bool
+end = struct
+  type 'a t = 'a
+  type u = int and v = bool
+  let f x = x
+  let g x = x
+end;;
+
+let h (x : int) : bool = M.g (M.f x);;