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diff --git a/testsuite/tests/rep-poly/RepPolyWrappedVar.hs b/testsuite/tests/rep-poly/RepPolyWrappedVar.hs
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+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE PolyKinds #-}
+{-# LANGUAGE UnboxedTuples #-}
+{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE MagicHash #-}
+
+module RepPolyWrappedVar where
+
+import GHC.Exts
+
+primop :: forall (l :: Levity) (a :: TYPE ('BoxedRep l)).
+ a -> Int -> (State# RealWorld -> (# State# RealWorld, Bool #))
+ -> State# RealWorld -> (# State# RealWorld, Weak# Int #)
+primop = mkWeak# @a @Int @Bool