Robustify the treatement of DFunUnfolding

[ghc-hetmet.git] / compiler / simplCore / Simplify.lhs

diff --git a/compiler/simplCore/Simplify.lhs b/compiler/simplCore/Simplify.lhs
index b0718e4..ec7e190 100644 (file)
--- a/compiler/simplCore/Simplify.lhs
+++ b/compiler/simplCore/Simplify.lhs
@@ -705,8 +705,8 @@ simplUnfolding :: SimplEnv-> TopLevelFlag
               -> OccInfo -> OutExpr
               -> Unfolding -> SimplM Unfolding
 -- Note [Setting the new unfolding]
-simplUnfolding env _ _ _ _ (DFunUnfolding con ops)
-  = return (DFunUnfolding con ops')
+simplUnfolding env _ _ _ _ (DFunUnfolding ar con ops)
+  = return (DFunUnfolding ar con ops')
   where
     ops' = map (substExpr (text "simplUnfolding") env) ops