X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Ftypes%2FCoercion.lhs;h=fb91a0de67d9d14d63e8e9d637e903c04e37aaee;hb=feb584b7ffd49827ff2b6e716965cfdcd344570e;hp=d715016352cb4b2da0074a5890b79a9a5f192fc8;hpb=909d2dd885f5eebaf7c12cf15d5ac153d646566e;p=ghc-hetmet.git

diff --git a/compiler/types/Coercion.lhs b/compiler/types/Coercion.lhs
index d715016..fb91a0d 100644
--- a/compiler/types/Coercion.lhs
+++ b/compiler/types/Coercion.lhs
@@ -38,7 +38,7 @@ import Type	  ( Type, Kind, PredType, substTyWith, mkAppTy, mkForAllTy,
                     mkFunTy, splitAppTy_maybe, splitForAllTy_maybe, coreView,
                     kindView, mkTyConApp, isCoercionKind, isEqPred, mkAppTys,
                     coreEqType, splitAppTys, isTyVarTy, splitTyConApp_maybe,
-                    tyVarsOfType
+                    tyVarsOfType, mkTyVarTys
                   )
 import TyCon      ( TyCon, tyConArity, mkCoercionTyCon, isNewTyCon,
                     newTyConRhs, newTyConCo, 
@@ -340,10 +340,10 @@ mkDataInstCoercion name tvs family instTys rep_tycon
   where
     coArity = length tvs
 
-    rule args = (substTyWith tvs tys $		-- with sigma = [tys/tvs],
-		   TyConApp family instTys,	--     sigma (F ts)
-		 TyConApp rep_tycon instTys,	-- :=: R tys
-		 rest)				-- surplus arguments
+    rule args = (substTyWith tvs tys $		     -- with sigma = [tys/tvs],
+		   TyConApp family instTys,	     --       sigma (F ts)
+		 TyConApp rep_tycon tys,	     --   :=: R tys
+		 rest)				     -- surplus arguments
       where
         tys  = take coArity args
         rest = drop coArity args