X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Fstranal%2FWwLib.lhs;h=d066f44a1a0dd120e1a2ca6a23f78af70247edea;hp=31d09901ec9fdaa2a1f9ffe3778964c65a719d75;hb=4ff3da9aa11dc1c5d00f03248dc41c7d84309fa1;hpb=4f56b4074079380d4b115a05d5aa71004f716710

diff --git a/compiler/stranal/WwLib.lhs b/compiler/stranal/WwLib.lhs
index 31d0990..d066f44 100644
--- a/compiler/stranal/WwLib.lhs
+++ b/compiler/stranal/WwLib.lhs
@@ -27,9 +27,7 @@ import NewDemand	( Demand(..), DmdResult(..), Demands(..) )
 import MkId		( realWorldPrimId, voidArgId, mkRuntimeErrorApp, rUNTIME_ERROR_ID,
                           mkUnpackCase, mkProductBox )
 import TysWiredIn	( tupleCon )
-import Type		( Type, isUnLiftedType, mkFunTys,
-			  splitForAllTys, splitFunTys, isAlgType
-			)
+import Type
 import Coercion         ( mkSymCoercion, splitNewTypeRepCo_maybe )
 import BasicTypes	( Boxity(..) )
 import Var              ( Var, isId )
@@ -422,8 +420,9 @@ mkWWcpr :: Type                              -- function body type
 		   Type)			-- Type of worker's body 
 
 mkWWcpr body_ty RetCPR
-    | not (isAlgType body_ty)
-    = WARN( True, text "mkWWcpr: non-algebraic body type" <+> ppr body_ty )
+    | not (isClosedAlgType body_ty)
+    = WARN( True, 
+            text "mkWWcpr: non-algebraic or open body type" <+> ppr body_ty )
       returnUs (id, id, body_ty)
 
     | n_con_args == 1 && isUnLiftedType con_arg_ty1