Fix bug in type checking interface DataAlts

[ghc-hetmet.git] / compiler / iface / TcIface.lhs

diff --git a/compiler/iface/TcIface.lhs b/compiler/iface/TcIface.lhs
index 94e0dcb..051ec04 100644 (file)
--- a/compiler/iface/TcIface.lhs
+++ b/compiler/iface/TcIface.lhs
@@ -35,7 +35,7 @@ import HscTypes               ( ExternalPackageState(..),
                          emptyModDetails, lookupTypeEnv, lookupType, typeEnvIds )
 import InstEnv         ( Instance(..), mkImportedInstance )
 import CoreSyn
-import CoreUtils       ( exprType, dataConInstPat )
+import CoreUtils       ( exprType, dataConOccInstPat )
 import CoreUnfold
 import CoreLint                ( lintUnfolding )
 import WorkWrap                ( mkWrapper )
@@ -680,7 +680,7 @@ tcIfaceAlt (tycon, inst_tys) (IfaceTupleAlt boxity, arg_occs, rhs)
 tcIfaceDataAlt con inst_tys arg_strs rhs
   = do { us <- newUniqueSupply
        ; let uniqs = uniqsFromSupply us
-       ; let   (ex_tvs, co_tvs, arg_ids) = dataConInstPat uniqs con inst_tys
+       ; let   (ex_tvs, co_tvs, arg_ids) = dataConOccInstPat uniqs arg_occs con inst_tys
                 all_tvs                   = ex_tvs ++ co_tvs
 
        ; rhs' <- extendIfaceTyVarEnv all_tvs   $