[project @ 2002-03-08 15:50:53 by simonpj]

[ghc-hetmet.git] / ghc / compiler / typecheck / TcPat.lhs

diff --git a/ghc/compiler/typecheck/TcPat.lhs b/ghc/compiler/typecheck/TcPat.lhs
index e436485..9f7dbc0 100644 (file)
--- a/ghc/compiler/typecheck/TcPat.lhs
+++ b/ghc/compiler/typecheck/TcPat.lhs
@@ -24,7 +24,7 @@ import Name           ( Name )
 import FieldLabel      ( fieldLabelName )
 import TcEnv           ( tcLookupClass, tcLookupDataCon, tcLookupGlobalId, tcLookupId )
 import TcMType                 ( tcInstTyVars, newTyVarTy, getTcTyVar, putTcTyVar )
-import TcType          ( TcType, TcTyVar, TcSigmaType,
+import TcType          ( TcType, TcTyVar, TcSigmaType, TyVarDetails(VanillaTv),
                          mkTyConApp, mkClassPred, liftedTypeKind, tcGetTyVar_maybe,
                          isHoleTyVar, openTypeKind )
 import TcUnify         ( tcSub, unifyTauTy, unifyListTy, unifyPArrTy,
@@ -393,7 +393,7 @@ tcConstructor pat con_name
             -- behave differently when called, not when used for
             -- matching.
     in
-    tcInstTyVars (ex_tvs ++ tvs)       `thenNF_Tc` \ (all_tvs', ty_args', tenv) ->
+    tcInstTyVars VanillaTv (ex_tvs ++ tvs)     `thenNF_Tc` \ (all_tvs', ty_args', tenv) ->
     let
        ex_theta' = substTheta tenv ex_theta
        arg_tys'  = map (substTy tenv) arg_tys