X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Fghci%2FDebugger.hs;h=c0ac9d3166307295d4ba0c03795216d1e25710c7;hb=e314b86f6290e5440a46cd5cc29f7878cb78c6fb;hp=e13b8a809a8648d50c7c7dd91c33e01ae99fe4da;hpb=463f566a6504f193e4602299be5f2400ca10d21a;p=ghc-hetmet.git

diff --git a/compiler/ghci/Debugger.hs b/compiler/ghci/Debugger.hs
index e13b8a8..c0ac9d3 100644
--- a/compiler/ghci/Debugger.hs
+++ b/compiler/ghci/Debugger.hs
@@ -81,8 +81,9 @@ pprintClosureCommand session bindThings force str = do
      --  Then, we extract a substitution,
      --  mapping the old tyvars to the reconstructed types.
        let reconstructed_type = termType term
-           subst = unifyRTTI (idType id) (reconstructed_type)
-       return (term',subst)
+       mb_subst <- withSession cms $ \hsc_env ->
+                      improveRTTIType hsc_env (idType id) (reconstructed_type)
+       return (term', fromMaybe emptyTvSubst mb_subst)
 
    tidyTermTyVars :: Session -> Term -> IO Term
    tidyTermTyVars (Session ref) t = do
@@ -177,7 +178,6 @@ showTerm cms@(Session ref) term = do
            GHC.setSessionDynFlags cms dflags
   cPprShowable prec NewtypeWrap{ty=new_ty,wrapped_term=t} = 
       cPprShowable prec t{ty=new_ty}
-  cPprShowable prec RefWrap{wrapped_term=t} = cPprShowable prec t
   cPprShowable _ _ = return Nothing
 
   needsParens ('"':_) = False   -- some simple heuristics to see whether parens