X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Frename%2FRnBinds.lhs;h=1c7bebbd7d0914e1803f8f3dc1e7a4ecb567e802;hb=098f818b622e5095fbd3f6318a463fcb2ce14fc6;hp=d7a5952ee297a5896cd45b7e6edda3a3253a03ad;hpb=bb7d80b3b8d1396d481d3b24302bee24a3d92f71;p=ghc-hetmet.git

diff --git a/compiler/rename/RnBinds.lhs b/compiler/rename/RnBinds.lhs
index d7a5952..1c7bebb 100644
--- a/compiler/rename/RnBinds.lhs
+++ b/compiler/rename/RnBinds.lhs
@@ -33,12 +33,12 @@ import RnEnv		( bindLocatedLocalsRn, lookupLocatedBndrRn,
 			  warnUnusedLocalBinds, mapFvRn, extendTyVarEnvFVRn,
 			)
 import DynFlags	( DynFlag(..) )
-import Name		( Name, nameOccName, nameSrcLoc )
+import Name
 import NameEnv
 import NameSet
 import PrelNames	( isUnboundName )
 import RdrName		( RdrName, rdrNameOcc )
-import SrcLoc		( mkSrcSpan, Located(..), unLoc )
+import SrcLoc		( Located(..), unLoc )
 import ListSetOps	( findDupsEq )
 import BasicTypes	( RecFlag(..) )
 import Digraph		( SCC(..), stronglyConnComp )
@@ -629,10 +629,20 @@ dupSigDeclErr sigs@(L loc sig : _)
     ppr_sig (L loc sig) = ppr loc <> colon <+> ppr sig
 
 unknownSigErr (L loc sig)
-  = addErrAt loc $
-	sep [ptext SLIT("Misplaced") <+> what_it_is <> colon, ppr sig]
+  = do	{ mod <- getModule
+	; addErrAt loc $
+		vcat [sep [ptext SLIT("Misplaced") <+> what_it_is <> colon, ppr sig],
+		      extra_stuff mod sig] }
   where
     what_it_is = hsSigDoc sig
+    extra_stuff mod  (TypeSig (L _ n) _)
+	| nameIsLocalOrFrom mod n
+	= ptext SLIT("The type signature must be given where")
+		<+> quotes (ppr n) <+> ptext SLIT("is declared")
+	| otherwise
+	= ptext SLIT("You cannot give a type signature for an imported value")
+
+    extra_stuff mod other = empty
 
 methodBindErr mbind
  =  hang (ptext SLIT("Pattern bindings (except simple variables) not allowed in instance declarations"))