X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=blobdiff_plain;f=compiler%2Ftypecheck%2FTcRnMonad.lhs;h=0b5e4fc72a1a1f0c443d0ad6f1cf07c3cb74aae4;hp=1fa44ca308ec26c2aa184d8bebdad2486c5b3a3c;hb=afef39736dcde6f4947a6f362f9e6b3586933db4;hpb=bb3dcf3988d766149f7793b93210db5f64e91542

diff --git a/compiler/typecheck/TcRnMonad.lhs b/compiler/typecheck/TcRnMonad.lhs
index 1fa44ca..0b5e4fc 100644
--- a/compiler/typecheck/TcRnMonad.lhs
+++ b/compiler/typecheck/TcRnMonad.lhs
@@ -50,7 +50,8 @@ import Outputable
 import UniqSupply	( UniqSupply, mkSplitUniqSupply, uniqFromSupply, splitUniqSupply )
 import UniqFM		( unitUFM )
 import Unique		( Unique )
-import DynFlags		( DynFlags(..), DynFlag(..), dopt, dopt_set, GhcMode )
+import DynFlags		( DynFlags(..), DynFlag(..), dopt, dopt_set,
+			  dopt_unset, GhcMode ) 
 import StaticFlags	( opt_PprStyle_Debug )
 import Bag		( snocBag, unionBags )
 import Panic		( showException )
@@ -268,6 +269,10 @@ setOptM :: DynFlag -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
 setOptM flag = updEnv (\ env@(Env { env_top = top }) ->
 			 env { env_top = top { hsc_dflags = dopt_set (hsc_dflags top) flag}} )
 
+unsetOptM :: DynFlag -> TcRnIf gbl lcl a -> TcRnIf gbl lcl a
+unsetOptM flag = updEnv (\ env@(Env { env_top = top }) ->
+			 env { env_top = top { hsc_dflags = dopt_unset (hsc_dflags top) flag}} )
+
 ifOptM :: DynFlag -> TcRnIf gbl lcl () -> TcRnIf gbl lcl ()	-- Do it flag is true
 ifOptM flag thing_inside = do { b <- doptM flag; 
 				if b then thing_inside else return () }