X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2FdeSugar%2FDsListComp.lhs;h=7fc4fb9654c62d9579a0be8edabbe522bf704841;hb=6a05ec5ef5373f61b7f9f5bdc344483417fa801b;hp=6a25a7555068b8dc5fadd8cdcc1f7096a92f4b62;hpb=dbc5ae8aa41a629151eeb38987e2f5c83a4d7d53;p=ghc-hetmet.git

diff --git a/compiler/deSugar/DsListComp.lhs b/compiler/deSugar/DsListComp.lhs
index 6a25a75..7fc4fb9 100644
--- a/compiler/deSugar/DsListComp.lhs
+++ b/compiler/deSugar/DsListComp.lhs
@@ -6,6 +6,13 @@
 Desugaring list comprehensions and array comprehensions
 
 \begin{code}
+{-# OPTIONS -w #-}
+-- The above warning supression flag is a temporary kludge.
+-- While working on this module you are encouraged to remove it and fix
+-- any warnings in the module. See
+--     http://hackage.haskell.org/trac/ghc/wiki/Commentary/CodingStyle#Warnings
+-- for details
+
 module DsListComp ( dsListComp, dsPArrComp ) where
 
 #include "HsVersions.h"
@@ -21,7 +28,6 @@ import DsMonad		-- the monadery used in the desugarer
 import DsUtils
 
 import DynFlags
-import StaticFlags
 import CoreUtils
 import Var
 import Type
@@ -50,7 +56,7 @@ dsListComp lquals body elt_ty
     let
 	quals = map unLoc lquals
     in
-    if opt_RulesOff || dopt Opt_IgnoreInterfacePragmas dflags
+    if not (dopt Opt_RewriteRules dflags) || dopt Opt_IgnoreInterfacePragmas dflags
 	-- Either rules are switched off, or we are ignoring what there are;
 	-- Either way foldr/build won't happen, so use the more efficient
 	-- Wadler-style desugaring