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-rw-r--r--compiler/GHC/Types/Unique/FM.hs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/GHC/Types/Unique/FM.hs b/compiler/GHC/Types/Unique/FM.hs
index 07aa675d3b..102025bda2 100644
--- a/compiler/GHC/Types/Unique/FM.hs
+++ b/compiler/GHC/Types/Unique/FM.hs
@@ -23,7 +23,7 @@ of arguments of combining function.
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE ScopedTypeVariables #-}
-{-# LANGUAGE CPP #-}
+
{-# OPTIONS_GHC -Wall #-}
module GHC.Types.Unique.FM (