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-rw-r--r--compiler/utils/FastString.lhs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/utils/FastString.lhs b/compiler/utils/FastString.lhs
index 5a78c0b59b..0396c02749 100644
--- a/compiler/utils/FastString.lhs
+++ b/compiler/utils/FastString.lhs
@@ -2,7 +2,7 @@
% (c) The University of Glasgow, 1997-2006
%
\begin{code}
-{-# LANGUAGE BangPatterns #-}
+{-# LANGUAGE BangPatterns, CPP, DeriveDataTypeable, MagicHash, UnboxedTuples #-}
{-# OPTIONS_GHC -O -funbox-strict-fields #-}
-- We always optimise this, otherwise performance of a non-optimised
-- compiler is severely affected