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-rw-r--r--compiler/utils/FastFunctions.lhs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/utils/FastFunctions.lhs b/compiler/utils/FastFunctions.lhs
index b1dacdcd9b..457fcc9c93 100644
--- a/compiler/utils/FastFunctions.lhs
+++ b/compiler/utils/FastFunctions.lhs
@@ -4,6 +4,7 @@ Z%
\section{Fast functions}
\begin{code}
+{-# LANGUAGE CPP, MagicHash, UnboxedTuples #-}
module FastFunctions (
unsafeChr, inlinePerformIO, unsafeDupableInterleaveIO,