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-rw-r--r--compiler/specialise/Rules.lhs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/specialise/Rules.lhs b/compiler/specialise/Rules.lhs
index 70fc09a2ef..2abf7fbdca 100644
--- a/compiler/specialise/Rules.lhs
+++ b/compiler/specialise/Rules.lhs
@@ -4,6 +4,8 @@
\section[CoreRules]{Transformation rules}
\begin{code}
+{-# LANGUAGE CPP #-}
+
-- | Functions for collecting together and applying rewrite rules to a module.
-- The 'CoreRule' datatype itself is declared elsewhere.
module Rules (