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-rw-r--r--compiler/coreSyn/CoreFVs.lhs2
1 files changed, 2 insertions, 0 deletions
diff --git a/compiler/coreSyn/CoreFVs.lhs b/compiler/coreSyn/CoreFVs.lhs
index 636c049c42..4011191d75 100644
--- a/compiler/coreSyn/CoreFVs.lhs
+++ b/compiler/coreSyn/CoreFVs.lhs
@@ -5,6 +5,8 @@
Taken quite directly from the Peyton Jones/Lester paper.
\begin{code}
+{-# LANGUAGE CPP #-}
+
-- | A module concerned with finding the free variables of an expression.
module CoreFVs (
-- * Free variables of expressions and binding groups