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-rw-r--r--compiler/nativeGen/RegAlloc/Liveness.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/nativeGen/RegAlloc/Liveness.hs b/compiler/nativeGen/RegAlloc/Liveness.hs
index 6dd4cec0de..b0e763a6f0 100644
--- a/compiler/nativeGen/RegAlloc/Liveness.hs
+++ b/compiler/nativeGen/RegAlloc/Liveness.hs
@@ -5,6 +5,7 @@
-- (c) The University of Glasgow 2004-2013
--
-----------------------------------------------------------------------------
+{-# LANGUAGE FlexibleContexts, TypeFamilies #-}
module RegAlloc.Liveness (
RegSet,
RegMap, emptyRegMap,