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-rw-r--r--compiler/cmm/CmmLex.x1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/cmm/CmmLex.x b/compiler/cmm/CmmLex.x
index a5defb618a..50e9aea9e8 100644
--- a/compiler/cmm/CmmLex.x
+++ b/compiler/cmm/CmmLex.x
@@ -11,6 +11,7 @@
-----------------------------------------------------------------------------
{
+{-# LANGUAGE BangPatterns #-}
{-# OPTIONS -Wwarn -w #-}
-- The above -Wwarn supression flag is a temporary kludge.
-- While working on this module you are encouraged to remove it and fix