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-rw-r--r--utils/genprimopcode/Parser.y1
1 files changed, 1 insertions, 0 deletions
diff --git a/utils/genprimopcode/Parser.y b/utils/genprimopcode/Parser.y
index 9bf20c2dd7..b20414d7d2 100644
--- a/utils/genprimopcode/Parser.y
+++ b/utils/genprimopcode/Parser.y
@@ -1,5 +1,6 @@
{
+{-# LANGUAGE BangPatterns #-} -- required for versions of Happy before 1.18.6
{-# OPTIONS -w -Wwarn #-}
-- The above warning supression flag is a temporary kludge.
-- While working on this module you are encouraged to remove it and fix