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-rw-r--r--utils/genprimopcode/Lexer.x1
1 files changed, 1 insertions, 0 deletions
diff --git a/utils/genprimopcode/Lexer.x b/utils/genprimopcode/Lexer.x
index 520d1e1742..df710d72b3 100644
--- a/utils/genprimopcode/Lexer.x
+++ b/utils/genprimopcode/Lexer.x
@@ -1,5 +1,6 @@
{
+{-# LANGUAGE BangPatterns #-} -- required for versions of Alex before 2.3.4
{-# 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