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-rw-r--r--compiler/parser/Lexer.x1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/parser/Lexer.x b/compiler/parser/Lexer.x
index c8a5378398..07179b8584 100644
--- a/compiler/parser/Lexer.x
+++ b/compiler/parser/Lexer.x
@@ -32,6 +32,7 @@
{
-- XXX The above flags turn off warnings in the generated code:
+{-# LANGUAGE BangPatterns #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}
{-# OPTIONS_GHC -fno-warn-unused-binds #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}