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-rw-r--r--compiler/GHC/Parser/Lexer.x1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/GHC/Parser/Lexer.x b/compiler/GHC/Parser/Lexer.x
index 1466e7da71..7c9b951eba 100644
--- a/compiler/GHC/Parser/Lexer.x
+++ b/compiler/GHC/Parser/Lexer.x
@@ -89,6 +89,7 @@ import Data.Char
import Data.List (stripPrefix, isInfixOf, partition)
import Data.Maybe
import Data.Word
+import Debug.Trace (trace)
import GHC.Data.EnumSet as EnumSet