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-rw-r--r--compiler/utils/ListSetOps.lhs7
1 files changed, 4 insertions, 3 deletions
diff --git a/compiler/utils/ListSetOps.lhs b/compiler/utils/ListSetOps.lhs
index 83334fbb28..5cc53488da 100644
--- a/compiler/utils/ListSetOps.lhs
+++ b/compiler/utils/ListSetOps.lhs
@@ -25,6 +25,7 @@ import Outputable
import Unique
import UniqFM
import Util
+import DynFlags
import Data.List
\end{code}
@@ -43,10 +44,10 @@ insertList :: Eq a => a -> [a] -> [a]
insertList x xs | isIn "insert" x xs = xs
| otherwise = x : xs
-unionLists :: (Outputable a, Eq a) => [a] -> [a] -> [a]
+unionLists :: (Outputable a, Eq a) => DynFlags -> [a] -> [a] -> [a]
-- Assumes that the arguments contain no duplicates
-unionLists xs ys
- = WARN(length xs > 100 || length ys > 100, ppr xs $$ ppr ys)
+unionLists dflags xs ys
+ = WARN(dflags, length xs > 100 || length ys > 100, ppr xs $$ ppr ys)
[x | x <- xs, isn'tIn "unionLists" x ys] ++ ys
minusList :: (Eq a) => [a] -> [a] -> [a]