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{-# LANGUAGE BangPatterns #-}
module Lib where
data T1 a = T1 a
newtype T2 a = T2 a
f :: T1 a -> Bool -> ()
f _ True = ()
f (T1 _) True = ()
f _ _ = ()
g :: T2 a -> Bool -> ()
g _ True = ()
g (T2 _) True = () -- redundant
g !_ True = () -- inaccessible
g _ _ = ()
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