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{-# LANGUAGE Arrows #-}
{-# OPTIONS -fno-warn-redundant-constraints #-}
-- Test for Trac #1662
module Arrow where
import Control.Arrow
expr' :: Arrow a => a Int Int
expr' = error "urk"
term :: Arrow a => a () Int
term = error "urk"
expr1 :: Arrow a => a () Int
expr1 = proc () -> do
x <- term -< ()
expr' -< x
expr2 :: Arrow a => a () Int
expr2 = proc y -> do
x <- term -< y
expr' -< x
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