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{-# LANGUAGE ConstraintKinds, MagicHash #-}
module ShouldFail where
import GHC.Exts
-- If we turn on ConstraintKinds the typing rule for
-- tuple types is generalised. This test checks that
-- we get a reasonable error for unreasonable tuples.
f :: (Maybe, Either Int)
f = (Just 1, Left 1)
g :: (Int#, Int#)
g = (1#, 2#)
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