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{-# LANGUAGE TypeApplications, ScopedTypeVariables, AllowAmbiguousTypes #-}
module T11947 where
theFloatDigits :: forall a. RealFloat a => Int
-- The type is ambiguous
theFloatDigits = floatDigits (undefined @_ @a)
foo :: IO ()
foo = print (theFloatDigits @Double, theFloatDigits @Float)
-- But the applications are not
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