Runtime error with RecordWildCards and a non-record constructor

The following program is accepted with no warning, and crashes at runtime with an error:

{-# LANGUAGE RecordWildCards #-}
newtype N = N Int deriving (Show)

main = print N{..}

% runghc wildcards.hs  
wildcards.hs: wildcards.hs:4:14-18: Missing field in record construction

I find this behavior surprising. Would it be better to either disallow it or have -fwarn-missing-fields warn it?

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