Template Haskell declaration quote reports error with GADT syntax

Consider the following code:

{-# LANGUAGE GADTSyntax, TemplateHaskell, KindSignatures #-}

data Foo :: * -> * where
  Foo :: Foo a

$( [d|
  data Bar :: * -> * where
    Bar :: Bar a
 |] )

The type Foo compiles just fine. The type Bar does not.

Trac metadata

Trac field	Value
Version	7.4.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Template Haskell
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