[GHC] #8706: Kind operators not parsed

[GHC]

#8706: Kind operators not parsed
-------------------------------------+-------------------------------------
       Reporter:  goldfire           |             Owner:
           Type:  bug                |            Status:  new
       Priority:  normal             |         Milestone:
      Component:  Compiler (Parser)  |           Version:  7.7
       Keywords:                     |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple   |   Type of failure:  None/Unknown
     Difficulty:  Unknown            |         Test Case:
     Blocked By:                     |          Blocking:
Related Tickets:                     |
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 Take the following module:

 {{{
 {-# LANGUAGE DataKinds, TypeOperators, TypeFamilies #-}

 data a + b = Inl a | Inr b

 type family Foo :: Bool + Bool
 }}}

 HEAD produces

 {{{
 /Users/rae/temp/Bug.hs:5:25: parse error on input ‛+’
 }}}

 It seems that type operators promoted to kinds are not parsed correctly.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8706>
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