[GHC] #11217: Empty GADT-style declaration accepted without extensions

14 Dec 2015

      #11217: Empty GADT-style declaration accepted without extensions
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           Reporter:  goldfire       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  7.11
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 The following module compiles without complaint:

 {{{#!hs
 module Bug where

 data Foo where
 }}}

 It should require `-XGADTSyntax`.

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Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11217
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