[GHC] #7961: Remove restrictions on promoting GADT's

[GHC]

#7961: Remove restrictions on promoting GADT's
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Reporter:  danharaj          |          Owner:                  
    Type:  feature request   |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.6.3             |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:  #6204           
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Comment(by danharaj):

 Woops. That should be #6024. I will post a nice code example when I can.
 It is a bit late here at the moment.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7961#comment:2>
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