[GHC] #7931: Deriving Read of an empty datatype crashes

[GHC]

#7931: Deriving Read of an empty datatype crashes
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  Reporter:  monoidal                   |          Owner:                  
      Type:  bug                        |         Status:  closed          
  Priority:  normal                     |      Milestone:                  
 Component:  Compiler                   |        Version:  7.6.3           
Resolution:  fixed                      |       Keywords:                  
        Os:  Unknown/Multiple           |   Architecture:  Unknown/Multiple
   Failure:  None/Unknown               |     Difficulty:  Unknown         
  Testcase:  deriving/should_run/T7931  |      Blockedby:                  
  Blocking:                             |        Related:                  
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Comment(by monoidal):

 I left a comment at #7401. By the way: #7401 is about normal, non-
 standalone deriving; AFAIK standalone deriving for nullary types works
 fine.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7931#comment:10>
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