[GHC] #8028: Panic on degenerate closed type family

[GHC]

#8028: Panic on degenerate closed type family
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    Reporter:  monoidal                 |       Owner:  goldfire                         
        Type:  bug                      |      Status:  new                              
    Priority:  normal                   |   Milestone:                                   
   Component:  Compiler (Type checker)  |     Version:  7.7                              
    Keywords:                           |          Os:  Unknown/Multiple                 
Architecture:  Unknown/Multiple         |     Failure:  Incorrect warning at compile-time
  Difficulty:  Unknown                  |    Testcase:                                   
   Blockedby:                           |    Blocking:                                   
     Related:                           |  
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Comment(by eir@…):

 commit 67aacde3c9ec04b6e8e8e1d921001b218eb5244f
 {{{
 Author: Richard Eisenberg <eir at cis.upenn.edu>
 Date:   Tue Jul 2 21:07:07 2013 +0100

     Fix Trac #8028.

     Check for an empty list of equations when converting
     a closed type family from TH to an HsDecl.

  compiler/hsSyn/Convert.lhs |    3 +++
  1 files changed, 3 insertions(+), 0 deletions(-)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/8028#comment:2>
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