[GHC] #7502: Panic when using lists of type-literals

[GHC]

#7502: Panic when using lists of type-literals
-----------------------------+----------------------------------------------
Reporter:  diatchki          |          Owner:                  
    Type:  bug               |         Status:  new             
Priority:  normal            |      Component:  Compiler        
 Version:  7.7               |       Keywords:                  
      Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
 Failure:  None/Unknown      |      Blockedby:                  
Blocking:                    |        Related:                  
-----------------------------+----------------------------------------------
 The following program:
 {{{
 {-# LANGUAGE DataKinds #-}

 type S = [1,2]
 }}}
 Causes a panic:
 {{{
 ghc-stage2: panic! (the 'impossible' happened)
   (GHC version 7.7.20121129 for x86_64-unknown-linux):
         lookupVers2
 <<details unavailable>>
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7502>
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