[GHC] #7078: Panic using mixing list with parallel arrays incorrectly

[GHC]

#7078: Panic using mixing list with parallel arrays incorrectly
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    Reporter:  NeilJ     |       Owner:  chak              
        Type:  bug       |      Status:  new               
    Priority:  normal    |   Milestone:                    
   Component:  Compiler  |     Version:  7.4.1             
    Keywords:            |          Os:  Unknown/Multiple  
Architecture:  x86       |     Failure:  Compile-time crash
  Difficulty:  Unknown   |    Testcase:                    
   Blockedby:            |    Blocking:                    
     Related:            |  
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Description changed by igloo:

Old description:

> ghc: panic! (the 'impossible' happened)
>   (GHC version 7.4.1 for i386-unknown-linux):
>         DsMonad: uninitialised ds_parr_bi
>
> Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

New description:

 {{{
 ghc: panic! (the 'impossible' happened)
   (GHC version 7.4.1 for i386-unknown-linux):
         DsMonad: uninitialised ds_parr_bi

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7078#comment:4>
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