[GHC] #4515: ghc 7.0.1 panic: dsLet: unlifted

[GHC]

#4515: ghc 7.0.1 panic: dsLet: unlifted
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    Reporter:  dsf               |       Owner:              
        Type:  bug               |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  7.0.1             |    Keywords:              
    Testcase:                    |   Blockedby:              
          Os:  Unknown/Multiple  |    Blocking:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
---------------------------------+------------------------------------------
 The attached file causes a ghc panic when compiled with this command:

 ghc -package base -package bytestring -XHaskell98 Internal

 The compiler is RC2 plus darcs patches through November 12th.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4515>
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