[GHC] #875: assert fails on HEAD

[GHC]

#875: assert fails on HEAD
--------------------------+-------------------------------------------------
  Reporter:  guest        |          Owner:         
      Type:  bug          |         Status:  new    
  Priority:  high         |      Milestone:  6.6    
 Component:  Compiler     |        Version:  6.5    
  Severity:  normal       |     Resolution:         
  Keywords:               |             Os:  Unknown
Difficulty:  Easy (1 hr)  |   Architecture:  Unknown
--------------------------+-------------------------------------------------
Changes (by simonmar):

  * milestone:  => 6.6
  * priority:  normal => high

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/875>
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