[GHC] #5028: stage3 build failing with core-lint error

[GHC]

#5028: stage3 build failing with core-lint error
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    Reporter:  simonmar          |        Owner:                     
        Type:  bug               |       Status:  new                
    Priority:  highest           |    Milestone:  7.2.1              
   Component:  Compiler          |      Version:  7.1                
    Keywords:                    |     Testcase:                     
   Blockedby:                    |   Difficulty:                     
          Os:  Unknown/Multiple  |     Blocking:                     
Architecture:  Unknown/Multiple  |      Failure:  Building GHC failed
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Comment(by igloo):

 {{{
 Mon Mar 21 04:00:09 PDT 2011  simonpj at microsoft.com
   * Fix Trac #5028: zap occ info when doing the binder swap

   This fixes the Lint error, but still risks leaving stupid
   let { x=y } bindings in the code.  But no time to fix that
   today.  (Leave the ticket open for that reason.)
 }}}

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5028#comment:8>
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