[GHC] #917: -O introduces space leak

[GHC]

#917: -O introduces space leak
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    Reporter:  claus.reinke@…           |       Owner:                  
        Type:  bug                      |      Status:  new             
    Priority:  lowest                   |   Milestone:  _|_             
   Component:  Compiler                 |     Version:  6.5             
    Keywords:                           |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple         |     Failure:  None/Unknown    
  Difficulty:  Unknown                  |    Testcase:                  
   Blockedby:                           |    Blocking:                  
     Related:                           |  
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Comment(by judahj):

 One more example that I ran into this week: #5729.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/917#comment:11>
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