[GHC] #7257: Regression: pinned memory fragmentation

[GHC]

#7257: Regression: pinned memory fragmentation
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    Reporter:  jwlato            |       Owner:  simonmar               
        Type:  bug               |      Status:  new                    
    Priority:  highest           |   Milestone:  7.6.2                  
   Component:  Compiler          |     Version:  7.6.1                  
    Keywords:                    |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:  Unknown           |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
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Changes (by simonmar):

  * owner:  => simonmar
  * difficulty:  => Unknown
  * priority:  normal => highest
  * milestone:  => 7.6.2


Comment:

 Sorry about this.  I know what the problem is, and a fix is on the way.
 As a bonus, I have made the program go faster by a factor of 10.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7257#comment:3>
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