[GHC] #4820: "Invalid object in isRetainer" when doing retainer profiling in GHC 7 branch

[GHC]

#4820: "Invalid object in isRetainer" when doing retainer profiling in GHC 7
branch
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  Reporter:  dleuschner     |          Owner:                
      Type:  bug            |         Status:  closed        
  Priority:  high           |      Milestone:  7.0.2         
 Component:  Profiling      |        Version:  7.0.1         
Resolution:  invalid        |       Keywords:                
  Testcase:                 |      Blockedby:                
Difficulty:                 |             Os:  Linux         
  Blocking:                 |   Architecture:  x86_64 (amd64)
   Failure:  Runtime crash  |  
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Comment(by simonmar):

 It's probably a bug in retainer profiling, which is one of the less well-
 understood and well-tested parts of the runtime system.  It's not entirely
 surprising to find bugs in there.  But do keep us posted if you manage to
 make it reproducible.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4820#comment:4>
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