[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:  new          
    Priority:  high            |    Milestone:  7.0.2        
   Component:  Profiling       |      Version:  7.0.1        
    Keywords:                  |     Testcase:               
   Blockedby:                  |   Difficulty:               
          Os:  Linux           |     Blocking:               
Architecture:  x86_64 (amd64)  |      Failure:  Runtime crash
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Changes (by simonmar):

  * priority:  normal => high
  * milestone:  => 7.0.2


Comment:

 (The submitter told me this is a blocker for them, so we should prioritise
 looking into it for 7.0.2)

 We will need to be able to reproduce it in order to look into it though.
 If you can find a recipe to reproduce it outside of your test server that
 would be most useful.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4820#comment:1>
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