[GHC] #8406: Invalid object in isRetainer() or Segfault

[GHC]

#8406: Invalid object in isRetainer() or Segfault
-------------------------------------+-------------------------------------
        Reporter:  crockeea          |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        Priority:  normal            |               Milestone:  7.10.2
       Component:  Runtime System    |                 Version:  7.8.3
      Resolution:                    |                Keywords:
Operating System:  Linux             |            Architecture:  x86_64
 Type of failure:  Runtime crash     |  (amd64)
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:
-------------------------------------+-------------------------------------
Changes (by thoughtpolice):

 * status:  new => infoneeded
 * milestone:  7.10.1 => 7.10.2


Comment:

 Can we still get a testcase if at all possible? As long as it has
 reproducible build instructions - without that, there's very little hope
 of us being able to do much here.

 FWIW, it looks unlikely this will make 7.10, so I'm moving out to a later
 milestone for a future bugfix release.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:12>
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