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

[GHC]

#8406: Invalid object in isRetainer() or Segfault
-----------------------------------+--------------------------------------
        Reporter:  crockeea        |                Owner:  (none)
            Type:  bug             |               Status:  closed
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  7.8.3
      Resolution:  fixed           |             Keywords:
Operating System:  Linux           |         Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash   |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
-----------------------------------+--------------------------------------

Comment (by RyanGlScott):

 crockeea, GHC 8.4.1 was the first release to incorporate the changes from
 Phab:D3967. Can you still reproduce the issue with that?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8406#comment:26>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler