[GHC] #15087: Internal Error with Bibliography Profiling

[GHC]

#15087: Internal Error with Bibliography Profiling
-------------------------------------+-------------------------------------
           Reporter:  crockeea       |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.2
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Runtime crash
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 When running my large program with `+RTS -hb`, I get the following error:
 {{{
 internal error: Invalid object in processHeapClosureForDead(): 7
     (GHC version 8.4.2 for x86_64_unknown_linux)
 }}}

 Unfortunately, I'm unable to find a minimal example.

 (Side note: I doubt this is relevant, but this is a multi-threaded
 program. I first tried to profile with `+RTS -N4 -hb`, but got `-hb cannot
 be used with multiple capabilities`. I assumed this means it doesn't like
 `-N4` with `-hb`, so I removed `-N4` and got the above error.)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15087>
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