[GHC] #3875: DPH QuickHull example crashes on SPARC with -N > 1

[GHC]

#3875: DPH QuickHull example crashes on SPARC with -N > 1
-------------------------------+--------------------------------------------
    Reporter:  benl            |        Owner:  benl         
        Type:  bug             |       Status:  assigned     
    Priority:  high            |    Milestone:  6.12.2       
   Component:  Runtime System  |      Version:  6.13         
    Keywords:                  |   Difficulty:               
          Os:  Solaris         |     Testcase:               
Architecture:  sparc           |      Failure:  Runtime crash
-------------------------------+--------------------------------------------
Changes (by simonmar):

  * priority:  normal => high
  * component:  Compiler => Runtime System
  * milestone:  => 6.12.2


Comment:

 Is this only on Sparc?  I wonder if there is a missing `write_barrier()`
 somewhere.

 This is likely to be a tricky one - `eval_thunk_selector` is a notorious
 bug farm.  I thought I'd got them all, but evidently not.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3875#comment:3>
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