[GHC] #13633: testwsdeque failure on POWER8

[GHC]

#13633: testwsdeque failure on POWER8
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           Reporter:  trommler         |             Owner:  (none)
               Type:  bug              |            Status:  new
           Priority:  normal           |         Milestone:
          Component:  Runtime System   |           Version:  8.1
           Keywords:  SMP              |  Operating System:  Linux
       Architecture:  powerpc64        |   Type of failure:  Runtime crash
          Test Case:  rts/testwsdeque  |        Blocked By:
           Blocking:                   |   Related Tickets:
Differential Rev(s):                   |         Wiki Page:
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 On a POWER8 `testwsdeque` fails occasionally under load:

 {{{
 Wrong exit code for testwsdeque(threaded1)(expected 0 , actual 134 )
 Stderr ( testwsdeque ):
 internal error: FAIL: 277808608 3 13
     (GHC version 8.3.20170430 for powerpc64le_unknown_linux)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13633>
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