[GHC] #8089: Implementation of GHC.Event.Poll.poll is broken due to bad coercion

[GHC]

#8089: Implementation of GHC.Event.Poll.poll is broken due to bad coercion
-------------------------------------+-------------------------------------
        Reporter:  merijn            |                Owner:  (none)
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  7.10.1
       Component:  libraries/base    |              Version:  7.6.3
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Runtime crash     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D407
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by alpmestan):

 * cc: alpmestan (added)


Comment:

 The T8089 test case fails for those 3 ways:

 {{{
   /tmp/ghctest-n4fi8zlk/test   spaces/../../libraries/base/tests/T8089.run
 T8089 [bad exit code] (ghci)
   /tmp/ghctest-n4fi8zlk/test   spaces/../../libraries/base/tests/T8089.run
 T8089 [bad exit code] (threaded1)
   /tmp/ghctest-n4fi8zlk/test   spaces/../../libraries/base/tests/T8089.run
 T8089 [bad exit code] (threaded2)
 }}}

 I'll mark those tests as expected broken for those 3 ways for now, is the
 above a manifestation of an actual, "serious" problem? Or simply a timeout
 program quirk? Depending on the answer, I might create a new ticket (as
 the problem doesn't seem immediately related to this ticket).

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8089#comment:14>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler