[GHC] #13721: posix004 test succeeds but then I get an Apple problem report window that says: "posix004 quit unexpectedly"

[GHC]

#13721: posix004 test succeeds but then I get an Apple problem report window that
says: "posix004 quit unexpectedly"
-------------------------------------+-------------------------------------
           Reporter:  George         |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Runtime        |           Version:  8.2.1-rc2
  System                             |
           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:
-------------------------------------+-------------------------------------
 make TEST=posix004
 {{{
 results in
 ...
 cd "../../libraries/unix/tests/libposix/posix004.run" && ./posix004

 SUMMARY for test run started at Thu May 18 18:21:52 2017 ADT
  0:00:03 spent to go through
        1 total tests, which gave rise to
       10 test cases, of which
        9 were skipped

        0 had missing libraries
        1 expected passes
        0 expected failures

        0 caused framework failures
        0 caused framework warnings
        0 unexpected passes
        0 unexpected failures
        0 unexpected stat failures
 }}}
 but then I get an Apple problem report window that says: "posix004 quit
 unexpectedly"

 Problem details and system configuration attached. This my be Mac specifc
 but leaving as unknown for now until we have more details

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13721>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler