posix004 test succeeds but then I get an Apple problem report window that says: "posix004 quit unexpectedly"

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

Trac metadata

Trac field	Value
Version	8.2.1-rc2
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Runtime System
Test case
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