[GHC] #15544: Possible segmentation fault in cryptohash-sha256 testsuite

[GHC]

#15544: Possible segmentation fault in cryptohash-sha256 testsuite
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
-------------------------------------+-------------------------------------
 {{{
 $ cabal get cryptohash-sha256-0.11.101.0
 $ cabal new-run -w ghc-8.6.1 --enable-test --allow-newer=cryptohash-
 sha256:base,*:stm,*:tasty,async:base test:test-sha256 -- -j 8
 --quickcheck-tests 9999
 }}}

 Eventually the program will start spamming stderr with `test-sha256: lost
 signal due to full pipe: 11` repeatedly.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15544>
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