[GHC] #15173: Tests are failing with segfaults under CircleCI

[GHC]

#15173: Tests are failing with segfaults under CircleCI
-------------------------------------+-------------------------------------
           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.2.2
           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:
-------------------------------------+-------------------------------------
 It seems something has regressed recently as `master` now fails to
 validate on CircleCI with some tests segfaulting. Namely,
 {{{
 T10508_api T6145 T8628 T8639_api T10052 T7478 parseTree comments listcomps
 literals T11430 dynCompileExpr parsed
 }}}
 all in the `normal` way.

 This may be due to the SRT rework.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15173>
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