[GHC] #9314: Huge space leak of GHC API 7.8.x

[GHC]

#9314: Huge space leak of GHC API 7.8.x
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              Reporter:  kazu-       |             Owner:
  yamamoto                           |            Status:  new
                  Type:  bug         |         Milestone:  7.8.4
              Priority:  high        |           Version:  7.8.3
             Component:  GHC API     |          Keywords:
            Resolution:              |  Operating System:  Unknown/Multiple
Differential Revisions:              |   Type of failure:  Other
          Architecture:              |         Test Case:
  Unknown/Multiple                   |          Blocking:
            Difficulty:  Unknown     |
            Blocked By:              |
       Related Tickets:              |
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Comment (by kazu-yamamoto):

 In my case, this happens even with -O0.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9314#comment:6>
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