[GHC] #5630: External Core needs love

[GHC]

#5630: External Core needs love
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              Reporter:  quux        |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:  7.10.1
             Component:  Compiler    |          Version:  7.2.1
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Compile-    |       Blocked By:
  time crash                         |  Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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Comment (by Fuuzetsu):

 While it was already moved up to 7.10, I'd like to mention that I just hit
 it in 7.8.3 so it has not gone away while noone was looking.

 Specifically I hit this with ‘sizes-2.3.1.1’ package.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5630#comment:11>
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