[GHC] #7944: GHC goes into an apparently infinite loop at -O2

[GHC]

#7944: GHC goes into an apparently infinite loop at -O2
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              Reporter:  bos         |            Owner:
                  Type:  bug         |           Status:  new
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.9
            Resolution:              |         Keywords:
      Operating System:              |     Architecture:  x86_64 (amd64)
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Compile-    |       Blocked By:
  time crash                         |  Related Tickets:  #5550 #8852
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by MikolajKonarski):

 * version:  7.6.3 => 7.9
 * os:  MacOS X => Unknown/Multiple
 * related:  5550 => #5550 #8852


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7944#comment:6>
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