[GHC] #9380: ghc generates seemingly incorrect code

[GHC]

#9380: ghc generates seemingly incorrect code
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              Reporter:  qnikst      |            Owner:
                  Type:  bug         |           Status:  closed
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.8.3
            Resolution:  fixed       |         Keywords:
      Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple                   |       Difficulty:  Unknown
       Type of failure:  Incorrect   |       Blocked By:
  result at runtime                  |  Related Tickets:
             Test Case:  gadt/T9380  |
              Blocking:              |
Differential Revisions:              |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"dc7d3c2d437b310d26b05033d1b34601e1914d00/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="dc7d3c2d437b310d26b05033d1b34601e1914d00"
 Test Trac #9380
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9380#comment:8>
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