[GHC] #12906: GHC fails to typecheck Main module without main

[GHC]

#12906: GHC fails to typecheck Main module without main
-------------------------------------+-------------------------------------
        Reporter:  dfeuer            |                Owner:  RolandSenn
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:  make test
                                     |  TEST=T12906
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D5338
       Wiki Page:                    |
-------------------------------------+-------------------------------------
Changes (by RolandSenn):

 * status:  new => patch
 * testcase:   => make test TEST=T12906
 * differential:   => Phab:D5338


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12906#comment:6>
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