[GHC] #15238: T13838 fails in ghci way

[GHC]

#15238: T13838 fails in ghci way
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           Reporter:  bgamari        |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.4.3
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 {{{
 Wrong exit code for T13838(ghci) (expected 1 , actual 0 )
 Stderr ( T13838 ):
 T13838:6:30: error:
     • Couldn't match expected type ‘IO a0’ with actual type ‘() -> ()’
     • Probable cause: ‘main’ is applied to too few arguments
       In the first argument of ‘GHC.TopHandler.runIOFastExit’, namely
         ‘main’
       In the first argument of ‘(>>)’, namely
         ‘GHC.TopHandler.runIOFastExit main’
       In the expression: GHC.TopHandler.runIOFastExit main >> return ()
 *** unexpected failure for T13838(ghci)
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15238>
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