[GHC] #7859: runghc should give an error when the path to ghc is invalid

[GHC]

#7859: runghc should give an error when the path to ghc is invalid
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Reporter:  monoidal                           |          Owner:                  
    Type:  bug                                |         Status:  patch           
Priority:  normal                             |      Component:  None            
 Version:  7.6.3                              |       Keywords:                  
      Os:  Unknown/Multiple                   |   Architecture:  Unknown/Multiple
 Failure:  Incorrect warning at compile-time  |      Blockedby:                  
Blocking:                                     |        Related:                  
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Changes (by monoidal):

  * status:  new => patch


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7859#comment:1>
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