[GHC] #1200: ghci scripts ending in printf lines fail with Exception: Prelude.undefined

[GHC]

#1200: ghci scripts ending in printf lines fail with Exception: Prelude.undefined
----------------------------+-----------------------------------------------
 Reporter:  dons            |          Owner:  igloo  
     Type:  merge           |         Status:  new    
 Priority:  normal          |      Milestone:  6.6.1  
Component:  libraries/base  |        Version:  6.6    
 Severity:  normal          |     Resolution:         
 Keywords:                  |     Difficulty:  Unknown
 Testcase:                  |   Architecture:  Unknown
       Os:  Unknown         |  
----------------------------+-----------------------------------------------
Changes (by simonmar):

  * milestone:  6.8 => 6.6.1
  * owner:  => igloo
  * type:  bug => merge

Comment:

 I think the right way to fix this is to make runghc evaluate `(main >>
 return ())` instead of just `main`, which is what I just did:

 {{{
 Tue Mar 13 14:46:14 GMT 2007  Simon Marlow <simonmar at microsoft.com>
   * fix #1200: don't evaluate the result of main
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1200>
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