[GHC] #7363: runghc leaks space in IO

[GHC]

#7363: runghc leaks space in IO
-------------------------------------+--------------------------------------
 Reporter:  Jafet                    |          Owner:                
     Type:  bug                      |         Status:  new           
 Priority:  normal                   |      Component:  None          
  Version:  7.6.1                    |       Keywords:                
       Os:  Unknown/Multiple         |   Architecture:  x86_64 (amd64)
  Failure:  Runtime performance bug  |       Testcase:                
Blockedby:                           |       Blocking:                
  Related:                           |  
-------------------------------------+--------------------------------------
 runghc mysteriously uses memory to perform IO.

 {{{
 main = forever $ return ()
 main = sequence_ $ repeat $ return ()
 main = mapM_ print [0..]
 -- et al.
 }}}

 I have encountered this bug with 7.4.2 on Windows and linux, and 7.6.1 on
 linux.

 This only seems to happen with runghc, not with ghci or ghc -e.

 I don't know what Component contains runghc, so I have left it blank for
 now.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7363>
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