[GHC] #7161: hSetNewlineMode and hSetEncoding can be performed on closed and semi-closed handles

[GHC]

#7161: hSetNewlineMode and hSetEncoding can be performed on closed and semi-closed
handles
---------------------------------+------------------------------------------
    Reporter:  duncan            |       Owner:                  
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:  7.8.1           
   Component:  libraries/base    |     Version:  7.6.1-rc1       
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by igloo):

  * difficulty:  => Unknown
  * milestone:  => 7.8.1


Comment:

 Can you give us a way to reproduce the segfault please? I tried:
 {{{
 module Main (main) where

 import System.IO

 main :: IO ()
 main = do h <- openFile "tmp" WriteMode
           hPutStrLn h "Test"
           hClose h
           hSetEncoding h utf8
           hSetEncoding h utf32
           hSetEncoding h utf8
           print h
 }}}
 {{{
 $ ghc --make q
 $ ./q
 {handle: tmp}
 }}}
 but got no segfault.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7161#comment:1>
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