[GHC] #7646: resource busy (file is locked) with multi-threaded file ops

[GHC]

#7646: resource busy (file is locked) with multi-threaded file ops
----------------------------------------+-----------------------------------
Reporter:  StefanWehr                   |          Owner:                  
    Type:  bug                          |         Status:  new             
Priority:  normal                       |      Component:  Runtime System  
 Version:  7.6.2                        |       Keywords:                  
      Os:  Unknown/Multiple             |   Architecture:  Unknown/Multiple
 Failure:  Incorrect result at runtime  |      Blockedby:                  
Blocking:                               |        Related:                  
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Changes (by dleuschner):

  * version:  7.6.1 => 7.6.2


Comment:

 Thank you for looking into this issue, Carter!  I assume it might affect
 more users than we might think, because the error message is typically
 associated with the lazy-IO problem of first (incompletely) reading and
 then writing.

 For me it still doesn't work with appendFile.  The output still is:
 {{{
 $ ghc -threaded -rtsopts --make GhcBug.hs && ./GhcBug +RTS -N2
 started worker 3
 started worker 2
 started worker 5
 started worker 7
 started worker 9
 started worker 1
 started worker 4
 started worker 6
 started worker 8
 started worker 10
 GhcBug: ERROR in worker 1: 1: openBinaryFile: resource busy (file is
 locked)
 ERROR in worker 1: 1: openBinaryFile: resource busy (file is locked)
 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7646#comment:3>
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