[GHC] #3808: piping binary files sometimes fail

[GHC]

#3808: piping  binary files sometimes fail
-------------------------------+--------------------------------------------
    Reporter:  paolino         |       Owner:                
        Type:  bug             |      Status:  new           
    Priority:  normal          |   Component:  Compiler      
     Version:  6.12.1          |    Keywords:  pipe binary IO
          Os:  Linux           |    Testcase:                
Architecture:  x86_64 (amd64)  |     Failure:  None/Unknown  
-------------------------------+--------------------------------------------
 I'm having this random bug , sometimes code succeed, sometimes not.
 It must be noted that I had to choose 5000 to exploit the randomness of it
 With 10000 it always fail, with 100 it always succeed.
 Also substituting "take 5000 fibs" with [0..5000] it always succeed,
 probably because it's much faster.


 This is the console output, for 2 consecutive shots. Notice that faster
 machines, or different kernels could need a different 5000, or never show
 the bug.


 paolino at paolino-desktop:~$ ./prod | cat |./cons
 5000
 paolino at paolino-desktop:~$ ./prod | cat |./cons
 cons: <stdin>: hLookAhead: invalid argument (Invalid or incomplete
 multibyte or wide character)

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3808>
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