piping with System.Process.createProcess

[Claude Heiland-Allen]

Bertram Felgenhauer wrote:
> Claude Heiland-Allen wrote:
>> Greetings,
>>
>> I think I found a bug in the process package.
>>
>> GNU/Linux Debian Lenny
>> ghc-6.8.2
>> process-1.0.1.1
> 
> Hmm, I can't reproduce it in ghc 6.8.3 or 6.10.1. IIRC, there were some
> changes with regards to pipes and broken pipe errors between 6.8.2 and
> 6.8.3, but details elude me.
> 
> Can you try a newer ghc?

http://hackage.haskell.org/trac/ghc/ticket/2233 mentions this:

""""
    - Don't use O_NONBLOCK for pipes, as it can confuse the process
      attached to the pipe (requires a fix to GHC.Handle in the base
      package).
""""

Thus I assume the issue is known, and will be fixed if it hasn't already 
been fixed (I haven't had time to check with newer GHC...).

Thanks,


Claude