Re: [Haskell-cafe] Iteratee, ghc 6.12/7.0 strange behaviour - epollControl: permission denied (Operation not permitted)

Message: 15 Date: Mon, 28 Mar 2011 21:31:39 +0400 From: Michael A Baikov Subject: [Haskell-cafe] Iteratee, ghc 6.12/7.0 strange behaviour - epollControl: permission denied (Operation not permitted) To: haskell-cafe@haskell.org Message-ID: Content-Type: text/plain; charset=koi8-r

I am still playing with lastest iteratee and i think i found something strange.

let's suppose we have a file test.hs like this:

import Data.Iteratee import Data.Iteratee.IO import Data.Iteratee.Char

main = fileDriver printLines "/etc/passwd"

It works fine when executed via runhaskell / ghci in ghc 6.12. Compiled version in ghc 7 also works, but when i am trying to execute it via runhaskell / ghci i am getting this error:

iter.hs: epollControl: permission denied (Operation not permitted)

Any ideas?

Apologies, I won't have time to look at this for a few days. However, could you try a test using the functions from Data.Iteratee.IO.Posix directly? That would help narrow down the issue. I suspect it's either a bug in ghc's IO, or the semantics of some IO functions changed without my noticing. John L.