On Wed, 2009-01-28 at 16:56 +0100, Juraj Hercek wrote:
Hello people,
I've recently tried this:
$ uname -smpr Linux 2.6.28-ARCH x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz $ ghci GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer ... linking ... done. Loading package base ... linking ... done. Prelude> a <- readFile "/sys/devices/system/cpu/online" Prelude> length a `seq` a "^CInterrupted.
http://hackage.haskell.org/trac/ghc/ticket/2971 Files in /proc and /sys are not select()able which messes up ghc's IO system. It's not entirely clear what changed between 6.8 and 6.10 that means we hit this now. (I'd have expected it never to have worked given that ghc has always used non-blocking IO.) Duncan