atMost in GHC.Event.PSQ causes seqfault or bus error

Ian Lynagh ian at
Fri May 31 16:30:10 CEST 2013

Hi Kazu,

On Fri, May 31, 2013 at 03:16:22PM +0900, Kazu Yamamoto wrote:
> After a long fight, I found that this is a bug of the "-O2" option of
> GHC head on 32bit machine. Now, it is easy to reproduce this
> segfault. Please read and try this:

Great, thanks for your work in boiling this down! I've filed a ticket
for it here:

Ian Lynagh, Haskell Consultant
Well-Typed LLP,

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