Re: [Haskell-cafe] Arithmetic overflow

On Jan 24, 2014, at 8:42 AM, Levent Erkok wrote:

On Thu, Jan 23, 2014 at 10:33 PM, Rob Leslie wrote:

...

λ> (minBound :: Int) `quot` (-1) *** Exception: arithmetic overflow

Is this a bug?

I think this is a bug. It also seems to impact explicitly sized types:

Prelude Data.Int> (minBound::Int8) `quot` (-1) *** Exception: arithmetic overflow Prelude Data.Int> (minBound::Int16) `quot` (-1) *** Exception: arithmetic overflow

You should definitely report it. I think there’s a pending release of GHC, so they might be able to fix it shortly.

Thanks for the feedback; I went ahead and created a ticket: https://ghc.haskell.org/trac/ghc/ticket/8695 Cheers, -- Rob Leslie rob@mars.org