Re: [Haskell-cafe] Bug in writeArray?

2009-09-24 Thread Grzegorz Chrupała
2009/9/23 Bulat Ziganshin bulat.zigans...@gmail.com: Hello Grzegorz, Wednesday, September 23, 2009, 7:19:59 PM, you wrote: This seems like a bug in the implementation of writeArray: when passed   let (l,u) = ((0,10),(20,20)) writeArray computes raw index (from 0 to total number of array

Re: [Haskell-cafe] Bug in writeArray?

2009-09-24 Thread Iavor Diatchki
I agree with Grzegorz. Perhaps we should file a bug-report, if there isn't one already? -Iavor 2009/9/24 Grzegorz Chrupała pite...@gmail.com: 2009/9/23 Bulat Ziganshin bulat.zigans...@gmail.com: Hello Grzegorz, Wednesday, September 23, 2009, 7:19:59 PM, you wrote: This seems like a bug in

Re: [Haskell-cafe] Bug in writeArray?

2009-09-24 Thread David Menendez
2009/9/24 Iavor Diatchki iavor.diatc...@gmail.com: I agree with Grzegorz.  Perhaps we should file a bug-report, if there isn't one already? http://hackage.haskell.org/trac/ghc/ticket/2120 Apparently, it's fixed in GHC 6.12. -- Dave Menendez d...@zednenem.com http://www.eyrie.org/~zednenem/

Re: [Haskell-cafe] Bug in writeArray?

2009-09-24 Thread Duncan Coutts
On Thu, 2009-09-24 at 13:53 +0200, Grzegorz Chrupała wrote: 2009/9/23 Bulat Ziganshin bulat.zigans...@gmail.com: Hello Grzegorz, Wednesday, September 23, 2009, 7:19:59 PM, you wrote: This seems like a bug in the implementation of writeArray: when passed let (l,u) = ((0,10),(20,20))

[Haskell-cafe] Bug in writeArray?

2009-09-23 Thread Grzegorz Chrupała
Hi all, This seems like a bug in the implementation of writeArray: when passed an out-of-range index it silently writes to an incorrect index in the array. -- import Data.Array.IO import Data.Array.Unboxed main = do let (l,u) = ((0,10),(20,20)) marr - newArray (l,u) 0 :: IO (IOUArray

Re: [Haskell-cafe] Bug in writeArray?

2009-09-23 Thread Bulat Ziganshin
Hello Grzegorz, Wednesday, September 23, 2009, 7:19:59 PM, you wrote: This seems like a bug in the implementation of writeArray: when passed let (l,u) = ((0,10),(20,20)) writeArray computes raw index (from 0 to total number of array elements) and check that this index is correct. with