[Haskell] [Fwd: Bug in Data.IntSet?]

[Ketil Malde]

Sigh.  My system insists on rewriting outgoing mail headers, and 
ghc-users refuses non-subscribers to post there.  I'm too tired to fight 
this at the moment, so I'll send it here in the hope that it will be 
picked up by the right adressee.

-k

-------- Original Message --------
Subject: 	Bug in Data.IntSet?
Date: 	Thu, 27 Oct 2005 15:25:30 +0200
From: 	Ketil Malde <ketil at ii.uib.no>
To: 	glasgow-haskell-users <glasgow-haskell-users at haskell.org>



AFAICT, there is a bug in Data.IntSet.split

Here's an excerpt from GHCi:

*Main> let m=482 in Data.IntSet.split (16*m) $ Data.IntSet.fromList (List.map (m*) [17,18,19,30,40])

({8194,8676,9158},{14460,19280})

*Main> let m=481 in Data.IntSet.split (16*m) $ Data.IntSet.fromList (List.map (m*) [17,18,19,30,40])

({},{8177,8658,9139,14430,19240})

*Main> let m=481 in Data.Set.split (16*m) $ Data.Set.fromList (List.map (m*) [17,18,19,30,40])

({},{8177,8658,9139,14430,19240})

*Main> let m=482 in Data.Set.split (16*m) $ Data.Set.fromList (List.map (m*) [17,18,19,30,40])

({},{8194,8676,9158,14460,19280})

*Main> let m=482 in Data.Set.split (16*m) $ Data.Set.fromList (List.map (m*) [17,18,19,30,40]::[Int])

({},{8194,8676,9158,14460,19280})

% ghci --version

The Glorious Glasgow Haskell Compilation System, version 6.4.1


-k