On 2004-10-29 at 00:45+0200 Andrej Bauer wrote:
Hi,
I am new to haskell, but otherwise experienced in programming languages. My first attempt at Haskell was this (on a Linux Debian) session with hugs:
Type :? for help Prelude> :version -- Hugs Version November 2003 Prelude> let p = 1 : [2 * x | x <- p, x < 1] in p [1Segmentation fault
Is it the norm for hugs to dump core like this? Or was I just very lucky to discover a bug?
UNlucky. There's a bug in your programme in that it goes into an infinite loop consuming something (stack probably), and it happens that hugs doesn't correctly check for its exhaustion. (I'd call that a bug too) In ghci you get: [1*** Exception: <<loop>> which is better. -- Jón Fairbairn Jon.Fairbairn@cl.cam.ac.uk