November 2000 - Hugs-Bugs

Hugs98 under Redhat 7.0
by david.landell＠spray.se 10 Nov '00

10 Nov '00

Dear sirs, I can't get hugs98 to work under my linuxplatform. I have the Red Hat distirbution 7.0. The problem is that hugs requires a file called "readline.so.3" and I have "readline.so.4" on my system. Is there a way to come around this problem?? Best regards, David Landell

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Internal Type Error
by Leon Smith 10 Nov '00

10 Nov '00

I'm using some Multi-parameter Type Classes with the November 1999 version of Hugs98 on Windows command-line version and getting the following internal type error: WinHugs simply chokes and dies. At one point, the hugs command-line version was accepting the code if I commented out the function definitions but left the constant data definition, but after restarting hugs, it seems to always get a internal type-check error. __ __ __ __ ____ ___ _________________________________________ || || || || || || ||__ Hugs 98: Based on the Haskell 98 standard ||___|| ||__|| ||__|| __|| Copyright (c) 1994-1999 ||---|| ___|| World Wide Web: http://haskell.org/hugs || || Report bugs to: hugs-bugs(a)haskell.org || || Version: November 1999 _________________________________________ Hugs mode: Restart with command line option +98 for Haskell 98 mode Reading file "C:\LANG\HUGS98\lib\Prelude.hs": Hugs session for: C:\LANG\HUGS98\lib\Prelude.hs Type :? for help Prelude> :l scripts/error.hs Reading file "scripts/error.hs": Type checking INTERNAL ERROR: findBtyvsInt Prelude> best, leon

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Re: Internal Type Error
by Leon Smith 10 Nov '00

10 Nov '00

I found a minor mistake in the example code, but the same problem remains. The "real" code is a 2-3-4 Tree which I'd like to use to implement a couple different things, such as Finite Maps and Sets. It works fine without type classes. best, leon

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Bug Report: Integer to Double conversion
by Marc van Dongen 01 Nov '00

01 Nov '00

Dear Maintainer(s), I don't know if this is a known bug. When converting Integers to floats I get the following: (fromInteger $ (2::Integer)^128)::Double Inf.0 Regards, Marc van Dongen -- Marc van Dongen, CS Dept | phone: +353 21 4903578 University College Cork, NUIC | Fax: +353 21 4903113 College Road, Cork, Ireland | Email: dongen(a)cs.ucc.ie

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