Hi there, thanks for the bug report. No, this wasn't a known one, WinHugs' evaluator thread didn't have an exception filter set up to catch the stack overflow. It does now, making the behaviour uniform across both versions of Hugs.
--sigbjorn ----- Original Message ----- From: "Jan Reineke" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, February 12, 2003 11:12 Subject: winhugs crashes on C stack overflow > Hi, > > I am new to Haskell and functional programming in general, but I think > that I have found a bug in Winhugs. > > When I call "wurzel 5" in the "dos-mode"-hugs after loading the attached > file I get "ERROR - C stack overflow", which is ok. Winhugs crashes in > the same situation. In my German Win2k version it says "winhugs.exe hat > Fehler verursacht und wird geschlossen. Starten Sie das Programm neu. > Ein Fehlerprotokoll wird erstellt." which means something like > "winhugs.exe has created an error and is going to be closed. Restart the > program." > > Is this a known issue? > > Regards, > Jan Reineke > ---------------------------------------------------------------------------- ---- > absolutevalue :: (Double -> Double) > absolutevalue x = if (x < 0) > then -x > else x > > newtoniteration :: (Double -> Double) -> (Double -> Double) -> Double -> Double > newtoniteration g gprime x = if (absolutevalue(g x/gprime x) < 0.01) > then x > else newtoniteration g gprime x-(g x/gprime x) > > wurzel a = newtoniteration (\x -> (x*x-a)) (\x -> x*x) 2 > > f a x = x*x-a > fprime x = x*x > wurzelalternative a = newtoniteration (f a) fprime 2 _______________________________________________ Hugs-Bugs mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/hugs-bugs
