March 2007 - Hugs-Bugs

[Hugs] #54: INTERNAL ERROR: build
by Hugs 24 Jul '07

24 Jul '07

#54: INTERNAL ERROR: build --------------------------+------------------------------------------------- Reporter: guest | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: build system | Version: current Keywords: | --------------------------+------------------------------------------------- Main> fvsp 450 INTERNAL ERROR: build Please report this Hugs bug to http://hackage.haskell.org/trac/hugs //code pots :: Num a => a -> [a] pots x = scanl (*) 1 (repeat x) factoriales :: [Integer] factoriales = scanl (*) 1 [1..] fvsp :: Integer -> Int fvsp n = length (takeWhile not (zipWith (<) (pots n) factoriales)) -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/54> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 2

[Hugs] #57: Display "Files loaded do not match those on disk" message if this is true
by Hugs 04 May '07

04 May '07

#57: Display "Files loaded do not match those on disk" message if this is true -------------------------+-------------------------------------------------- Reporter: neil | Owner: neil Type: enhancement | Status: new Priority: minor | Milestone: Component: winhugs | Version: 200609 Keywords: | -------------------------+-------------------------------------------------- Display a warning that the files on disk have changed, if this is readily possible. Claus would like this. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/57> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 2

[Hugs] #56: Print the evaluation count in the status bar
by Hugs 04 May '07

04 May '07

#56: Print the evaluation count in the status bar ---------------------+------------------------------------------------------ Reporter: neil | Owner: neil Type: defect | Status: new Priority: minor | Milestone: Component: winhugs | Version: 200609 Keywords: | ---------------------+------------------------------------------------------ Always print the evaluation count in the status bar, its plenty of space and currently dead space otherwise. Also means we can have one less option. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/56> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 2

[Hugs] #55: Ctrl+E/L/R in WinHugs changes the text alignment
by Hugs 03 May '07

03 May '07

#55: Ctrl+E/L/R in WinHugs changes the text alignment ---------------------+------------------------------------------------------ Reporter: neil | Owner: neil Type: defect | Status: new Priority: minor | Milestone: Component: winhugs | Version: 200609 Keywords: | ---------------------+------------------------------------------------------ In WinHugs pressing Ctrl+E at the edit prompt will centre the text. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/55> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 1

[Hugs] #42: WinHugs uninstaller crashes
by Hugs 18 Apr '07

18 Apr '07

#42: WinHugs uninstaller crashes ------------------------+--------------------------------------------------- Reporter: briansmith | Owner: neil Type: defect | Status: new Priority: major | Milestone: Component: winhugs | Version: 200609 Keywords: | ------------------------+--------------------------------------------------- I will attach a screenshot of the error. The error is: {{{ 16 bit MS-DOS Subsystem C:\PROGRA~1\WINHUG~1\UNINST~1.EXE The NTVDM CPU has encountered an illegal instruction. }}} I am using Windows XP SP2 using NTFS. My "Program Files" directory has very strict ACL permissions (only Administrators can modify anything). It seems strange that the uninstaller is a 16-bit console application. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/42> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 5

[Hugs] #62: Unable to uninstall
by Hugs 18 Apr '07

18 Apr '07

#62: Unable to uninstall ---------------------+------------------------------------------------------ Reporter: adam | Owner: neil Type: defect | Status: new Priority: major | Milestone: Component: winhugs | Version: 200609 Keywords: | ---------------------+------------------------------------------------------ I've seen this error a couple of times but still have not seen a solution. I am trying to uninstall winhugs but get this error: The NTVDM CPU has encountered an illegal instruction. CS:0dc6 IP:0130 OP:63 6f 6e 74 65 Any ideas on how I can go about uninstalling winhugs? -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/62> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 3

[Hugs] #59: missing and/or erroneous output in deteministic function run from WinHUGS cmd line!
by Hugs 16 Apr '07

16 Apr '07

#59: missing and/or erroneous output in deteministic function run from WinHUGS cmd line! ------------------------------------------------+--------------------------- Reporter: ettinger(a)elmgate.eclipse.co.uk | Owner: neil Type: defect | Status: new Priority: critical | Milestone: Component: winhugs | Version: 200609 Keywords: inconsistent expression evaluation | ------------------------------------------------+--------------------------- --(Output showing the bug is appended below. It isn't part of the program). --PLEASE run the function called bug. It will tell you to type a --short expression at the WinHUGS command line. --Retry the expression ten times. I do not get the same result every time! --Do you find the same problem? Please, please let me know either way. --See below for printout of my "impossible" results. --The functions os and s below will be used to demonstrate the WinHUGS bug: os :: Int -> Int -> Double os i j = -22.0/7.1 s :: [[Int]] -> [[Double]] s dat = [[ sum [ fromIntegral (dat!!i!!j) * os i x * os j y | i <-[0..7] , j <-[0..7] ] | x <- [0..7] ] | y <- [0..7] ] -- The following functions produce the bug test data: insig :: [Int] insig = [0 | i <-[0..7]] signif :: [Int] signif = [ 1 ] ++ [0 | i <-[1..7]] i = [insig] ++ [signif | i <- [1..7]] --For instructions on demonstrating the bug, please run the function below: bug = "Please type the following to demonstrate the bug: (take 4.s)i " Main> (take 4.s)i [[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703],[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703],[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703],[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703]] Main> (take 4.s)i [[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703],[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703],[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703],[67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703,67.2088871255703]] Main> -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/59> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 4

[Hugs] #45: parseInput internal error
by Hugs 06 Apr '07

06 Apr '07

#45: parseInput internal error ---------------------+------------------------------------------------------ Reporter: neil | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: parsing | Version: 200609 Keywords: | ---------------------+------------------------------------------------------ The following line in a file Main.hs: f = 1 where g (Just On :load Main.hs gives: INTERNAL ERROR: parseInput Please report this Hugs bug to mailto:hugs-bugs@haskell.org with: WinHugs May 2006 & Sep 2006 -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/45> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 1

[Hugs] #44: Hugs does not provide version numbers for installed packages
by Hugs 06 Apr '07

06 Apr '07

#44: Hugs does not provide version numbers for installed packages -------------------------+-------------------------------------------------- Reporter: briansmith | Owner: nobody Type: enhancement | Status: new Priority: major | Milestone: Component: hugs | Version: 200609 Keywords: | -------------------------+-------------------------------------------------- After installing WinHugs, we can inspect the "packages" subdirectory to see what packages are installed. But, there is no way to tell what version of each package is installed. I know that Hugs does not provide a versioning mechanism for packages like GHC does, but it would be very helpful it it at least included a "version" file in each directory that contained the version number from the Cabal file. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/44> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 4

[Hugs] #28: Cannot make existential type instance of class with fundep
by Hugs 06 Apr '07

06 Apr '07

#28: Cannot make existential type instance of class with fundep -------------------------+-------------------------------------------------- Reporter: guest | Owner: nobody Type: defect | Status: new Priority: minor | Milestone: Component: type system | Version: 200605 Keywords: | -------------------------+-------------------------------------------------- There seems to be a problem when combining !FunDeps and Existential Types. The code below (works on ghci) causes an error: - ''ERROR "Existential.hs":8 - Existentially quantified variable escapes from pattern !FooObj a''. {{{ class Foo a b | a -> b where foo :: a -> (String,b) data FooA = A instance Foo FooA String where foo _ = ("tyA","A-specific") data FooObj = forall a b. Foo a b => FooObj a instance Foo FooObj () where foo (FooObj a) = (fst (foo a),()) -- !!! }}} best regards, benedikt -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/28> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

1 1