- Hugs-Bugs - Haskell.org

[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

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[Hugs] #75: Please update FAQ to address whether a "no install" version of Hugs is available. Thx!
by Hugs 24 Jul '07

24 Jul '07

#75: Please update FAQ to address whether a "no install" version of Hugs is available. Thx! ----------------------------+----------------------------------------------- Reporter: guest | Owner: nobody Type: task | Status: new Priority: minor | Milestone: Component: hugs | Version: 200609 Keywords: faq no install | ----------------------------+----------------------------------------------- Would be nice if FAQ said yes/no on this issue. Thanks much. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/75> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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[Hugs] #76: Add pattern guards
by Hugs 27 Jun '07

27 Jun '07

#76: Add pattern guards -------------------------+-------------------------------------------------- Reporter: neil | Owner: nobody Type: enhancement | Status: new Priority: minor | Milestone: Component: hugs | Version: 200609 Keywords: | -------------------------+-------------------------------------------------- Yhc, nhc and GHC all support pattern guards. It would be lovely if Hugs did as well, since they are incredibly handy. The absence of pattern guards means that Hugs cannot compile the central StackSet module in XMonad, amongst other things. http://research.microsoft.com/Users/simonpj/Haskell/guards.html -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/76> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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Stack overflow on words (repeat 'a')
by Neil Mitchell 26 Jun '07

26 Jun '07

Hi With the expression: words (repeat 'a') Using WinHugs Sep 06 I get a stack overflow. Using Hugs Linux May 06 I get a GC fails to reclaim sufficient space error Using GHC and Yhc both of these succeed. I have a similar issue in one of my functions which is showing the same behaviour. Thanks Neil

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Build system corrupts LDFLAGS options
by Fatih Aşıcı 17 Jun '07

17 Jun '07

Hi, I am trying to compile hugs98 with LDFLAGS="-Wl,-Bdirect -Wl,-hashvals -Wl,-zdynsort" While compiling OpenGL stuff, somehow it changes LDFLAGS to -Wl -Bdirect -hashvals -zdynsort and causes the build process to fail with the following messages: i686-pc-linux-gnu-gcc: unrecognized option `-hashvals' i686-pc-linux-gnu-gcc: unrecognized option `-zdynsort' cc1: error: unrecognized command line option "-Wl" runhugs: Error occurred How can I build hugs98 with these flags? Thanks, Fatih

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[Hugs] #74: Data.Word64: arithmetic overflow when evaluating maxBound + 1
by Hugs 11 Jun '07

11 Jun '07

#74: Data.Word64: arithmetic overflow when evaluating maxBound + 1 ---------------------------------------------------+------------------------ Reporter: guest | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: hugs | Version: 200609 Keywords: Data.Word.Word64, arithmetic overflow | ---------------------------------------------------+------------------------ The function (fromInteger x) in Num(Data.Word.Word64) causes a program error, if x is greater or equal 2^64^. This is particularly annoying when two valid Word64 variables are to be multiplied. Take for instance {{{ Data.Word> maxbound :: Word64 18446744073709551615 Data.Word> 2*(2^63) :: Word64 Program error: arithmetic overflow Data.Word> (2^64) :: Word64 Program error: arithmetic overflow }}} GHC and GHCi return values mod 2^64^, as Hugs does also for Word32 and 2^32^. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/74> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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[Hugs] #73: Sieve of Eratosthenes crashes if using "Integer" while not if using "Int"
by Hugs 31 May '07

31 May '07

#73: Sieve of Eratosthenes crashes if using "Integer" while not if using "Int" --------------------+------------------------------------------------------- Reporter: guest | Owner: nobody Type: defect | Status: new Priority: minor | Milestone: Component: hugs | Version: 200609 Keywords: | --------------------+------------------------------------------------------- The following program crashes near the 5000th prime nr. sieveGH :: ([Integer], Integer) -> Integer sieveGH ([], y) = 0 sieveGH ((p:xs), 0) = p sieveGH ((p:xs), y) = sieveGH ([x| x <- xs, x `mod` p /= 0], y-1) While the following does not crash, and i was taught that Integer was designed for near infinite/large calculations(?) : sieveGH :: ([Int], Int) -> Int sieveGH ([], y) = 0 sieveGH ((p:xs), 0) = p sieveGH ((p:xs), y) = sieveGH ([x| x <- xs, x `mod` p /= 0], y-1) Main> sieveGH ([2..], 10000) 104743 (505275796 reductions, 696417680 cells, 787 garbage collections) -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/73> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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[Hugs] #72: mishandling of ambiguous record field names
by Hugs 29 May '07

29 May '07

#72: mishandling of ambiguous record field names -----------------------------+---------------------------------------------- Reporter: ross | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: static analysis | Version: current Keywords: | -----------------------------+---------------------------------------------- Simon PJ writes: {{{ module A where data A = A { foo :: Int } module B where import A data B = B { foo :: Bool } a = A {foo=3} }}} yields: {{{ ERROR "B.hs":8 - Constructor "A" does not have selected fields in A{foo += 3} }}} Commenting out the declaration of `data B` makes the definition of `a` work. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/72> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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RE: [Haskell] ambiguous record field names which actually aren’t ambigious
by Simon Peyton-Jones 29 May '07

29 May '07

[Redirecting to ghc-bugs] | module A where | data A = A { label :: Int } | | module B where | data B = B { label :: Int } | | b :: B | b = B { label = 0 } | | x :: B -> () | x B { label = 0 } = () | | GHC reports an ambiguity for both usages of label. Are you sure? Module B doesn't even import A! And if you mean that B does import A, then Haskell 98 indeed says it's ambiguous. Now, it's true that in the case of both a) pattern matching b) record construction there's a lot less ambiguity, because you know which *data constructor* is involved. (Even better than knowing which module is involved. But for c) record update (x { label = 0 }) d) field selection (label x) you have no such clues. Haskell could be defined to take advantage of (a) and (b), but if it was then it'd *also* work if data A and data B were defined in the same module, and Section 3.15 of the Haskell Report clearly states otherwise. I conclude that Hugs is not implementing Haskell 98 here. In fact there's clearly a bug in Hugs: module A where data A = A { foo :: Int } module B where import A data B = B { foo :: Bool } a = A {foo=3} yields: ERROR "B.hs":8 - Constructor "A" does not have selected fields in A{foo = 3} Commenting out the declaration of data B makes the definition of 'a' work. I'm ccing hugs-bugs. Simon

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[Hugs] #71: U SB
by Hugs 23 May '07

23 May '07

#71: U SB --------------------+------------------------------------------------------- Reporter: cdseo | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: hugs | Version: 200609 Keywords: | --------------------+------------------------------------------------------- [http://www.citsgo.com/ 九寨沟] [http://www.citsgo.com/jiuzhaigou/ 九寨沟旅游] [http://www.citsgo.com/xizang/index.htm 西藏旅游] [http://www.citsgo.com/daocheng/index.htm 稻城旅游] [http://www.citsgo.com/page/chengdu/ 成都旅游] [http://www.citsgo.com/siguniangshan/ 四姑娘山旅游] [http://www.citsgo.com/emei/ 峨眉山旅游] [http://www.citsgo.com/miyaluo/ 米亚罗旅游] [http://www.citsgo.com/xilinxueshan/ 西岭雪山旅游] [http://www.citsgo.com/changjiang/ 长江三峡旅游] [http://www.citsgo.com/ 四川旅游] [http://www.citsgo.com/huiyi.htm 商务会议] [http://www.citsgo.com/huiyi.htm 四川会议旅游] [http://www.citsgo.com/car.htm 成都租车] [http://www.citsgo.com/hotel/ 酒店预定] [http://www.citsgo.com/hotel/xizang/ 西藏酒店预定] [http://www.citsgo.com/hotel/cd/ 成都酒店预定] [http://www.yatrip.com 四川旅游] [http://www.yatrip.com/hotel/hotel.aspx 酒店预订] [http://www.yatrip.com/flight/flight.aspx 机票预订] [http://www.yatrip.com/golf/golf.aspx 高尔夫] [http://www.yatrip.com/drive/drive.aspx 自驾车] [http://www.yatrip.com/conference/2_6.aspx?cid=2 会议旅游] [http://www.yatrip.com/conference/2_2.aspx?cid=1 会议接待] [http://www.yatrip.com/conference/conference_01.aspx 商务会议] [http://www.yatrip.com/conference/conference_01.aspx 四川会议] [http://www.yatrip.com/conference/conference_01.aspx 四川会议旅游] [http://www.yatrip.com/chengdu.html 成都旅游] [http://www.yatrip.com/danba.html 丹巴旅游] [http://www.yatrip.com/daocheng.html 稻城] [http://www.yatrip.com/daochengtravel.html 稻城旅游] [http://www.yatrip.com/daochengyading.html 稻城亚丁] [http://www.yatrip.com/emeishan.html 峨眉山] [http://www.yatrip.com/emeishantravel.html 峨眉山旅游] [http://www.yatrip.com/hailuogou.html 海螺沟] [http://www.yatrip.com/huanglong.html 黄龙] [http://www.yatrip.com/jiuzhaigou.html 九寨沟] [http://www.yatrip.com/jiuzhaigoutravel.html 九寨沟旅游] [http://www.yatrip.com/leshangiantbuddha.html 乐山大佛] [http://www.yatrip.com/lijiang.html 丽江] [http://www.yatrip.com/miyaluo.html 米亚罗] [http://www.yatrip.com/shangrila.html 香格里拉] [http://www.yatrip.com/siguniangshan.html 四姑娘山] [http://www.yatrip.com/tibet.html 西藏旅游] [http://www.yatrip.com/yangtzeriver.html 长江三峡] -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/71> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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