April 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

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[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

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[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

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[Hugs] #66: WinHugs should have a multi-line box for listing include paths
by Hugs 03 May '07

03 May '07

#66: WinHugs should have a multi-line box for listing include paths ---------------------+------------------------------------------------------ Reporter: neil | Owner: neil Type: defect | Status: new Priority: minor | Milestone: Component: winhugs | Version: 200609 Keywords: | ---------------------+------------------------------------------------------ Currently, with WinHugs you have to specify all include paths in a single box which you can't see the end of. This is bad from a user interface perspective, and very hard to use correctly. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/66> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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[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

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[Hugs] #65: depth cutoff reports the wrong constraint
by Hugs 20 Apr '07

20 Apr '07

#65: depth cutoff reports the wrong constraint -------------------------+-------------------------------------------------- Reporter: ross | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: type system | Version: 200609 Keywords: | -------------------------+-------------------------------------------------- Given the following: {{{ class C a where f :: a -> a instance (Eq a, C a) => C a test = f True }}} hugs -98 reports {{{ ERROR "Silly.hs" - *** The type checker has reached the cutoff limit while trying to *** determine whether: *** Eq Bool *** can be deduced from: *** () *** This may indicate that the problem is undecidable. However, *** you may still try to increase the cutoff limit using the -c *** option and then try again. (The current setting is -c40) }}} when in fact it is trying to solve `C Bool`. -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/65> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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Crashing Hugs for fun and profit
by Neil Mitchell 20 Apr '07

20 Apr '07

Hi I've attached 3 separate bugs in the Hugs compiler, they are all a bit perplexing, and all seem to ruffle similar areas. I suspect there is an underlying memory bug, such as overwriting areas of memory or something. * Silly fails to derive something that should be obvious, as sent in a previous mail to hugs-users@ * Nonterm generates: > hugs Nonterm.hs -98 ERROR "Nonterm.hs":56 - Unresolved top-level overloading *** Binding : test *** Outstanding context : (Play b, Typeable b, Play ((bad type) ((bad type) ((ba d type) ((bad type) (bad type)))) ((bad type) ((bad type) ((bad type) ((bad type ) ((bad type) ((bad type) ((bad type) (bad type)))) ((bad type) ((bad type) ((ba Running with WinHugs causes an immediate shutdown. * Segfault generates: > hugs Segfault.hs -98 Unexpected signal With WinHugs I get an immediate shutdown. Thanks Neil

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[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

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[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

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[Hugs] #64: hugs crashes upon module reload
by Hugs 18 Apr '07

18 Apr '07

#64: hugs crashes upon module reload ----------------------+----------------------------------------------------- Reporter: guest | Owner: nobody Type: defect | Status: new Priority: critical | Milestone: Component: hugs | Version: 200609 Keywords: | ----------------------+----------------------------------------------------- A common occurence is the following failure when loading dll modules. with the latest release of hugs. This only occurs upon a reload. i.e. the initial load is fine. a reload from the hugs command line will cause the error. Database.HSQL> :load Database.HSQL ../../gcc/gcc/config/i386/w32-shared-ptr.c:234: failed assertion `w32_sharedptr- >size == sizeof(W32_EH_SHARED)' -- Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/64> Hugs <http://www.haskell.org/hugs/> Hugs 98, an interpreter for Haskell

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