November 2016 - ghc-tickets

[GHC] #12568: Release hsc2hs new version to Hackage
by GHC 15 Nov '16

15 Nov '16

#12568: Release hsc2hs new version to Hackage -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: task | Status: new Priority: normal | Milestone: 8.0.2 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Richard Cook recently fixed #12054 in f5ae016e5a69ebf42d612805e51afd9227df9389. This needs to be released to Hackage before the 8.0.2 GHC release -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12568> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12827: RTS linker: handle 64-bit symbol table in archives
by GHC 15 Nov '16

15 Nov '16

#12827: RTS linker: handle 64-bit symbol table in archives -------------------------------------+------------------------------------- Reporter: hsyl20 | Owner: hsyl20 Type: bug | Status: new Priority: high | Milestone: 8.0.2 Component: Runtime | Version: 8.0.1 System (Linker) | Keywords: linker | Operating System: Unknown/Multiple Architecture: x86_64 | Type of failure: None/Unknown (amd64) | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): Phab:D2697 | Wiki Page: -------------------------------------+------------------------------------- The RTS linker should skip 64-bit symbol table entries in archives just like it skips 32-bit ones. See the original report thread on ghc-devs: https://mail.haskell.org/pipermail/ghc-devs/2016-November/013210.html -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12827> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12836: stack build command failing on creating new yesod-sqlite project
by GHC 15 Nov '16

15 Nov '16

#12836: stack build command failing on creating new yesod-sqlite project ----------------------------------------+--------------------------------- Reporter: v0d1ch | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Keywords: | Operating System: MacOS X Architecture: Unknown/Multiple | Type of failure: None/Unknown Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: ----------------------------------------+--------------------------------- Configuring yesod-auth-1.4.13.5... Building yesod-auth-1.4.13.5... Preprocessing library yesod-auth-1.4.13.5... [ 1 of 12] Compiling Yesod.PasswordStore ( Yesod/PasswordStore.hs, .stack- work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/PasswordStore.o ) Yesod/PasswordStore.hs:166:31: Warning: Defaulting the following constraint(s) to type ‘Integer’ (Integral b0) arising from a use of ‘^’ at Yesod/PasswordStore.hs:166:31 (Num b0) arising from the literal ‘32’ at Yesod/PasswordStore.hs:166:32-33 In the first argument of ‘(-)’, namely ‘2 ^ 32’ In the first argument of ‘(*)’, namely ‘(2 ^ 32 - 1)’ In the second argument of ‘(>)’, namely ‘(2 ^ 32 - 1) * hLen’ Yesod/PasswordStore.hs:419:1: Warning: Defined but not used: ‘toStrict’ Yesod/PasswordStore.hs:422:1: Warning: Defined but not used: ‘fromStrict’ [ 2 of 12] Compiling Yesod.Auth.Message ( Yesod/Auth/Message.hs, .stack- work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth/Message.o ) Yesod/Auth/Message.hs:23:1: Warning: The import of ‘mappend’ from module ‘Data.Monoid’ is redundant Yesod/Auth/Message.hs:698:1: Warning: Defined but not used: ‘croatianMessage’ Yesod/Auth/Message.hs:459:1: Warning: Pattern match(es) are overlapped In an equation for ‘finnishMessage’: finnishMessage Password = ... Yesod/Auth/Message.hs:459:1: Warning: Pattern match(es) are non-exhaustive In an equation for ‘finnishMessage’: Patterns not matched: CurrentPassword [ 3 of 12] Compiling Yesod.Auth.Routes ( Yesod/Auth/Routes.hs, .stack- work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth/Routes.o ) [ 4 of 12] Compiling Yesod.Auth ( Yesod/Auth.hs, .stack- work/dist/x86_64-osx/Cabal-1.22.5.0/build/Yesod/Auth.o ) ghc: panic! (the 'impossible' happened) (GHC version 7.10.3 for x86_64-apple-darwin): Loading temp shared object failed: dlopen(/var/folders/l0/kb14zym51tn31vfsr4bmf_yr0000gp/T/ghc18354_0/libghc_21.dylib, 5): no suitable image found. Did find: /var/folders/l0/kb14zym51tn31vfsr4bmf_yr0000gp/T/ghc18354_0/libghc_21.dylib: malformed mach-o: load commands size (35808) > 32768 Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12836> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10771: Installation of Ivory - Static flags have not been initialised
by GHC 15 Nov '16

15 Nov '16

#10771: Installation of Ivory - Static flags have not been initialised -------------------------------------+------------------------------------- Reporter: stiege | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Keywords: | Operating System: Unknown/Multiple Architecture: x86_64 | Type of failure: Runtime crash (amd64) | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- Unfortunately I'm a Haskell newbie and can't provide very good detail for this report (I struggled to pass the Captcha!). However I will attach the output from a "make all" from the Ivory repository: https://github.com/GaloisInc/ivory.git Commit: '7ecea5839898b65430ca298fd1f3af4d2272e3fb'. Basically from what I can see, looks like it didn't work, output ends with: examples\Coroutine.hs:26:50: Warning: Unticked promoted constructor: `:->'. Use ':-> instead of `:->'. ghc.exe: panic! (the 'impossible' happened) (GHC version 7.10.2 for x86_64-unknown-mingw32): Static flags have not been initialised! Please call GHC.parseStaticFlags early enough. Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug ghc.exe: warning: _tzset from msvcrt is linked instead of __imp__tzset -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10771> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12772: (type f1 ~> f2 = forall a. f1 a -> f2 a) to core libraries
by GHC 14 Nov '16

14 Nov '16

#12772: (type f1 ~> f2 = forall a. f1 a -> f2 a) to core libraries -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Build System | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Is this something that belongs to core libraries (it has other names in the wild, `:~>`, `Natural`..) {{{#!hs type f1 ~> f2 = forall a. f1 a -> f2 a }}} I use it all the time and end up redefining it (it is such a short type that maybe it's not worth it) {{{#!hs unLift :: Applicative f => Lift f a -> f a mapLift :: (f a -> g a) -> (Lift f a -> Lift g a) mapFreeT :: (Functor f, Functor m) => (forall a. m a -> m' a) -> (FreeT f m a -> FreeT f m' a) mapFreeT :: (Functor f, Functor m) => (forall a. m a -> m' a) -> (FreeT f m a -> FreeT f m' a) vmap :: (a -> a') -> (Vec a n -> Vec a' n) liftIO :: MonadIO m => IO a -> m a hoist :: Monad m => (forall a. m a -> n a) -> (t m b -> t n b) }}} becomes {{{#!hs unLift :: Applicative f => Lift f ~> f mapLift :: (f ~> g) -> (Lift f ~> Lift g) mapFreeT :: (Functor f, Functor m) => (m ~> m') -> (FreeT f m ~> FreeT f m') vmap :: (a -> a') -> (Vec a ~> Vec a') liftIO :: MonadIO m => IO ~> m hoist :: Monad m => (m ~> n) -> (t m ~> t n) }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12772> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12773: Data.Functor.Classes instances for ZipList
by GHC 14 Nov '16

14 Nov '16

#12773: Data.Functor.Classes instances for ZipList -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: feature | Status: new request | Priority: low | Milestone: Component: Core | Version: 8.0.1 Libraries | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Since `Data.Functor.Classes` is now maintained by the CLC, how about instances from [https://hackage.haskell.org/package/prelude- extras-0.4.0.1/src/src/Prelude/Extras.hs prelude-extras], at least instances for `ZipList` {{{#!hs instance Eq1 ZipList instance Ord1 ZipList instance Show1 ZipList }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12773> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12835: ghc: panic! (the 'impossible' happened) - find_tycon
by GHC 14 Nov '16

14 Nov '16

#12835: ghc: panic! (the 'impossible' happened) - find_tycon -------------------------------------+------------------------------------- Reporter: mrijkeboer | Owner: Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Linux Architecture: x86_64 | Type of failure: Compile-time (amd64) | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- {{{ $ stack build server-0.0.0.1: build -- While building package server-0.0.0.1 using: /home/martijn/.stack/setup-exe-cache/x86_64-linux/setup-Simple- Cabal-1.24.0.0-ghc-8.0.1 --builddir=.stack- work/dist/x86_64-linux/Cabal-1.24.0.0 build lib:server exe:server --ghc- options " -ddump-hi -ddump-to-file" Process exited with code: ExitFailure 1 Logs have been written to: /home/martijn/server/.stack- work/logs/server-0.0.0.1.log Preprocessing library server-0.0.0.1... [20 of 20] Compiling Application ( src/Application.hs, .stack- work/dist/x86_64-linux/Cabal-1.24.0.0/build/Application.o ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.1 for x86_64-unknown-linux): find_tycon YesodSubRunnerEnv [] Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12835> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12834: GHC panic: while printing Non type-variable argument
by GHC 14 Nov '16

14 Nov '16

#12834: GHC panic: while printing Non type-variable argument -------------------------------------+------------------------------------- Reporter: phadej | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- {{{ {-# LANGUAGE GADTs, TypeFamilies, DataKinds, TypeOperators, MultiParamTypeClasses, UndecidableInstances, UndecidableSuperClasses, FlexibleInstances, PolyKinds, KindSignatures #-} import GHC.Exts (Constraint) newtype I a = I a data NP :: (k -> *) -> [k] -> * where Nil :: NP f '[] (:*) :: f x -> NP f xs -> NP f (x ': xs) infixr 5 :* class (AllF f xs, SListI xs) => All (f :: k -> Constraint) (xs :: [k]) instance (AllF f xs, SListI xs) => All f xs data SList :: [k] -> * where SNil :: SList '[] SCons :: SListI xs => SList (x ': xs) class SListI (xs :: [k]) where -- | Get hold of the explicit singleton (that one can then -- pattern match on). sList :: SList xs instance SListI '[] where sList = SNil instance SListI xs => SListI (x ': xs) where sList = SCons -- | Type family used to implement 'All'. -- type family AllF (c :: k -> Constraint) (xs :: [k]) :: Constraint type instance AllF _c '[] = () type instance AllF c (x ': xs) = (c x, All c xs) semigroup :: All ((~) (Maybe Int)) xs => NP I xs -> NP I xs -> NP I xs semigroup = undefined }}} Causes {{{ ghc-failure-all.hs:37:14: error: • Non type-variable argumentghc: panic! (the 'impossible' happened) (GHC version 8.0.1 for x86_64-apple-darwin): print_equality ~ }}} If `AllF` is used directly in the definition of `sappend`, there is no error whatsoever. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12834> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11660: Remove Type pretty-printer in favor of IfaceType
by GHC 14 Nov '16

14 Nov '16

#11660: Remove Type pretty-printer in favor of IfaceType -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `Type` pretty-printer has a fair amount of code in common with the pretty-printer for `IfaceType`. Moreover, both cases handle a number of special cases. With the introduction of `-fprint-explicit-runtime-reps` (Phab:D1961), there is now an inconsistency between these two. Let's resolve this inconsistency by eliminating the `Type` pretty-printer in favor of using the `IfaceType` printer. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11660> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12831: Fulltext search SQL error in Trac
by GHC 12 Nov '16

12 Nov '16

#12831: Fulltext search SQL error in Trac -------------------------------------+------------------------------------- Reporter: skovalev | Owner: hvr Type: bug | Status: new Priority: normal | Milestone: Component: Trac & Git | Version: Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- I have faced with `Trac` errors while searching next queries: * `ghc: panic!` * `the 'impossible' happened` * `Report execution failed` -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12831> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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