- ghc-tickets - Haskell.org

Re: [GHC] #7542: GHC doesn't optimize (strict) composition with id
by GHC 13 Jan '13

13 Jan '13

#7542: GHC doesn't optimize (strict) composition with id ---------------------------------+------------------------------------------ Reporter: shachaf | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: Runtime performance bug Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by ekmett): * cc: ekmett@… (added) -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7542#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #849: Offer control over branch prediction
by GHC 13 Jan '13

13 Jan '13

#849: Offer control over branch prediction ---------------------------------+------------------------------------------ Reporter: simonpj | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.6.2 Component: Compiler | Version: 6.4.2 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: N/A Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by buecking): * cc: buecking@… (added) -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/849#comment:21> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3005: Normalize fully-applied type functions prior to display
by GHC 13 Jan '13

13 Jan '13

#3005: Normalize fully-applied type functions prior to display -------------------------------+-------------------------------------------- Reporter: dmcclean | Owner: chak Type: feature request | Status: closed Priority: lowest | Milestone: 7.6.2 Component: GHCi | Version: 6.10.1 Resolution: fixed | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- Changes (by monoidal): * status: new => closed * resolution: => fixed Comment: I believe this is fixed by the {{{:kind!}}} command. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3005#comment:13> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7372: Lint failure in GHC 7.6.1
by GHC 13 Jan '13

13 Jan '13

#7372: Lint failure in GHC 7.6.1 -------------------------------+-------------------------------------------- Reporter: simonpj | Owner: Type: bug | Status: closed Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.6.1 Resolution: fixed | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- Changes (by monoidal): * status: new => closed * resolution: => fixed Comment: I checked it. TL;DR: the same cause as in #7312, fixed in HEAD and STABLE. Here's a small version: {{{ module Main where data Exp = Cte Integer | Let Exp eval :: Exp -> (->) a Integer eval (Cte i) = return i -- (1) eval (Let b) = \m -> eval b m -- (2) main = undefined }}} Under GHC 7.6.1, there are two problems. Both are fixed by changing (->) a Integer to a -> Integer. Line (1) compiles but fails dcore-lint. In fact {{{ c :: (->) a a c = id }}} already fails dcore-lint, saying that the types {{{(->) a a}}} and {{{a -> a}}} do not match. Line (2) gives panic identical to #7312. The code works fine after the fix in #7312. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7372#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3333: GHCi doesn't load weak symbols
by GHC 13 Jan '13

13 Jan '13

#3333: GHCi doesn't load weak symbols --------------------------------------+------------------------------------- Reporter: heatsink | Owner: akio Type: bug | Status: patch Priority: normal | Milestone: 7.6.2 Component: GHCi | Version: 6.10.4 Keywords: weak, dynamic loading | Os: Linux Architecture: x86 | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | --------------------------------------+------------------------------------- Comment(by akio): The patches validate together on my Linux machine. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3333#comment:22> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7534: allocateRegsAndSpill: Cannot read from uninitialized register
by GHC 13 Jan '13

13 Jan '13

#7534: allocateRegsAndSpill: Cannot read from uninitialized register --------------------------+------------------------------------------------- Reporter: erikd | Owner: simonmar Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.7 Keywords: | Os: Linux Architecture: powerpc64 | Failure: Building GHC failed Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | --------------------------+------------------------------------------------- Comment(by PHO): Isn't this related to #7442? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7534#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2705: ghc discards version of wired-in packages
by GHC 12 Jan '13

12 Jan '13

#2705: ghc discards version of wired-in packages -------------------------------+-------------------------------------------- Reporter: thoughtpolice | Owner: Type: bug | Status: closed Priority: normal | Milestone: _|_ Component: Compiler | Version: 6.10.1 Resolution: wontfix | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- Changes (by thoughtpolice): * status: new => closed * failure: => None/Unknown * resolution: => wontfix Comment: This bug is old, will probably never be fixed and is a bad idea in hindsight. Closing. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2705#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7216: Compositional blocking on file descriptors
by GHC 12 Jan '13

12 Jan '13

#7216: Compositional blocking on file descriptors -------------------------------+-------------------------------------------- Reporter: AndreasVoellmy | Owner: igloo Type: feature request | Status: closed Priority: normal | Milestone: 7.8.1 Component: libraries/base | Version: 7.4.2 Resolution: fixed | Keywords: Os: Unknown/Multiple | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- Changes (by igloo): * status: patch => closed * resolution: => fixed Comment: Applied, thanks! -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7216#comment:16> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1407: Add the ability to :set -l{foo} in .ghci files
by GHC 12 Jan '13

12 Jan '13

#1407: Add the ability to :set -l{foo} in .ghci files ----------------------------------------+----------------------------------- Reporter: guest | Owner: igloo Type: feature request | Status: new Priority: normal | Milestone: _|_ Component: GHCi | Version: 6.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Easy (less than 1 hour) | Testcase: Blockedby: | Blocking: Related: | ----------------------------------------+----------------------------------- Comment(by igloo): This works: {{{ $ ghci -lz GHCi, version 7.7.20130112: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading object (dynamic) /usr/lib/gcc/x86_64-linux- gnu/4.4.5/../../../../lib/libz.so ... done final link ... done Prelude> import Foreign.C Prelude Foreign.C> import Foreign.Ptr Prelude Foreign.C Foreign.Ptr> foreign import ccall "zlibVersion" z :: IO CString Prelude Foreign.C Foreign.Ptr> z >>= peekCString "1.2.3.4" Prelude Foreign.C Foreign.Ptr> }}} This doesn't: {{{ $ ghci GHCi, version 7.7.20130112: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> :set -lz Prelude> import Foreign.C Prelude Foreign.C> import Foreign.Ptr Prelude Foreign.C Foreign.Ptr> foreign import ccall "zlibVersion" z :: IO CString ByteCodeLink: can't find label During interactive linking, GHCi couldn't find the following symbol: zlibVersion This may be due to you not asking GHCi to load extra object files, archives or DLLs needed by your current session. Restart GHCi, specifying the missing library using the -L/path/to/object/dir and -lmissinglibname flags, or simply by naming the relevant files on the GHCi command line. Alternatively, this link failure might indicate a bug in GHCi. If you suspect the latter, please send a bug report to: glasgow-haskell-bugs(a)haskell.org }}} -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1407#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7406: -ddump-ds does not turn on -fforce-recomp
by GHC 12 Jan '13

12 Jan '13

#7406: -ddump-ds does not turn on -fforce-recomp ---------------------------+------------------------------------------------ Reporter: goldfire | Owner: igloo Type: bug | Status: closed Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.7 Resolution: fixed | Keywords: Os: MacOS X | Architecture: Unknown/Multiple Failure: None/Unknown | Difficulty: Easy (less than 1 hour) Testcase: | Blockedby: Blocking: | Related: ---------------------------+------------------------------------------------ Changes (by igloo): * status: new => closed * resolution: => fixed Comment: Docs fixed. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7406#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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