March 2015 - ghc-tickets

[GHC] #10123: GHCi won't start in Powershell ISE
by GHC 01 Mar '15

01 Mar '15

#10123: GHCi won't start in Powershell ISE -------------------------------------+------------------------------------- Reporter: qwfy | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.8.3 Keywords: powershell | Operating System: Windows Architecture: | Type of failure: Incorrect result Unknown/Multiple | at runtime Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- 1. Start Powershell ISE (Windows PowerShell ISE Host 4.0 on Windows 8.1) 2. Type "ghci" You will see the output: {{{ GHCi, version 7.8.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. }}} After `Loading package base ... linking ... done.`, GHCi just hangs, won't continue, the prompt is never displayed. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10123> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8896: ghci fails on Arm - "Illegal instruction"
by GHC 01 Mar '15

01 Mar '15

#8896: ghci fails on Arm - "Illegal instruction" ----------------------------+------------------------------- Reporter: Ansible | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.1-rc2 Keywords: arm ghci | Operating System: Linux Architecture: arm | Type of failure: GHCi crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------+------------------------------- With the help of qemu compiled ghc 7.8.1-rc2 for raspberry pi. Ghc is successful, and ghci compiles, but ghci gets an 'Illegal instruction' error. A sample session: ccrma@satellite:~$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.0.20140228 ccrma@satellite:~$ ghci --version The Glorious Glasgow Haskell Compilation System, version 7.8.0.20140228 ccrma@satellite:~$ ghci GHCi, version 7.8.0.20140228: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... Illegal instruction ccrma@satellite:~$ -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8896> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #6079: SEH exception handler not implemented on Win64
by GHC 01 Mar '15

01 Mar '15

#6079: SEH exception handler not implemented on Win64 -------------------------------------+------------------------------------- Reporter: igloo | Owner: Phyx- Type: bug | Status: patch Priority: normal | Milestone: 7.12.1 Component: Runtime System | Version: 7.5 Resolution: | Keywords: Operating System: Windows | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: derefnull, Related Tickets: | divbyzero | Blocking: | Differential Revisions: Phab:D691 -------------------------------------+------------------------------------- Changes (by Phyx-): * differential: Phab:691 => Phab:D691 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6079#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #6079: SEH exception handler not implemented on Win64
by GHC 01 Mar '15

01 Mar '15

#6079: SEH exception handler not implemented on Win64 -------------------------------------+------------------------------------- Reporter: igloo | Owner: Phyx- Type: bug | Status: patch Priority: normal | Milestone: 7.12.1 Component: Runtime System | Version: 7.5 Resolution: | Keywords: Operating System: Windows | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: derefnull, Related Tickets: | divbyzero | Blocking: | Differential Revisions: Phab:691 -------------------------------------+------------------------------------- Changes (by Phyx-): * status: new => patch * differential: => Phab:691 * architecture: x86_64 (amd64) => Unknown/Multiple Comment: Implementation has been mostly rewritten and a more uniform approach used for both x64 and x86. This also allowed the removal of a lot of the build hacks for windows and allows RtsMain to be able to be built with optimizations again. See Phrabricator differential for more information. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6079#comment:11> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9795: Debug.Trace.trace is too strict
by GHC 01 Mar '15

01 Mar '15

#9795: Debug.Trace.trace is too strict -------------------------------------+------------------------------------- Reporter: jcpetruzza | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: libraries/base | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Consider the following toy example: {{{#!hs import Debug.Trace f n = let res = g n in (trace $ unlines ["in: " ++ show n, "out: " ++ show res]) res where g n = if n <= 1000 then n+1 else g n main = print $ [f 500, f 302, f 2000, f 22] }}} When run it outputs: {{{ in: 500 out: 501 in: 302 out: 303 ^C }}} In a real example, for a program that hangs, where one only ''suspects'' that `f` may be the culprit, and where `f` is being called from various places with different values, this output is not very useful (and in fact, it is misleading). My mental model of the `trace` function is something along these lines: {{{#!hs myTrace :: String -> a -> a myTrace s a = unsafePerformIO $ do putStrLn s return a }}} and in fact, replacing `trace` by `myTrace` in the example above one gets the more useful: {{{ in: 500 out: 501 in: 302 out: 303 in: 2000 ^C }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9795> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1487: unix package: test needed for getLoginName
by GHC 01 Mar '15

01 Mar '15

#1487: unix package: test needed for getLoginName -------------------------------------+------------------------------------- Reporter: simonmar | Owner: ekmett Type: bug | Status: new Priority: lowest | Milestone: Component: Core Libraries | Version: Resolution: | Keywords: Operating System: Linux | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: Related Tickets: #8293 | Differential Revisions: -------------------------------------+------------------------------------- Changes (by argiopeweb): * cc: core-libraries-committee@… (added) Comment: Passed upstream as https://github.com/haskell/unix/issues/40 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1487#comment:28> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5063: unix package has untracked dependency on libbsd
by GHC 01 Mar '15

01 Mar '15

#5063: unix package has untracked dependency on libbsd -------------------------------------+------------------------------------- Reporter: duncan | Owner: trommler Type: bug | Status: new Priority: low | Milestone: 7.12.1 Component: Core Libraries | Version: 7.0.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Other | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by argiopeweb): * cc: core-libraries-committee@… (added) Comment: Passed upstream as https://github.com/haskell/unix/issues/39 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5063#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7828: RebindableSyntax and Arrow
by GHC 28 Feb '15

28 Feb '15

#7828: RebindableSyntax and Arrow -------------------------------------+------------------------------------- Reporter: | Owner: AlessandroVermeulen | Status: new Type: bug | Milestone: 7.12.1 Priority: normal | Version: 7.6.2 Component: Compiler (Type | Keywords: checker) | Architecture: Resolution: | Unknown/Multiple Operating System: Unknown/Multiple | Test Case: Type of failure: GHC rejects | Blocking: valid program | Differential Revisions: Phab:D72 Blocked By: | Related Tickets: #1537, #3613 | -------------------------------------+------------------------------------- Comment (by tomberek): Interested in this. What is the current status? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7828#comment:53> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3919: Or-patterns as GHC extension
by GHC 28 Feb '15

28 Feb '15

#3919: Or-patterns as GHC extension -------------------------------------+------------------------------------- Reporter: BjornEdstrom | Owner: Type: feature request | Status: new Priority: normal | Milestone: ⊥ Component: Compiler | Version: Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by aavogt): Replying to [comment:2 aavogt]: I've since uploaded that QQ to hackage: http://hackage.haskell.org/package/OrPatterns -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3919#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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