December 2014 - ghc-tickets

Re: [GHC] #2456: For higher kinds, instance declarations need quantification in the context
by GHC 05 Dec '14

05 Dec '14

#2456: For higher kinds, instance declarations need quantification in the context -------------------------------------------+--------------------------- Reporter: ronwalf | Owner: Type: feature request | Status: closed Priority: normal | Milestone: ⊥ Component: Compiler | Version: 6.9 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #2893 Differential Revisions: | -------------------------------------------+--------------------------- Changes (by thomie): * status: new => closed * resolution: => duplicate * related: => #2893 Comment: Replying to [comment:7 simonpj]: > So I'll retitle this ticket as a feature request for such a feature. Note: doing this makes it more difficult to test whether a ticket can be closed or not, because the description, attached testcases and part of the discussion are still for the original bug. Nevertheless, this feature request is covered by #2893 (Implement "Quantified contexts" proposal). Also some discussion in #5927 and #7019. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2456#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2465: Fusion of recursive functions (was: View + Pattern Match not fused sufficiently)
by GHC 05 Dec '14

05 Dec '14

#2465: Fusion of recursive functions -------------------------------------+------------------------------------- Reporter: ryani | Owner: Type: feature | Status: new request | Milestone: ⊥ Priority: low | Version: 6.8.2 Component: Compiler | Keywords: Resolution: | Architecture: x86 Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Runtime | Related Tickets: #3123 performance bug | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * type: bug => feature request * related: => #3123 Comment: > But GHC isn't going to fuse recursive functions all by itself anytime soon. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2465#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2489: Registry keys are created in per-user HKCU instead of system-wide HKLM
by GHC 05 Dec '14

05 Dec '14

#2489: Registry keys are created in per-user HKCU instead of system-wide HKLM -------------------------------------+------------------------------------- Reporter: nimnul | Owner: Type: bug | Status: closed Priority: normal | Milestone: ⊥ Component: None | Version: 6.8.3 Resolution: wontfix | Keywords: Operating System: Windows | Architecture: Unknown/Multiple Type of failure: | Difficulty: Unknown None/Unknown | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * status: new => closed * resolution: => wontfix Comment: commit 9e4e2c24d1895ae81c92e4432b91026505827c96 {{{ Author: Ian Lynagh <> Date: Sat Apr 20 13:00:21 2013 +0100 Remove the Windows installer We now leave making installers to the Haskell Platform. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2489#comment:17> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2514: Add/Expose Binary API that allows dumping of any GHC Binary instance
by GHC 05 Dec '14

05 Dec '14

#2514: Add/Expose Binary API that allows dumping of any GHC Binary instance -------------------------------------+------------------------------------- Reporter: nominolo | Owner: nominolo Type: feature | Status: infoneeded request | Milestone: 7.10.1 Priority: lowest | Version: 6.9 Component: GHC API | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * status: new => infoneeded * failure: => None/Unknown Comment: Does anyone know what the status of this is? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2514#comment:16> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2522: Warning for missing export lists
by GHC 05 Dec '14

05 Dec '14

#2522: Warning for missing export lists -------------------------------------+------------------------------------- Reporter: tim | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: lowest | Version: 6.8.3 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * cc: NeilMitchell (added) Comment: Neil: is this something `hlint` could do? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2522#comment:13> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2531: Prune duplicates in ghci history
by GHC 05 Dec '14

05 Dec '14

#2531: Prune duplicates in ghci history -------------------------------------+------------------------------------- Reporter: venkat | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: lowest | Version: 6.8.3 Component: GHCi | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: Documentation bug | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * cc: hvr (added) * failure: None/Unknown => Documentation bug Comment: Replying to [comment:7 vivian]: > You can add the following line to your `.haskeline` file: > {{{ > > historyDuplicates IgnoreConsecutive > }}} > or `AlwaysAdd` or `IgnoreAll`. This could be added to the GHCi documentation. See also: http://trac.haskell.org/haskeline/wiki/UserPrefs -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2531#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2550: Add an option to read file names from a file instead of the command line
by GHC 05 Dec '14

05 Dec '14

#2550: Add an option to read file names from a file instead of the command line -------------------------------------+------------------------------------- Reporter: YitzGale | Owner: Type: feature | Status: new request | Milestone: 7.12.1 Priority: lowest | Version: 6.9 Component: Package | Keywords: system | Architecture: Unknown/Multiple Resolution: | Difficulty: Unknown Operating System: | Blocked By: Unknown/Multiple | Related Tickets: #2551 Type of failure: | None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * failure: => None/Unknown * component: Compiler => Package system * related: => #2551 * milestone: 7.10.1 => 7.12.1 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2550#comment:15> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2551: Allow multiple modules per source file
by GHC 05 Dec '14

05 Dec '14

#2551: Allow multiple modules per source file -------------------------------------+------------------------------------- Reporter: YitzGale | Owner: Type: feature | Status: new request | Milestone: ⊥ Priority: normal | Version: 6.9 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * status: closed => new * resolution: wontfix => -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2551#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2598: Avoid excessive specialisation in SpecConstr
by GHC 05 Dec '14

05 Dec '14

#2598: Avoid excessive specialisation in SpecConstr -------------------------------------+------------------------------------- Reporter: simonpj | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: lowest | Version: 6.8.3 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Runtime | Related Tickets: performance bug | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * failure: None/Unknown => Runtime performance bug -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2598#comment:20> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2598: Avoid excessive specialisation in SpecConstr
by GHC 05 Dec '14

05 Dec '14

#2598: Avoid excessive specialisation in SpecConstr -------------------------------------+------------------------------------- Reporter: simonpj | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: lowest | Version: 6.8.3 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by thomie): Replying to [comment:17 morabbin]: > Is this moot now? The excessive specializations still show up with `-fspec-constr-count` greater than 5. The default is 3, and was introduced in commit e5adcaf845207c73da65cb44cff4ef83b76dd4a9. I believe this ticket is about coming up with a better heuristic. {{{ Author: simonpj(a)microsoft.com <unknown> Date: Thu Mar 6 12:00:04 2008 +0000 Improve SpecConstr for local bindings: seed specialisation from the calls ... * New flag -fspec-constr-count=N sets the maximum number of specialisations for any single function to N. -fno-spec-constr-count removes the limit. ... }}} This is the command I used to test: {{{ ghc DropComment.hs -O -fspec-constr -ddump-simpl -fspec-constr-count=6 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2598#comment:19> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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