June 2015 - ghc-tickets

[GHC] #10178: hs-boot/hsig ambiguity empty data declaration or type with no constructors
by GHC 04 Jun '15

04 Jun '15

#10178: hs-boot/hsig ambiguity empty data declaration or type with no constructors -------------------------------------+------------------------------------- Reporter: ezyang | Owner: ezyang Type: bug | Status: new Priority: lowest | Milestone: Component: Compiler | Version: 7.11 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- When I write in a boot or signature file: {{{ data Foo }}} it is ambiguous whether or not this is a fully-specified empty data declaration, or a data type which has its constructors unspecified. This doesn't matter too much for hs-boot (since you can't use the data constructors in any case) but for signatures we might want to force a data type to be empty. Though I think this case should be rare. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10178> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8723: sdist should not have to build everything
by GHC 04 Jun '15

04 Jun '15

#8723: sdist should not have to build everything ----------------------------------------------+---------------------------- Reporter: nomeata | Owner: Type: task | Status: new Priority: low | Milestone: Component: Build System | Version: 7.6.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Moderate (less than a day) | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: ----------------------------------------------+---------------------------- It would be nice if instead of {{{ $ perl boot $ ./configure $ make $ make sdist }}} it would suffice to run {{{ $ perl boot $ ./configure $ make sdist }}} and if that would not build more than necessary to generate the tarballs. It would save time on the GHC-HEAD-Debian-Package-autobuilder that I am currently working on. I might look into this bug eventually, but if someone else feels like doing it: Even better. (Difficulty estimated conservatively; might well be less than an hour, besides maybe waiting for test runs to finish :-)) Remember to update MakingReleases and Building/StandardTargets if this is implemented. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8723> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1288: ghci 6.6 foreign import stdcall broken, panic, panic!!!!
by GHC 04 Jun '15

04 Jun '15

#1288: ghci 6.6 foreign import stdcall broken, panic, panic!!!! -------------------------+------------------------------------------------- Reporter: | Owner: igloo jvlask@… | Status: closed Type: | Milestone: 6.8.3 merge | Version: 6.6 Priority: | Keywords: ghci foreign ffi dll import normal | stdcall Component: GHCi | Architecture: x86 Resolution: | fixed | Operating System: | Windows | Test Case: | -------------------------+------------------------------------------------- Comment (by Thomas Miedema <thomasmiedema@…>): In [changeset:"07feab194aff4a2ae39514480736ce23a3b679b1/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="07feab194aff4a2ae39514480736ce23a3b679b1" Testsuite: ignore `stdcall attribute ignored` (#1288) That warning is only shown on some platforms, and is I believe harmless. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1288#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9507: ghc-pkg mode to query by package-key
by GHC 04 Jun '15

04 Jun '15

#9507: ghc-pkg mode to query by package-key -------------------------------------+------------------------------------- Reporter: ezyang | Owner: ezyang Type: feature request | Status: new Priority: normal | Milestone: Component: ghc-pkg | Version: 7.9 Keywords: backpack | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Right now, ghc-pkg understands package names and IPIDs. It should support package keys too. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9507> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10386: Documentation for -Wall is wrong
by GHC 04 Jun '15

04 Jun '15

#10386: Documentation for -Wall is wrong -------------------------------------+------------------------------------- Reporter: AlexET | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: | Version: 7.10.1 Documentation | Operating System: Unknown/Multiple Keywords: | Type of failure: Documentation Architecture: | bug Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- The documentation talks about the flags not enabled by -Wall and then lists the flags enabled by -Wall. Either the negative should be removed or the flags changed to be the ones not implied by -Wall. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10386> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10477: Tab-completing in a directory with Unicode heiroglyph crashes ghci
by GHC 04 Jun '15

04 Jun '15

#10477: Tab-completing in a directory with Unicode heiroglyph crashes ghci -------------------------------------------+------------------------------- Reporter: acfoltzer | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.10.1 Keywords: | Operating System: Windows Architecture: Unknown/Multiple | Type of failure: GHCi crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------------+------------------------------- With a file called 𓅖.hs in `C:\Users\acfoltzer`, the following in `cmd.exe`: {{{ C:\Users\acfoltzer>chcp 65001 Active code page: 65001 C:\Users\acfoltzer>ghci GHCi, version 7.10.1: http://www.haskell.org/ghc/ :? for help Prelude> :l C:\cygwin\home\acfoltzer\<TAB> ghc.exe: panic! (the 'impossible' happened) (GHC version 7.10.1 for i386-unknown-mingw32): Enum.toEnum{Word16}: tag (78166) is outside of bounds (0,65535) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Here, I'm setting the code page first according to the various bits of folk wisdom on the Internet about getting Unicode to properly display in `cmd.exe`. I don't get this crash with a Cygwin terminal, but rather see `??.hs`. I came across this because I was getting the same exception in the Cryptol REPL, so I suspect it's not unique to GHCi, but is rather something fishy in base. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10477> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4012: Compilation results are not deterministic
by GHC 04 Jun '15

04 Jun '15

#4012: Compilation results are not deterministic -------------------------------------+------------------------------------- Reporter: kili | Owner: Type: bug | Status: new Priority: high | Milestone: 7.12.1 Component: Compiler | Version: 6.12.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Other | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by thoughtpolice): I actually tested both, sorry. Just checked: yes, if I disable short-outs and CSE, it goes away. If I only disable CSE, it goes away. This is still all on GHC 7.10. I'll test on HEAD and STABLE again when I get a chance and post the 4-way results. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4012#comment:102> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4012: Compilation results are not deterministic
by GHC 04 Jun '15

04 Jun '15

#4012: Compilation results are not deterministic -------------------------------------+------------------------------------- Reporter: kili | Owner: Type: bug | Status: new Priority: high | Milestone: 7.12.1 Component: Compiler | Version: 6.12.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Other | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by thoughtpolice): I actually tested both, sorry. Just checked: yes, if I disable short-outs and CSE, it goes away. If I only disable CSE, it goes away. This is still all on GHC 7.10. I'll test on HEAD and STABLE again when I get a chance and post the 4-way results. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4012#comment:101> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4114: Add a flag to remove/delete intermediate files generated by GHC
by GHC 04 Jun '15

04 Jun '15

#4114: Add a flag to remove/delete intermediate files generated by GHC -------------------------------------+------------------------------------- Reporter: guest | Owner: Type: feature request | VictorDenisov Priority: normal | Status: new Component: Compiler | Milestone: 7.12.1 Resolution: | Version: 6.10.4 Operating System: Unknown/Multiple | Keywords: newcomer Type of failure: None/Unknown | Architecture: Blocked By: | Unknown/Multiple Related Tickets: #2258 | Test Case: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by thomie): * priority: low => normal Comment: VictorDenisov: did you make any progress on this ticket or #2258? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4114#comment:19> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7401: Can't derive instance for Eq when datatype has no constructor, while it is trivial do do so.
by GHC 04 Jun '15

04 Jun '15

#7401: Can't derive instance for Eq when datatype has no constructor, while it is trivial do do so. -------------------------------------+------------------------------------- Reporter: jpbernardy | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: deriving, Operating System: Unknown/Multiple | newcomer Type of failure: GHC rejects | Architecture: valid program | Unknown/Multiple Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by thomie): * owner: monoidal => -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7401#comment:22> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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