December 2018 - ghc-tickets

Re: [GHC] #7602: Threaded RTS performing badly on recent OS X (10.8?)
by GHC 01 Dec '18

01 Dec '18

#7602: Threaded RTS performing badly on recent OS X (10.8?) -------------------------------------+------------------------------------- Reporter: simonmar | Owner: thoughtpolice Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: Resolution: | Keywords: thread-local | state, TLS clang Operating System: MacOS X | Architecture: x86_64 Type of failure: Runtime | (amd64) performance bug | Test Case: Blocked By: 7678 | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by carter): some patches need to be merged in so that folks aside from me can continue building with gcc :( -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7602#comment:58> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8043: Feature Request : Qualified module exports
by GHC 01 Dec '18

01 Dec '18

#8043: Feature Request : Qualified module exports ------------------------------------+------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: Other Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- I quite like the practice of using `-XNoImplicitPrelude` and then defining my own (often per-project) Prelude doing things like: {{{ module MyProject.Prelude ( module P ) import Data.Text as P (Text) import Prelude as P hiding (head, init, tail, last) }}} As an extension to the above idea, I would like to add qualified module exports defined so that I can do this: {{{ module MyProject.Prelude ( module P , qualified module T ) import Data.Text as P (Text) import Prelude as P hiding (head, init, tail, last) import qualified Data.Text as T }}} so that any file which imports `MyProject.Prelude` will then have all the identifiers that they would normally get if they did: {{{ import qualified Data.Text as T }}} Is this something that would have to go through the Haskell Next procedure? If so, how does one get that kicked off? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8043> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #14655: Compiled nofib-analyse executable segfaults under windows
by GHC 01 Dec '18

01 Dec '18

#14655: Compiled nofib-analyse executable segfaults under windows -------------------------------------+------------------------------------- Reporter: AndreasK | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Runtime crash Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Happens in 8.2.2 and HEAD {{{ $ ./nofib-analyse.exe ../log2_range ../log2_range +RTS --generate-crash- dumps Access violation in generated code when reading 0xffffffffffffffff Attempting to reconstruct a stack trace... Frame Code address * 0x12ad980 0x454f0b C:\ghc\msys64\home\Andi\ghc_head\nofib\nofib- analyse\nofib-analyse.exe+0x54f0b * 0x12ada10 0x455515 C:\ghc\msys64\home\Andi\ghc_head\nofib\nofib- analyse\nofib-analyse.exe+0x55515 * 0x12adb80 0x4576f6 C:\ghc\msys64\home\Andi\ghc_head\nofib\nofib- analyse\nofib-analyse.exe+0x576f6 * 0x12adb88 0x44bfcd C:\ghc\msys64\home\Andi\ghc_head\nofib\nofib- analyse\nofib-analyse.exe+0x4bfcd * 0x12adb90 0x5512580 * 0x12adb98 0x9d6e10 C:\ghc\msys64\home\Andi\ghc_head\nofib\nofib- analyse\nofib-analyse.exe+0x5d6e10 * 0x12adba0 0x2 * 0x12adba8 0x53b4f30 Crash dump created. Dump written to: C:\ghc\msys64\tmp\ghc-20180109-171729-25632-48420.dmp }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14655> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #14613: Validate Failure On OSX -- implicit fall through error for machO linker support (master == ghc8.5)
by GHC 01 Dec '18

01 Dec '18

#14613: Validate Failure On OSX -- implicit fall through error for machO linker support (master == ghc8.5) -------------------------------------+------------------------------------- Reporter: carter | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.3 (Linking) | Keywords: | Operating System: MacOS X Architecture: x86_64 | Type of failure: None/Unknown (amd64) | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- seems like validate for OSX needs some TLC, heres a bug from the linker code that maybe could use an eyeball or two. Phyx suggests someone familiar with the code base could simply do ` __attribute__ ((fallthrough)); `, which is allegedly also supported by clang? {{{ "inplace/bin/ghc-stage1" -optc-fno-stack-protector -optc-Wall -optc-Werror -optc-Wall -optc-Wextra -optc-Wstrict-prototypes -optc-Wmissing-prototypes -optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return -optc- Wpointer-arith -optc-Wmissing-noreturn -optc-Wnested-externs -optc- Wredundant-decls -optc-Wundef -optc-Iincludes -optc-Iincludes/dist -optc- Iincludes/dist-derivedconstants/header -optc-Iincludes/dist- ghcconstants/header -optc-Irts -optc-Irts/dist/build -optc-DCOMPILING_RTS -optc-fno-strict-aliasing -optc-fno-common -optc-DDTRACE -optc- Irts/dist/build/./autogen -optc-Wno-error=inline -optc-O2 -optc-fomit- frame-pointer -optc-g -optc-DDYNAMIC -optc-DRtsWay=\"rts_dyn\" -fPIC -dynamic -O0 -H64m -Wall -fllvm-fill-undef-with-garbage -Werror -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -this-unit-id rts -dcmm-lint -DDTRACE -i -irts -irts/dist/build -Irts/dist/build -irts/dist/build/./autogen -Irts/dist/build/./autogen -O2 -Wcpp-undef -Wnoncanonical-monad-instances -c rts/posix/GetTime.c -o rts/dist/build/posix/GetTime.dyn_o rts/linker/MachO.c: In function 'ocGetNames_MachO': rts/linker/MachO.c:1532:17: error: error: this statement may fall through [-Werror=implicit- fallthrough=] secArray[i].info->relocation_info ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ = (MachORelocationInfo*)(oc->image + section->reloff); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | 1532 | = (MachORelocationInfo*)(oc->image + section->reloff); | ^ rts/linker/MachO.c:1534:13: error: note: here default: { ^~~~~~~ | 1534 | default: { }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14613> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4900: Consider usage files in the GHCi recompilation check
by GHC 01 Dec '18

01 Dec '18

#4900: Consider usage files in the GHCi recompilation check -------------------------------------+------------------------------------- Reporter: cdsmith | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: TH_Depends Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by Wizek): * cc: Wizek (added) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4900#comment:82> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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