March 2015 - ghc-tickets

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

15 Mar '15

#6079: SEH exception handler not implemented on Win64 -------------------------------------+------------------------------------- Reporter: igloo | Owner: Phyx- Type: bug | Status: closed Priority: normal | Milestone: 7.12.1 Component: Runtime System | Version: 7.5 Resolution: fixed | Keywords: Operating System: Windows | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: derefnull, Related Tickets: #1820 | divbyzero | Blocking: | Differential Revisions: Phab:D691 -------------------------------------+------------------------------------- Changes (by Phyx-): * related: 1820 => #1820 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6079#comment:16> 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 15 Mar '15

15 Mar '15

#6079: SEH exception handler not implemented on Win64 -------------------------------------+------------------------------------- Reporter: igloo | Owner: Phyx- Type: bug | Status: closed Priority: normal | Milestone: 7.12.1 Component: Runtime System | Version: 7.5 Resolution: fixed | Keywords: Operating System: Windows | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: derefnull, Related Tickets: 1820 | divbyzero | Blocking: | Differential Revisions: Phab:D691 -------------------------------------+------------------------------------- Changes (by Phyx-): * related: => 1820 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6079#comment:15> 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 15 Mar '15

15 Mar '15

#6079: SEH exception handler not implemented on Win64 -------------------------------------+------------------------------------- Reporter: igloo | Owner: Phyx- Type: bug | Status: closed Priority: normal | Milestone: 7.12.1 Component: Runtime System | Version: 7.5 Resolution: fixed | 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-): * status: patch => closed * resolution: => fixed -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6079#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1820: Windows segfault-catching only works for the main thread
by GHC 15 Mar '15

15 Mar '15

#1820: Windows segfault-catching only works for the main thread -------------------------------------+------------------------------------- Reporter: simonmar | Owner: Type: bug | Status: closed Priority: lowest | Milestone: 7.12.1 Component: Runtime System | Version: 6.8.1 Resolution: fixed | Keywords: Operating System: Windows | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: Related Tickets: 6079 | derefnull(ghci), divbyzero(ghci) | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by Phyx-): * cc: simonmar (added) * status: new => closed * resolution: => fixed * related: => 6079 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1820#comment:19> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7543: Constraint synonym instances
by GHC 14 Mar '15

14 Mar '15

#7543: Constraint synonym instances -------------------------------------+------------------------------------- Reporter: monoidal | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 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 goldfire): Building on comment:1, would it be easy to build this feature if the names of the methods have no scoping conflicts? That is, just do a normal (non- instance-style) lookup of method names, even in instances. If there is no ambiguity, proceed. If there is ambiguity, look at the instance head. If it's a class name, use that to disambiguate. Otherwise (if it's a synonym or bogus), report an error. That seems simple enough and without undue upheaval. Personally, I don't think disambiguating among multiply-in-scope names should hold this feature up. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7543#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7543: Constraint synonym instances
by GHC 14 Mar '15

14 Mar '15

#7543: Constraint synonym instances -------------------------------------+------------------------------------- Reporter: monoidal | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.6.1 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 bheklilr): Has there been any more interest in this bug? I happened to run across it for the first time today with a problem essentially identical to @ekmett's. Any chance of it getting fixed one way or the other? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7543#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9823: --show-iface panics with HEAD
by GHC 14 Mar '15

14 Mar '15

#9823: --show-iface panics with HEAD -------------------------------------+------------------------------------- Reporter: jstolarek | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Driver | Version: 7.9 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Moderate (less | Type of failure: GHC than a day) | doesn't work at all Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Let's say I compile an empty module: {{{#!hs module Foo where }}} Now, this works: {{{ ghc-stage2 --show-iface Foo.hi }}} But this panics: {{{ ghc-stage2 Foo.hi --show-iface ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20141120 for x86_64-unknown-linux): ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20141120 for x86_64-unknown-linux): v_unsafeGlobalDynFlags: not initialised Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Does not happen with 7.8.3. I guess one of recent DynFlags changes must have caused this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9823> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9799: ghci -e panic "v_unsafeGlobalDynFlags: not initialised"
by GHC 14 Mar '15

14 Mar '15

#9799: ghci -e panic "v_unsafeGlobalDynFlags: not initialised" -------------------------------------+------------------------------------- Reporter: thomie | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: GHCi | Version: 7.9 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: GHCi crash Blocked By: | Test Case: Related Tickets: #9360 | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- {{{ $ ./ghci -e '2 + 2' ghc: panic! (the 'impossible' happened) (GHC version 7.9.20141108 for x86_64-unknown-linux): ghc: panic! (the 'impossible' happened) (GHC version 7.9.20141108 for x86_64-unknown-linux): v_unsafeGlobalDynFlags: not initialised Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} The actual expression does not matter, using `''` yields the same result. This bug does is not present in 7.8.3. See also #9360 for a feature request concerning `ghci -e`. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9799> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5539: GHC panic - Simplifier ticks exhausted
by GHC 13 Mar '15

13 Mar '15

#5539: GHC panic - Simplifier ticks exhausted -------------------------------------+------------------------------------- Reporter: hvr | Owner: simonpj Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.3 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Compile-time | (amd64) crash | Test Case: Blocked By: | Blocking: Related Tickets: #8613, #9070, | Differential Revisions: #8319 | -------------------------------------+------------------------------------- Changes (by thomie): * related: => #8613, #9070, #8319 Comment: The examples from comment:45, comment:47 and comment:53 all compile on Linux with 7.8.4 and 7.10.1. The example from comment:34 still fails (run `cabal install vector-algorithms` first): {{{ module T5539 where import qualified Data.Vector.Algorithms.Intro as I import qualified Data.Vector.Generic as G partialSort :: (G.Vector v e, Ord e) => Int -> v e -> v e partialSort k = G.modify (\a -> I.partialSort a k) }}} Note that the `vector` package has received workarounds. See comments starting from comment:28. Related tickets from [wiki:Status/SLPJ-Tickets]: #8613, #9070, #8319: simplifier ticks exhausted (there are others). -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5539#comment:60> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5539: GHC panic - Simplifier ticks exhausted
by GHC 13 Mar '15

13 Mar '15

#5539: GHC panic - Simplifier ticks exhausted -------------------------------------+------------------------------------- Reporter: hvr | Owner: simonpj Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.3 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Compile-time | (amd64) crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: -------------------------------------+------------------------------------- Changes (by George): * cc: george.colpitts@… (added) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5539#comment:59> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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