April 2013 - ghc-tickets

Re: [GHC] #7411: Exceptions are optimized away in certain situations
by GHC 12 Apr '13

12 Apr '13

#7411: Exceptions are optimized away in certain situations ---------------------------------------------------+------------------------ Reporter: SimonHengel | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: Compiler | Version: 7.6.1 Keywords: seq, deepseq, evaluate, exceptions | Os: Linux Architecture: x86_64 (amd64) | Failure: Incorrect result at runtime Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------------------------+------------------------ Changes (by igloo): * priority: normal => high * difficulty: => Unknown * milestone: => 7.8.1 Comment: Thanks for the report. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7411#comment:1> 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 12 Apr '13

12 Apr '13

#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: infoneeded Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.6.1 Keywords: deriving | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: GHC rejects valid program Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by igloo): * status: new => infoneeded * milestone: => 7.8.1 Comment: jpbernardy, have you got an example of why this is useful please? Did you run into this in a real program? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7401#comment:4> 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 12 Apr '13

12 Apr '13

#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: Component: Compiler | Version: 7.6.1 Keywords: deriving | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: GHC rejects valid program Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by igloo): * difficulty: => Unknown Old description: > On a "phantom datatype" D, one gets the message: > > Can't make a derived instance of `Eq D': > `D' must have at least one data constructor > > However there is a trivial, correct instance of Eq D: > > instance Eq D where > (==) = undefined New description: On a "phantom datatype" D, one gets the message: {{{ Can't make a derived instance of `Eq D': `D' must have at least one data constructor }}} However there is a trivial, correct instance of Eq D: {{{ instance Eq D where (==) = undefined }}} -- -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7401#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7399: Test Posix004 fails in test-suite
by GHC 12 Apr '13

12 Apr '13

#7399: Test Posix004 fails in test-suite -------------------------------+-------------------------------------------- Reporter: paulh | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: libraries/unix | Version: 7.6.1 Keywords: | Os: Linux Architecture: x86_64 (amd64) | Failure: Incorrect result at runtime Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | -------------------------------+-------------------------------------------- Changes (by igloo): * component: Compiler => libraries/unix * milestone: => 7.8.1 Comment: Thanks for the report. I can't reproduce it on squeeze, but haven't tried on wheezy. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7399#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7399: Test Posix004 fails in test-suite
by GHC 12 Apr '13

12 Apr '13

#7399: Test Posix004 fails in test-suite -------------------------------+-------------------------------------------- Reporter: paulh | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Keywords: | Os: Linux Architecture: x86_64 (amd64) | Failure: Incorrect result at runtime Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | -------------------------------+-------------------------------------------- Changes (by igloo): * difficulty: => Unknown Old description: > After a standard build of ghc-7.6.1 on debian wheezy, the test-suite > fails on the test posix004. > > The error given is: > > Wrong exit code (expected 0 , actual 1 ) > Stdout: > > Stderr: > posix004: unexpected termination cause > > *** unexpected failure for posix004(normal) New description: After a standard build of ghc-7.6.1 on debian wheezy, the test-suite fails on the test posix004. The error given is: {{{ Wrong exit code (expected 0 , actual 1 ) Stdout: Stderr: posix004: unexpected termination cause *** unexpected failure for posix004(normal) }}} -- -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7399#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7398: RULES don't apply to a newtype constructor
by GHC 12 Apr '13

12 Apr '13

#7398: RULES don't apply to a newtype constructor ---------------------------------+------------------------------------------ Reporter: shachaf | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: Incorrect result at runtime Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by igloo): * difficulty: => Unknown * milestone: => 7.8.1 Comment: Thanks for the report. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7398#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7396: Improve "parse error on input `$'" when TemplateHaskell PRAGMA not declared
by GHC 12 Apr '13

12 Apr '13

#7396: Improve "parse error on input `$'" when TemplateHaskell PRAGMA not declared ----------------------------------+----------------------------------------- Reporter: ydewit | Owner: Type: feature request | Status: closed Priority: normal | Milestone: Component: Template Haskell | Version: 7.4.2 Resolution: wontfix | Keywords: Os: MacOS X | Architecture: x86 Failure: Building GHC failed | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: ----------------------------------+----------------------------------------- Changes (by igloo): * status: new => closed * resolution: => wontfix Comment: I don't think that this would be simple enough that it would be worth doing, so I'll close the ticket. Of course, if anyone does decide to take it on and make a patch, please feel free to reopen it. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7396#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7395: DefaultSignatures conflict with default implementations
by GHC 12 Apr '13

12 Apr '13

#7395: DefaultSignatures conflict with default implementations ----------------------------------+----------------------------------------- Reporter: cgaebel | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.6.1 Keywords: DefaultSignatures | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: GHC rejects valid program Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: 7346 | ----------------------------------+----------------------------------------- Changes (by igloo): * milestone: => 7.8.1 -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7395#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7390: Setup.hs: internal error: stg_ap_v_ret (MacOS)
by GHC 12 Apr '13

12 Apr '13

#7390: Setup.hs: internal error: stg_ap_v_ret (MacOS) -------------------------------+-------------------------------------------- Reporter: guest | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.4.1 Resolution: worksforme | Keywords: Os: Unknown/Multiple | Architecture: x86_64 (amd64) Failure: None/Unknown | Difficulty: Unknown Testcase: | Blockedby: Blocking: | Related: -------------------------------+-------------------------------------------- Changes (by igloo): * status: new => closed * resolution: => worksforme Comment: Thanks for the report. However, no-one else has reported this, so my suspicion is that it is a system-specific problem, perhaps dodgy hardware. Because of this, and because we have no way to reproduce the problem, I'm closing this ticket. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7390#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7390: Setup.hs: internal error: stg_ap_v_ret (MacOS)
by GHC 12 Apr '13

12 Apr '13

#7390: Setup.hs: internal error: stg_ap_v_ret (MacOS) -------------------------------+-------------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.4.1 Keywords: | Os: Unknown/Multiple Architecture: x86_64 (amd64) | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | -------------------------------+-------------------------------------------- Changes (by igloo): * difficulty: => Unknown Old description: > I was trying to build some haskell. Here's what happened: > > $ runhaskell Setup.hs configure > Configuring c0c-3.9... > Setup.hs: At least the following dependencies are missing: > mtl -any, syb -any > $ runhaskell Setup.hs configure > $ runhaskell Setup.hs configure > $ runhaskell Setup.hs configure > Configuring c0c-3.9... > Setup.hs: At least the following dependencies are missing: > mtl -any, syb -any > $ runhaskell Setup.hs configure > $ runhaskell Setup.hs configure > $ runhaskell Setup.hs build > Setup.hs: Run the 'configure' command first. > $ runhaskell Setup.hs configure > $ runhaskell Setup.hs build > Setup.hs: internal error: stg_ap_v_ret > (GHC version 7.4.1 for x86_64_apple_darwin) > Please report this as a GHC bug: > http://www.haskell.org/ghc/reportabug > $ runhaskell Setup.hs configure > $ runhaskell Setup.hs build > $ > > In addition to the failure which it told me to report, it appears to be > sometimes unable to locate the mtl and syb packages which I installed. I > don't know if these are related. My platform is MacOS 10.6 on which I > installed the tarball of ghc with gcc47 as my default gcc and haskell- > platform version 2012.2.0.0 (built from source). New description: I was trying to build some haskell. Here's what happened: {{{ $ runhaskell Setup.hs configure Configuring c0c-3.9... Setup.hs: At least the following dependencies are missing: mtl -any, syb -any $ runhaskell Setup.hs configure $ runhaskell Setup.hs configure $ runhaskell Setup.hs configure Configuring c0c-3.9... Setup.hs: At least the following dependencies are missing: mtl -any, syb -any $ runhaskell Setup.hs configure $ runhaskell Setup.hs configure $ runhaskell Setup.hs build Setup.hs: Run the 'configure' command first. $ runhaskell Setup.hs configure $ runhaskell Setup.hs build Setup.hs: internal error: stg_ap_v_ret (GHC version 7.4.1 for x86_64_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug $ runhaskell Setup.hs configure $ runhaskell Setup.hs build $ }}} In addition to the failure which it told me to report, it appears to be sometimes unable to locate the mtl and syb packages which I installed. I don't know if these are related. My platform is MacOS 10.6 on which I installed the tarball of ghc with gcc47 as my default gcc and haskell- platform version 2012.2.0.0 (built from source). -- -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7390#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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