March 2014 - ghc-tickets

Re: [GHC] #5925: Add inline version of newArray#
by GHC 06 Mar '14

06 Mar '14

#5925: Add inline version of newArray# -------------------------------------+------------------------------------ Reporter: tibbe | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.6.2 Component: Compiler | Version: 7.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 4258 Blocking: | Related Tickets: -------------------------------------+------------------------------------ Changes (by jberryman): * cc: brandon.m.simmons@… (added) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5925#comment:11> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3693: Show stack traces
by GHC 06 Mar '14

06 Mar '14

#3693: Show stack traces -------------------------------------+------------------------------------ Reporter: jpet | Owner: Tarrasch Type: feature request | Status: new Priority: normal | Milestone: 7.10.1 Component: Runtime System | Version: 6.10.4 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by simonpj): Simon M and I took a look today. We added a few notes to the github thing https://github.com/scpmw/ghc/commit/d233ea4da0a5725d4d29a3fb68b9b8f7c9bc6d32 #diff-8b5b79c6cb1af2b387fa2d814cd0d3f6R1638 The major stumbling block is giving a really clear description of what each of the various predicates on ticks means: `tickishScoped`, `tickishSoftScoped`, `tickishCounts`, `tickishIsCode` etc. We might want to rename some of them. Eg `tickisScoped` and `tickishSoftScoped` might be replaced by `canFloatCodeInsideThisTick` and `canFloatCodeOutsideThisTick`, perhaps. Each call site has asks a question about the equivalence of two pieces of code, and the predicates should probably have an example drawn from every call site. That might make the correct generalisation clear. Simon -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3693#comment:67> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #8024: Dynamic linking not working on PowerPC Linux.
by GHC 05 Mar '14

05 Mar '14

#8024: Dynamic linking not working on PowerPC Linux. ----------------------------------------+--------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Linux | Architecture: powerpc Type of failure: Building GHC failed | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ----------------------------------------+--------------------------- Comment (by erikd): In mk/config.mk.in tried changing {{{ PIC = pic }}} to {{{ PIC = PIC }}} ran the whole process from `perl boot` onwards and that didn't help. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8024#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8846: GHC panic with Template Haskell
by GHC 05 Mar '14

05 Mar '14

#8846: GHC panic with Template Haskell ----------------------------------+--------------------------------------- Reporter: Gothmog | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Linux Architecture: x86_64 (amd64) | Type of failure: Compile-time crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+--------------------------------------- I get a panic when compiling the attached files with "ghc --make test": ghc: panic! (the 'impossible' happened) (GHC version 7.6.3 for x86_64-unknown-linux): nameModule a{v a14p} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8846> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8820: 7.8 RC1 unregisterised fails selfbootstrap on 64 bit Linux
by GHC 04 Mar '14

04 Mar '14

#8820: 7.8 RC1 unregisterised fails selfbootstrap on 64 bit Linux ----------------------------------+---------------------------------------- Reporter: trommler | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.1-rc1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Building GHC failed Unknown/Multiple | Test Case: Difficulty: Unknown | Blocking: Blocked By: | Related Tickets: #8819 | ----------------------------------+---------------------------------------- Selfbootstrap of an unregisterised ghc fails on 64 bit PowerPC and AMD but not on 32 bit (PowerPC or Intel): {{{ [10021s] "inplace/bin/ghc-stage1" -static -H32m -O -optc-mminimal-toc -optc-fno-builtin -Iincludes -Iincludes/dist -Iincludes/dist- derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -package-name rts -optc-DNOSMP -dcmm-lint -i -irts -irts/dist/build -irts/dist/build/autogen -Irts/dist/build -Irts/dist/build/autogen -O2 -c rts/StgStartup.cmm -o rts/dist/build/StgStartup.o [10021s] ghc-stage1: panic! (the 'impossible' happened) [10021s] (GHC version 7.8.0.20140220 for powerpc64-unknown-linux): [10021s] no ppt [10021s] ct ct: _cj::P64 = P64[(old + 16)]; [10021s] _ck::P64 = R1; [10021s] goto cl; [10021s] [10021s] Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} I disabled gcc's built in functions through {{{-fno-builtin}}} which got rid of a load of warnings (incompatible types for the built-ins) but still fails as shown above. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8820> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8847: Int64 ^ Int64 broken by optimization on SPARC
by GHC 04 Mar '14

04 Mar '14

#8847: Int64 ^ Int64 broken by optimization on SPARC --------------------------+------------------------------------------------ Reporter: | Owner: kgardas | Status: new Type: bug | Milestone: Priority: normal | Version: Component: | Operating System: Solaris Compiler (NCG) | Type of failure: Incorrect result at runtime Keywords: | Test Case: Architecture: sparc | Blocking: Difficulty: | Unknown | Blocked By: | Related Tickets: | --------------------------+------------------------------------------------ The T7507 test is broken on SPARC NCG, I've more simplified it to {{{ module Main where import Data.Int main = print ( ( 2 :: Int64 ) ^ ( 6 :: Int64 ) ) }}} it does not matter if it's run with two Int64 or just with one: {{{ main = print ( 2 ^ 6 :: Int64 ) }}} the result with -O is still 0. The result without -O is correct. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8847> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8845: weight lose tips 2071
by GHC 04 Mar '14

04 Mar '14

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Re: [GHC] #7452: [GNU gold] ld: error: cannot find [...]/Types__1.o
by GHC 04 Mar '14

04 Mar '14

#7452: [GNU gold] ld: error: cannot find [...]/Types__1.o ----------------------------------------+---------------------------------- Reporter: mrothe | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: Build System | Version: 7.6.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Building GHC failed | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ----------------------------------------+---------------------------------- Comment (by octoploid): See: https://sourceware.org/bugzilla/show_bug.cgi?id=16341 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7452#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8837: GHC 7.8.1-rc2 requires /usr/local/lib/libgmp10.10.dylib
by GHC 03 Mar '14

03 Mar '14

#8837: GHC 7.8.1-rc2 requires /usr/local/lib/libgmp10.10.dylib --------------------------------+------------------------------------------ Reporter: awick | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Keywords: | Operating System: MacOS X Architecture: x86_64 | Type of failure: Installing GHC failed (amd64) | Test Case: Difficulty: Unknown | Blocking: Blocked By: | Related Tickets: | --------------------------------+------------------------------------------ It looks like a homebrew (or something else?) dependency snuck into the RC2 build: {{{ % ./configure --prefix=/Users/awick/tools/ghc7.8.0 checking for path to top of build tree... dyld: Library not loaded: /usr/local/lib/libgmp.10.dylib Referenced from: /Users/awick/tools/ghc-7.8.0.20140228/utils/ghc-pwd /dist-install/build/tmp/ghc-pwd Reason: image not found configure: error: cannot determine current directory }}} As not all of us use homebrew, it'd be lovely if the binary installer only required base Mac libraries to be installed rather than homebrew/macports/whatever. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8837> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8838: Allow running bash shell commands
by GHC 03 Mar '14

03 Mar '14

#8838: Allow running bash shell commands --------------------------+------------------------------------------------ Reporter: | Owner: jstolarek | Status: new Type: | Milestone: 7.10.1 feature request | Version: 7.8.1-rc2 Priority: normal | Operating System: Linux Component: | Type of failure: Incorrect result at runtime libraries/process | Test Case: Keywords: | Blocking: Architecture: | Unknown/Multiple | Difficulty: | Unknown | Blocked By: | Related Tickets: #8802 | --------------------------+------------------------------------------------ Current implementation of `process` library has limited usability. `CreateProcess` record stores `CmdSpec` field, which is either a `RawCommand` or `ShellCommand`. The problem is that: * `RawCommand` command quotes and escapes the command parameters * `ShellCommand` does no escaping but it runs command in `sh` shell Corollary: there is no way to run `bash` command with unescaped parameters. As a result there is no way to run this command (and many others): {{{ diff <(echo $ENV_FOO) <(echo $ENV_BAR) }}} Running it as a `RawCommand` (using `proc` function) fails because command line parameters are escaped and become incorrect. Running it as `ShellCommand` (using `shell` function) fails because this is not valid `sh` syntax. I propose to create function that allows user to run `bash` commands without escaping the parameters (or even better, run any shell the user wants). In other words this program: {{{ import System.Exit import System.Process main :: IO () main = do (_, _, _, pid) <- createProcess (SOME_NEW_FUNCTION "diff" ["<(echo $FOO)", "<(echo $BAR)"] ) { env = Just [("FOO","Foo"),("BAR","Bar")] } ecode <- waitForProcess pid case ecode of ExitSuccess -> putStrLn "All’s right with the world!" ExitFailure _ -> putStrLn ":-(" }}} should produce: {{{ 1c1 < Foo --- > Bar }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8838> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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