February 2014 - ghc-tickets

Re: [GHC] #3034: divInt# floated into a position which leads to low arity
by GHC 14 Feb '14

14 Feb '14

#3034: divInt# floated into a position which leads to low arity --------------------------------------------+------------------------------ Reporter: batterseapower | Owner: Type: bug | Status: new Priority: lowest | Milestone: 7.6.2 Component: Compiler | Version: 6.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime performance bug | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by simonpj): Might be worth trying making `primOpIsCheap` be true more often. Perhaps always true. Perhaps only if not out-of-line. Or perhaps a new property. But we think it ''can'' be true of primops that can fail (like division), especially in lazy contexts like this one. Simon -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3034#comment:13> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5682: Properly parse promoted data constructor operators
by GHC 13 Feb '14

13 Feb '14

#5682: Properly parse promoted data constructor operators -------------------------------------+------------------------------------- Reporter: lunaris | Owner: Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc1 (Parser) | Keywords: PolyKinds, ghc- Resolution: | kinds Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: GHC rejects | Difficulty: Unknown valid program | Blocked By: Test Case: | Related Tickets: #8486 parser/should_compile/T5682 | Blocking: | -------------------------------------+------------------------------------- Changes (by goldfire): * version: 7.3 => 7.8.1-rc1 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5682#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5682: Properly parse promoted data constructor operators
by GHC 13 Feb '14

13 Feb '14

#5682: Properly parse promoted data constructor operators -------------------------------------+------------------------------------- Reporter: lunaris | Owner: Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.3 (Parser) | Keywords: PolyKinds, ghc- Resolution: | kinds Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: GHC rejects | Difficulty: Unknown valid program | Blocked By: Test Case: | Related Tickets: #8486 parser/should_compile/T5682 | Blocking: | -------------------------------------+------------------------------------- Changes (by goldfire): * testcase: => parser/should_compile/T5682 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5682#comment:13> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5682: Properly parse promoted data constructor operators
by GHC 13 Feb '14

13 Feb '14

#5682: Properly parse promoted data constructor operators -------------------------------------+------------------------------------- Reporter: lunaris | Owner: Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.3 (Parser) | Keywords: PolyKinds, ghc- Resolution: | kinds Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: GHC rejects | Difficulty: Unknown valid program | Blocked By: Test Case: | Related Tickets: #8486 Blocking: | -------------------------------------+------------------------------------- Changes (by goldfire): * status: new => merge * milestone: 7.6.2 => 7.8.1 Comment: All set here -- I see no reason not to merge. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5682#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5682: Properly parse promoted data constructor operators
by GHC 13 Feb '14

13 Feb '14

#5682: Properly parse promoted data constructor operators -------------------------------------+------------------------------------- Reporter: lunaris | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.6.2 Component: Compiler | Version: 7.3 (Parser) | Keywords: PolyKinds, ghc- Resolution: | kinds Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: GHC rejects | Difficulty: Unknown valid program | Blocked By: Test Case: | Related Tickets: #8486 Blocking: | -------------------------------------+------------------------------------- Comment (by Richard Eisenberg <eir@…>): In [changeset:"473f12a3be27a00b035f1fdc7050a0ff31bf12ff/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="473f12a3be27a00b035f1fdc7050a0ff31bf12ff" Fix #5682. Now, '(:) parses. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5682#comment:11> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8777: Ghc crashes when compiling happstack-server on ubuntu-docker
by GHC 13 Feb '14

13 Feb '14

#8777: Ghc crashes when compiling happstack-server on ubuntu-docker ------------------------------------+------------------------------------- Reporter: timthelion | Owner: Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.4.1 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- I am trying to install a package that requires happstack on docker. I recieved the following error: {{{ src/Happstack/Server/Internal/Socket.hs:61:7:ghc: panic! (the 'impossible' happened) (GHC version 7.4.1 for x86_64-unknown-linux): Can't happen: pprExp (CompExp []) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} It appears I am not the first to receive this error as I found the following paste on lpaste: http://lpaste.net/report/99343 This bug is hard to reproduce. I tried making a minimal case for it in which only haskell-platform was installed. In the minimal case, ghc DOES NOT crash. This works: {{{ FROM ubuntu RUN apt-get update RUN apt-get install -y haskell-platform RUN cabal update RUN cabal install --global happstack-server-7.3.3 }}} However, if you run the following docker file, ghc will crash: {{{ FROM ubuntu RUN apt-get update RUN apt-get install -y haskell-platform git libghc-terminfo-dev libghc- haskeline-dev RUN cabal update RUN git clone --branch dev https://github.com/evancz/Elm.git RUN git clone --branch dev https://github.com/evancz/elm-repl.git RUN git clone https://github.com/evancz/elm-get.git RUN cd Elm; git checkout a815b2fbd00e76c0109b1ab916fe5d0eb184648c RUN cd elm-repl; git checkout 6ab74981363e8e7fabc05083539891568e3c4f17 RUN cd elm-get ; git checkout c67a8ba285f6bfde0a520da1552c4c3443cfab8e RUN cabal install --global Elm elm-repl elm-get Elm/server }}} Crashes with attached output. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8777> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8771: ASSERT unexpanded in compiler/coreSyn/CoreSubst.lhs
by GHC 13 Feb '14

13 Feb '14

#8771: ASSERT unexpanded in compiler/coreSyn/CoreSubst.lhs -------------------------------------+------------------------------------- Reporter: jkarni | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Keywords: | Operating System: MacOS X Architecture: Unknown/Multiple | Type of failure: Building GHC Difficulty: Easy (less than 1 | failed hour) | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- An ASSERT macro in compiler/coreSyn/CoreSubst.lhs isn't being expanded because of a space before the parens. The error: {{{ make -j3 ... "/usr/local/bin/ghc" -hisuf hi -osuf o -hcsuf hc -static -H32m -O -Werror -Wall -H64m -O0 -package-db libraries/bootstrapping.conf -package-name ghc-7.9 -hide-all-packages -i -icompiler/basicTypes -icompiler/cmm -icompiler/codeGen -icompiler/coreSyn -icompiler/deSugar -icompiler/ghci -icompiler/hsSyn -icompiler/iface -icompiler/llvmGen -icompiler/main -icompiler/nativeGen -icompiler/parser -icompiler/prelude -icompiler/profiling -icompiler/rename -icompiler/simplCore -icompiler/simplStg -icompiler/specialise -icompiler/stgSyn -icompiler/stranal -icompiler/typecheck -icompiler/types -icompiler/utils -icompiler/vectorise -icompiler/stage1/build -icompiler/stage1/build/autogen -Icompiler/stage1/build -Icompiler/stage1/build/autogen -Icompiler/. -Icompiler/parser -Icompiler/utils -Icompiler/stage1 -optP-include -optPcompiler/stage1/build/autogen/cabal_macros.h -package Cabal-1.18.1.3 -package array-0.4.0.1 -package base-4.6.0.1 -package bin-package- db-0.0.0.0 -package bytestring-0.10.0.2 -package containers-0.5.0.0 -package directory-1.2.0.1 -package filepath-1.3.0.1 -package hoopl-3.10.0.0 -package hpc-0.6.0.1 -package process-1.1.0.2 -package time-1.4.0.1 -package transformers-0.3.0.0 -package unix-2.6.0.1 -Wall -fno-warn-name-shadowing -XHaskell98 -XCPP -XMagicHash -XUnboxedTuples -XPatternGuards -XForeignFunctionInterface -XEmptyDataDecls -XTypeSynonymInstances -XMultiParamTypeClasses -XFlexibleInstances -XRankNTypes -XScopedTypeVariables -XDeriveDataTypeable -XBangPatterns -XNondecreasingIndentation -DSTAGE=1 -fwarn-tabs -O -no-user-package-db -rtsopts -odir compiler/stage1/build -hidir compiler/stage1/build -stubdir compiler/stage1/build -c compiler/coreSyn/CoreSubst.lhs -o compiler/stage1/build/CoreSubst.o compiler/coreSyn/CoreSubst.lhs:1360:7: Not in scope: data constructor `ASSERT' make[1]: *** [compiler/stage1/build/CoreSubst.o] Error 1 make: *** [all] Error 2 }}} /usr/local/bin/ghc is version 7.6.3. I'm building HEAD, which is at commit 5d04603b33d285565774, though a27b2985511800fa3b740fef82 (HEAD~2) introduced the code in question. This is, I'm pretty sure, literally a one character (and a whitespace, at that) fix. Attached is the patch. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8771> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8784: Makefile missing a dependency
by GHC 13 Feb '14

13 Feb '14

#8784: Makefile missing a dependency ------------------------------------+------------------------------------- Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 7.9 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- I updated from 8e303d7 (full built, using `devel2`) to 3477216. My build (started with plain `make`) then died with {{{ HC [stage 0] ghc/stage1/build/tmp/ghc-stage1 Undefined symbols for architecture x86_64: "_ghczm7zi9_CallArity_callArityAnalProgram_closure", referenced from: _r9qt_srt in libHSghc-7.9.a(SimplCore.o) _r9qv_srt in libHSghc-7.9.a(SimplCore.o) "_ghczm7zi9_CallArity_callArityAnalProgram_info", referenced from: _saVG_info in libHSghc-7.9.a(SimplCore.o) ld: symbol(s) not found for architecture x86_64 }}} I was able to fix the problem with a `make maintainer-clean`, but the make system should be able to deal with this I think. In general, I've found that I need to resort to `make maintainer-clean` more often, but that's purely anecdotal and possibly not helpful. I'm on Mac OS 10.8.5, Xcode 4. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8784> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7655: 7.6.2 Segmentation Fault/Bus Error in large exponentation
by GHC 13 Feb '14

13 Feb '14

#7655: 7.6.2 Segmentation Fault/Bus Error in large exponentation -------------------------------+---------------------------------- Reporter: Doug310 | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.2 Component: GHCi | Version: 7.8.1-rc1 Resolution: | Keywords: exponentiation Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------+---------------------------------- Changes (by thoughtpolice): * milestone: 7.8.1 => 7.8.2 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7655#comment:25> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7602: Threaded RTS performing badly on recent OS X (10.8?)
by GHC 13 Feb '14

13 Feb '14

#7602: Threaded RTS performing badly on recent OS X (10.8?) -----------------------------------+---------------------------------- Reporter: simonmar | Owner: thoughtpolice Type: bug | Status: new Priority: highest | Milestone: 7.8.2 Component: Runtime System | Version: Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 7678 Blocking: | Related Tickets: -----------------------------------+---------------------------------- Changes (by thoughtpolice): * version: 7.8.1-rc1 => * milestone: 7.8.1 => 7.8.2 Comment: I'm punting this to 7.8.2. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7602#comment:37> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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