September 2014 - ghc-tickets

Re: [GHC] #4092: Floating point manipulation : ulp and coerce IEEE-754 Double# into Word64#
by GHC 24 Sep '14

24 Sep '14

#4092: Floating point manipulation : ulp and coerce IEEE-754 Double# into Word64# -------------------------------------+------------------------------------- Reporter: malosh | Owner: Type: feature | Status: new request | Milestone: 7.10.1 Priority: normal | Version: 6.12.2 Component: Compiler | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by jystic): * cc: jystic@… (added) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4092#comment:18> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2496: Invalid Eq/Ord instances in Data.Version
by GHC 24 Sep '14

24 Sep '14

#2496: Invalid Eq/Ord instances in Data.Version -------------------------------------+------------------------------------- Reporter: guest | Owner: duncan Type: bug | Status: new Priority: normal | Milestone: ⊥ Component: | Version: 6.8.3 libraries/base | Keywords: Resolution: | Architecture: Unknown/Multiple Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * cc: hvr, ekmett (added) Comment: Proposal to remove versionTags: http://www.haskell.org/pipermail/libraries/2014-September/023777.html -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2496#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7913: Argument order not preserved by nubBy
by GHC 24 Sep '14

24 Sep '14

#7913: Argument order not preserved by nubBy -------------------------------------+------------------------------------- Reporter: paullik | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Prelude | Version: 7.6.3 Resolution: | Keywords: nubBy Operating System: Linux | Architecture: Unknown/Multiple Type of failure: | Difficulty: Unknown None/Unknown | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Comment (by thomie): Library proposal for the 'still easy' solution: http://www.haskell.org/pipermail/libraries/2014-September/023776.html -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7913#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9629: GHC panic while installing purescript
by GHC 24 Sep '14

24 Sep '14

#9629: GHC panic while installing purescript -------------------------------------+------------------------------------- Reporter: jlburkhead | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.4.1 Keywords: | Operating System: Linux Architecture: x86_64 (amd64) | Type of failure: Compile- Difficulty: Unknown | time crash Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- {{{ $ cabal install purescript [1 of 1] Compiling Main ( /tmp/purescript-0.5.6.2-11475/purescript-0.5.6.2/dist/setup/setup.hs, /tmp/purescript-0.5.6.2-11475/purescript-0.5.6.2/dist/setup/Main.o ) Linking /tmp/purescript-0.5.6.2-11475/purescript-0.5.6.2/dist/setup/setup ... Configuring purescript-0.5.6.2... Building purescript-0.5.6.2... Preprocessing library purescript-0.5.6.2... [ 1 of 53] Compiling Language.PureScript.Parser.State ( src/Language/PureScript/Parser/State.hs, dist/build/Language/PureScript/Parser/State.o ) ... [53 of 53] Compiling Language.PureScript ( src/Language/PureScript.hs, dist/build/Language/PureScript.o ) In-place registering purescript-0.5.6.2... Preprocessing executable 'psc' for purescript-0.5.6.2... [1 of 2] Compiling Paths_purescript ( dist/build/autogen/Paths_purescript.hs, dist/build/psc/psc- tmp/Paths_purescript.o ) [2 of 2] Compiling Main ( psc/Main.hs, dist/build/psc/psc- tmp/Main.o ) ghc: panic! (the 'impossible' happened) (GHC version 7.4.1 for x86_64-unknown-linux): tyThingTyCon Data constructor `purescript-0.5.6.2:Language.PureScript.Options.Compile{d r21e}' Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug Failed to install purescript-0.5.6.2 cabal: Error: some packages failed to install: purescript-0.5.6.2 failed during the building phase. The exception was: ExitFailure 1 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9629> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2614: Enumeration of values for `Sys.Info.os`, `Sys.Info.arch`
by GHC 24 Sep '14

24 Sep '14

#2614: Enumeration of values for `Sys.Info.os`, `Sys.Info.arch` -------------------------------------+------------------------------------- Reporter: jsnx | Owner: mjg Type: feature | Status: new request | Milestone: 7.10.1 Priority: low | Version: 6.8.3 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Unknown Operating System: | Blocked By: Unknown/Multiple | Related Tickets: Type of failure: | None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by thomie): * cc: hvr, ekmett (added) Comment: Link to [https://github.com/haskell/cabal/blob/master/Cabal/Distribution/System.hs Distribution.System]. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2614#comment:18> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2034: In FilePath, current directory should be ".", not ""
by GHC 23 Sep '14

23 Sep '14

#2034: In FilePath, current directory should be ".", not "" --------------------------------------+--------------------------------- Reporter: igloo | Owner: neil Type: proposal | Status: closed Priority: normal | Milestone: Not GHC Component: libraries (other) | Version: 6.8.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | --------------------------------------+--------------------------------- Comment (by Austin Seipp <austin@…>): In [changeset:"2a743bbddd4de41a77af9b83ec4720cd013292cf/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="2a743bbddd4de41a77af9b83ec4720cd013292cf" Delete hack when takeDirectory returns "" Summary: Since commits 8fe1f8 and bb6731 in the filepath packages (ticket #2034, closed in 2010), takeDirectory "foo" returns ".", and not "", so this check is no longer needed. Other commits: * Remove trailing whitespace * Update comments for #2278 Test Plan: harbormaster Reviewers: austin Reviewed By: austin Subscribers: simonmar, ezyang, carter Differential Revision: https://phabricator.haskell.org/D213 GHC Trac Issues: #2034 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2034#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2278: Inconsistent behaviour between -odir and -hidir options
by GHC 23 Sep '14

23 Sep '14

#2278: Inconsistent behaviour between -odir and -hidir options -----------------------------+---------------------------- Reporter: guest | Owner: simonmar Type: bug | Status: closed Priority: normal | Milestone: 6.10 branch Component: Compiler | Version: 6.8.2 Resolution: fixed | Keywords: Operating System: Windows | Architecture: x86 Difficulty: Unknown | Test Case: -----------------------------+---------------------------- Comment (by Austin Seipp <austin@…>): In [changeset:"2a743bbddd4de41a77af9b83ec4720cd013292cf/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="2a743bbddd4de41a77af9b83ec4720cd013292cf" Delete hack when takeDirectory returns "" Summary: Since commits 8fe1f8 and bb6731 in the filepath packages (ticket #2034, closed in 2010), takeDirectory "foo" returns ".", and not "", so this check is no longer needed. Other commits: * Remove trailing whitespace * Update comments for #2278 Test Plan: harbormaster Reviewers: austin Reviewed By: austin Subscribers: simonmar, ezyang, carter Differential Revision: https://phabricator.haskell.org/D213 GHC Trac Issues: #2034 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2278#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8836: ghc 7.6.3 (Linux) hangs on -O2
by GHC 23 Sep '14

23 Sep '14

#8836: ghc 7.6.3 (Linux) hangs on -O2 ------------------------------+-------------------------------------------- Reporter: tsuraan | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: GHC doesn't work at all Unknown/Multiple | Test Case: Difficulty: Unknown | Blocking: Blocked By: | Related Tickets: | ------------------------------+-------------------------------------------- I haven't had any luck finding a minimal test case for this, but the following replicates the issue on my two Linux machines running ghc 7.6.3: git clone https://github.com/tsuraan/optimal-blocks cd optimal-blocks git checkout bceee69f9f03d2e559f96cdf58412ada09c96a8c cabal sandbox init cabal install --only-dependencies cabal configure cabal build Cabal build will successfully build Algorithm.OptimalBlocks.SipHash and Algorithm.OptimalBlocks.BuzzHash, and it will attempt to build Algorithm.OptimalBlocks, but it will hang forever, using 100% of a single core. I have no idea how to debug this, but in src/Algorithm/OptimalBlocks.hs, if you replace the "in Blocks (reverse rlist) end" with "in Blocks [] bs", it will compile. Also, if that same file starts with the line "{-# OPTIONS_GHC -O1 #-}" it will compile. This also happens on my Mac running OSX 10.8.5 and ghc 7.4.2 without llvm; I have to tweak the .cabal file a little to drop the lower bound on base and to get rid of the "-fllvm" flag, but if I do that I see the exact same behaviour. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8836> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3231: Permission denied error with runProcess/openFile
by GHC 23 Sep '14

23 Sep '14

#3231: Permission denied error with runProcess/openFile -------------------------------------+------------------------------------- Reporter: | Owner: simonmar NeilMitchell | Status: new Type: bug | Milestone: 7.10.1 Priority: normal | Version: 6.10.4 Component: | Keywords: libraries/base | Architecture: Unknown/Multiple Resolution: | Difficulty: Unknown Operating System: Windows | Blocked By: Type of failure: | Related Tickets: None/Unknown | Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by yugr): * cc: tetra2005@…, hvr, ekmett (added) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3231#comment:49> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9565: T3500b exhaust simplifier ticks (loops?) on WAY=optasm
by GHC 23 Sep '14

23 Sep '14

#9565: T3500b exhaust simplifier ticks (loops?) on WAY=optasm -------------------------------------+------------------------------------- Reporter: slyfox | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Keywords: | Operating System: Architecture: x86_64 (amd64) | Unknown/Multiple Difficulty: Unknown | Type of failure: Compile- Blocked By: | time crash Related Tickets: | Test Case: T3500b | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- {{{ $ make fulltest TEST="T3500b" WAY=optasm =====> T3500b(optasm) 3767 of 4101 [0, 0, 0] cd ./typecheck/should_run && '/home/slyfox/dev/git/ghc- validate/inplace/bin/ghc-stage2' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-db -rtsopts -fno-ghci-history -o T3500b T3500b.hs -O -fasm >T3500b.comp.stderr 2>&1 Compile failed (status 256) errors were: [1 of 1] Compiling Main ( T3500b.hs, T3500b.o ) ghc-stage2: panic! (the 'impossible' happened) (GHC version 7.9.20140907 for x86_64-unknown-linux): Simplifier ticks exhausted When trying RuleFired foldr/augment To increase the limit, use -fsimpl-tick-factor=N (default 100) If you need to do this, let GHC HQ know, and what factor you needed To see detailed counts use -ddump-simpl-stats Total ticks: 12441 Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Attempt to increase '''-fsimpl-tick-factor''' does not help copiling sample. Looks like infinite inlining pass. The test source itself: {{{#!hs {-# LANGUAGE TypeFamilies, FlexibleContexts, UndecidableInstances #-} module Main where newtype Mu f = Mu (f (Mu f)) type family Id m type instance Id m = m instance Show (Id (f (Mu f))) => Show (Mu f) where show (Mu f) = show f showMu :: Mu (Either ()) -> String showMu = show item :: Mu (Either ()) item = Mu (Right (Mu (Left ()))) main = print (showMu item) }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9565> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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