April 2014 - ghc-tickets

Re: [GHC] #7273: Binary size increase in nofib/grep between 7.6.1 and HEAD
by GHC 28 Apr '14

28 Apr '14

#7273: Binary size increase in nofib/grep between 7.6.1 and HEAD -------------------------------------+------------------------------------ Reporter: simonmar | Owner: Type: bug | Status: new Priority: high | Milestone: 7.10.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Changes (by thoughtpolice): * milestone: 7.8.3 => 7.10.1 Comment: Not happening in the 7.8 window, most likely. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7273#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7143: ghc-7.6.0.20120810-x86_64-windows.exe -> ghc can't figure out LLVM version
by GHC 28 Apr '14

28 Apr '14

#7143: ghc-7.6.0.20120810-x86_64-windows.exe -> ghc can't figure out LLVM version -------------------------------------------------+------------------------- Reporter: cetinsert | Owner: Type: bug | dterei Priority: normal | Status: new Component: Compiler (LLVM) | Milestone: 7.8.3 Resolution: | Version: Operating System: Windows | 7.6.1-rc1 Type of failure: Incorrect warning at | Keywords: llvm compile-time | Architecture: Test Case: | Unknown/Multiple Blocking: | Difficulty: | Unknown | Blocked By: | Related Tickets: -------------------------------------------------+------------------------- Changes (by thoughtpolice): * priority: high => normal -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7143#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7452: [GNU gold] ld: error: cannot find [...]/Types__1.o
by GHC 28 Apr '14

28 Apr '14

#7452: [GNU gold] ld: error: cannot find [...]/Types__1.o ----------------------------------------+---------------------------------- Reporter: mrothe | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: 7.10.1 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: ----------------------------------------+---------------------------------- Changes (by thoughtpolice): * priority: high => normal * status: new => infoneeded * milestone: 7.8.3 => 7.10.1 Comment: Since this looks like a binutils bug, I'm lowering priority and moving out of 7.8.3 - can we do anything to help? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7452#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7679: Regression in -fregs-graph performance
by GHC 28 Apr '14

28 Apr '14

#7679: Regression in -fregs-graph performance --------------------------------------------+------------------------------ Reporter: simonmar | Owner: Type: bug | Status: new Priority: high | Milestone: 7.10.1 Component: Compiler (NCG) | Version: 7.6.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Runtime performance bug | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: #7192, | #8657 --------------------------------------------+------------------------------ Changes (by thoughtpolice): * milestone: 7.8.3 => 7.10.1 Comment: Let's move this to 7.10 and decide what to do then. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7679#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5019: OS X: ld: warning: could not create compact unwind for _ffi_call_unix64
by GHC 28 Apr '14

28 Apr '14

#5019: OS X: ld: warning: could not create compact unwind for _ffi_call_unix64 -------------------------------------------------+------------------------- Reporter: altaic | Owner: Type: bug | Status: Priority: high | closed Component: Compiler | Milestone: Resolution: fixed | Version: 7.1 Operating System: MacOS X | Keywords: Type of failure: Incorrect warning at | Architecture: compile-time | x86_64 (amd64) Test Case: | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: -------------------------------------------------+------------------------- Changes (by thoughtpolice): * milestone: 7.8.3 => -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5019#comment:24> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8498: gcc hardcoded in build scripts! (ignores the --with-gcc= flag in configure)
by GHC 28 Apr '14

28 Apr '14

#8498: gcc hardcoded in build scripts! (ignores the --with-gcc= flag in configure) ------------------------------------+--------------------------------- Reporter: carter | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: Compiler | Version: 7.7 Keywords: | Operating System: MacOS X Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+--------------------------------- NB: this may be a dupe of another issue, but reporting is separately for now i'm on OS X 10.8 (mountain lion) with xcode 5, ghc comit 23fb7f3b7987d7b3fa445e54680a8a00a37e714d, I've got a gcc-4.8 installed, though gcc in my path is actually clang (as is typical for xcode 5), so I configured as {{{ ./configure --with-gcc=gcc-4.8 }}} and then I noticed as i'm building, some warnings that mean clang is being called rather than gcc! heres a relevant snippet of the build transcript {{{ cp" utils/hsc2hs/template-hsc.h inplace/lib/template-hsc.h "/usr/bin/ghc" -hisuf hi -osuf o -hcsuf hc -static -H64m -O -fasm -package process -package containers -package-db libraries/bootstrapping.conf -i -iutils/deriveConstants/. -iutils/deriveConstants/dist/build -iutils/deriveConstants/dist/build/autogen -Iutils/deriveConstants/dist/build -Iutils/deriveConstants/dist/build/autogen -no-user-package-db -rtsopts -odir utils/deriveConstants/dist/build -hidir utils/deriveConstants/dist/build -stubdir utils/deriveConstants/dist/build -c utils/deriveConstants/./DeriveConstants.hs -o utils/deriveConstants/dist/build/DeriveConstants.o "inplace/bin/mkdirhier" utils/deriveConstants/dist/build/tmp//. "inplace/bin/mkdirhier" rts/dist/build//. gcc -E -m64 -undef -traditional -P -Iincludes -Iincludes/dist -Iincludes /dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Icompiler/stage1 -x c compiler/prelude/primops.txt.pp | grep -v '^#pragma GCC' > compiler/stage1/build/primops.txt compiler/prelude/primops.txt.pp:35:55: warning: missing terminating ' character [-Winvalid-pp-token] -- The default attribute values which apply if you don't specify ^ compiler/prelude/primops.txt.pp:1310:19: warning: missing terminating ' character [-Winvalid-pp-token] difference doesn't fit in an {\tt Int\#}.} ^ compiler/prelude/primops.txt.pp:1591:41: warning: missing terminating ' character [-Winvalid-pp-token] -- not really the right type, but we don't know about pairs here. The ^ compiler/prelude/primops.txt.pp:1620:15: warning: missing terminating ' character [-Winvalid-pp-token] -- but we don't want to tell the strictness ^ compiler/prelude/primops.txt.pp:1634:30: warning: missing terminating ' character [-Winvalid-pp-token] -- must be *precise* - we don't want the strictness analyser turning ^ compiler/prelude/primops.txt.pp:1690:14: warning: missing terminating ' character [-Winvalid-pp-token] -- NB: retry#'s strictness information specifies it to return bottom. ^ compiler/prelude/primops.txt.pp:1811:47: warning: missing terminating ' character [-Winvalid-pp-token] Otherwise, store value arg as {\tt MVar\#}'s new contents, and return with integer 1.} ^ compiler/prelude/primops.txt.pp:1906:21: warning: missing terminating ' character [-Winvalid-pp-token] {\tt RealWorld}; it's only used in the type system, to parameterise {\tt State\#}. } ^ compiler/prelude/primops.txt.pp:2084:67: warning: missing terminating ' character [-Winvalid-pp-token] -- why return the value? So that we can control sharing of seq'd ^ compiler/prelude/primops.txt.pp:2087:13: warning: missing terminating ' character [-Winvalid-pp-token] -- we don't want to inline x, so better to represent it as ^ compiler/prelude/primops.txt.pp:2108:48: warning: missing terminating ' character [-Winvalid-pp-token] -- `the processor containing the expression v'; it is not evaluated ^ compiler/prelude/primops.txt.pp:2206:20: warning: missing terminating ' character [-Winvalid-pp-token] {These aren't nearly as wired in as Etc...} ^ compiler/prelude/primops.txt.pp:2236:57: warning: missing terminating ' character [-Winvalid-pp-token] * It does not claim to be a {\it data} type, and that's important for ^ compiler/prelude/primops.txt.pp:2240:4: warning: missing terminating ' character [-Winvalid-pp-token] It's also used to instantiate un-constrained type variables after type ^ compiler/prelude/primops.txt.pp:2278:86: warning: missing terminating ' character [-Winvalid-pp-token] used when you want to write a program that you know is well-typed, but where Haskell's ^ compiler/prelude/primops.txt.pp:2301:28: warning: missing terminating ' character [-Winvalid-pp-token] have to do with GHC's internal representation details (for the congnoscenti, data values ^ compiler/prelude/primops.txt.pp:2307:76: warning: missing terminating ' character [-Winvalid-pp-token] -- NB. It is tempting to think that casting a value to a type that it doesn't have is safe ^ compiler/prelude/primops.txt.pp:2308:22: warning: missing terminating ' character [-Winvalid-pp-token] -- as long as you don't "do anything" with the value in its cast form, such as seq on it. This ^ compiler/prelude/primops.txt.pp:2309:7: warning: missing terminating ' character [-Winvalid-pp-token] -- isn't the case: the compiler can insert seqs itself, and if these happen at the wrong type, ^ compiler/prelude/primops.txt.pp:2344:17: warning: missing terminating ' character [-Winvalid-pp-token] the newtype's concrete type to the abstract type. But it also works in ^ compiler/prelude/primops.txt.pp:2367:67: warning: missing terminating ' character [-Winvalid-pp-token] {\tt instance Coercible b b' => Coercible (D a b c) (D a b' c')} ^ compiler/prelude/primops.txt.pp:2389:43: warning: missing terminating ' character [-Winvalid-pp-token] you need to set the role of {\tt Set}'s type parameter to Nominal. }}} notice the hard coded gcc call {{{ gcc -E -m64 -undef -traditional -P -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist- ghcconstants/header -Icompiler/stage1 -x c compiler/prelude/primops.txt.pp | grep -v '^#pragma GCC' > compiler/stage1/build/primops.txt }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8498> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] Batch modify: #7490, #8746
by GHC 28 Apr '14

28 Apr '14

Batch modification to #7490, #8746 by thoughtpolice: priority to normal milestone to 7.10.1 -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=7490%2C8746> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #8440: Get rid of the remaining static flags
by GHC 28 Apr '14

28 Apr '14

#8440: Get rid of the remaining static flags -------------------------------------+------------------------------------ Reporter: thoughtpolice | Owner: Type: task | Status: new Priority: high | Milestone: 7.10.1 Component: Compiler | Version: Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Changes (by thoughtpolice): * milestone: 7.8.3 => 7.10.1 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8440#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8303: defer StackOverflow exceptions (rather than dropping them) when exceptions are masked
by GHC 28 Apr '14

28 Apr '14

#8303: defer StackOverflow exceptions (rather than dropping them) when exceptions are masked ------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- See http://www.reddit.com/r/haskell/comments/1luan1/strange_io_sequence_behavio… for a very simple program (`main'`) that accidentally evades the stack size limit, running to completion even though it has allocated hundreds of megabytes of stack chunks, and [http://www.reddit.com/r/haskell/comments/1luan1/strange_io_sequence_behavio… my comment] for an explanation of this behavior. ryani suggested that when a thread exceeds its stack limit but it is currently blocking exceptions, the RTS shouldn't simply drop the `StackOverflow` exception, but rather deliver it when the `mask` operation completes. That sounds sensible to me and it would give a nice guarantee that when any individual `mask` operation uses a small amount of stack, the stack size limit is approximately enforced. (I know that the default stack size limit may go away or essentially go away, but it can still be nice when developing to use a small stack size limit, so that one's system isn't run into the ground by infinite recursion quickly gobbling up tons of memory.) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8303> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7651: Buiding GHC with parallel IO manager freezes on Mac (not on FreeBSD)
by GHC 28 Apr '14

28 Apr '14

#7651: Buiding GHC with parallel IO manager freezes on Mac (not on FreeBSD) ----------------------------------------+---------------------------------- Reporter: kazu-yamamoto | Owner: Type: bug | Status: infoneeded Priority: high | Milestone: 7.8.3 Component: Build System | Version: 7.7 Resolution: | Keywords: Operating System: MacOS X | Architecture: Type of failure: Building GHC failed | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ----------------------------------------+---------------------------------- Changes (by thoughtpolice): * status: new => infoneeded -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7651#comment:14> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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