date:20120711

Re: [GHC] #6167: Compile stalls with pause returning ERESTARTNOHAND

2012-07-11 Thread GHC

#6167: Compile stalls with pause returning ERESTARTNOHAND
--+-
  Reporter:  erikd|  Owner:  
  Type:  bug  | Status:  closed  
  Priority:  normal   |  Milestone:  7.6.1   
 Component:  Compiler |Version:  7.4.1   
Resolution:  worksforme   |   Keywords:  
Os:  Linux|   Architecture:  Unknown/Multiple
   Failure:  Building GHC failed  | Difficulty:  Unknown 
  Testcase:   |  Blockedby:  
  Blocking:   |Related:  
--+-
Changes (by PHO):

 * cc: pho@… (added)


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Re: [GHC] #6166: Performance regression in mwc-random since 7.0.x

2012-07-11 Thread GHC

#6166: Performance regression in mwc-random since 7.0.x
---+
Reporter:  bos |   Owner: 
Type:  bug |  Status:  new
Priority:  high|   Milestone:  7.6.1  
   Component:  Compiler| Version:  7.4.2  
Keywords:  |  Os:  Unknown/Multiple   
Architecture:  x86_64 (amd64)  | Failure:  Runtime performance bug
  Difficulty:  Unknown |Testcase: 
   Blockedby:  |Blocking: 
 Related:  |  
---+
Changes (by PHO):

 * cc: pho@… (added)


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[GHC] #7068: Extensive Memory usage (regression)

2012-07-11 Thread GHC

#7068: Extensive Memory usage (regression)
--+-
 Reporter:  waldheinz |  Owner:  
 Type:  bug   | Status:  new 
 Priority:  normal|  Component:  Compiler
  Version:  7.4.1 |   Keywords:  
   Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  Compile-time performance bug  |   Testcase:  
Blockedby:|   Blocking:  
  Related:|  
--+-
 The "bling raytracer" project [1] can not be compiled with recent GHC
 versions (personally tested 7.4.1 on Linux / OS X / Windows, that 7.4.2
 fails in the same way was reported on IRC).

 The problem is that when compiling the "Transform.hs" source file [2] GHC
 allocates more RAM than any of my machines can bear (8+ GB).

 This does not happen with 7.0.x versions of GHC. Also, reducing the
 optimization level from O2 to O1 makes the problem go away. To reproduce
 this bug I'd recommend

 > hg clone -r eb0f7f91bde6 https://code.google.com/p/bling-raytracer/
 > cabal build

 There was no consensus on IRC if this is really a GHC bug or I should
 simply tinker with the GHC options / source file until it works. But since
 the code in question does not use any obscure extensions (in fact, no
 extensions at all) and could be compiled with many GHC versions from 6.4
 onward, I thought you might want to hear about it.

 [1] http://code.google.com/p/bling-raytracer/
 [2] http://code.google.com/p/bling-
 
raytracer/source/browse/src/Graphics/Bling/Transform.hs?r=9499d979762ddcbc1ff31aea053dfcf3d4590a08

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Re: [GHC] #7067: Add alignment-restricted ForeignPtr allocation actions

2012-07-11 Thread GHC

#7067: Add alignment-restricted ForeignPtr allocation actions
--+-
 Reporter:  nicolast  |  Owner:  
 Type:  feature request   | Status:  patch   
 Priority:  normal|  Component:  libraries/base  
  Version:|   Keywords:  
   Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown  |   Testcase:  
Blockedby:|   Blocking:  
  Related:|  
--+-
Changes (by nicolast):

  * status:  new => patch


Comment:

 Using attachment:ticket:7067:0001-Add-alignment-restricted-ForeignPtr-
 allocation-actio.patch and an adapted mallocVector implementation (see
 mallocVectorMine3 at https://gist.github.com/3084806#LC129) the corruption
 as found earlier (using mallocVectorMine1 or mallocVectorMine2) no longer
 occur.

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[GHC] #7067: Add alignment-restricted ForeignPtr allocation actions

2012-07-11 Thread GHC

#7067: Add alignment-restricted ForeignPtr allocation actions
--+-
 Reporter:  nicolast  |  Owner:  
 Type:  feature request   | Status:  new 
 Priority:  normal|  Component:  libraries/base  
  Version:|   Keywords:  
   Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown  |   Testcase:  
Blockedby:|   Blocking:  
  Related:|  
--+-
 Whilst GHC.ForeignPtr exports some actions to allocate buffers containing
 an element of some type, or of some specific byte-length efficiently, and
 there's an implementation of newAlignedPinnedByteArray# used internally,
 there's no way to request such buffer of a given size and at a given
 alignment.

 The ability to enforce a specific alignment for some memory buffer is
 important e.g. when working with SIMD instructions (which is my original
 use-case). My attempts to work-around the lack of this function failed
 miserably (with a reproducible test-case) as mentioned in [1].

 [1] http://www.haskell.org/pipermail/glasgow-haskell-
 users/2012-July/022579.html

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Re: [GHC] #7062: Spurious undefined reference to `openpty'

2012-07-11 Thread GHC

#7062: Spurious undefined reference to `openpty'
-+--
Reporter:  simonmar  |   Owner:  
Type:  bug   |  Status:  merge   
Priority:  high  |   Milestone:  7.4.3   
   Component:  Compiler  | Version:  7.4.2   
Keywords:|  Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  | Failure:  None/Unknown
  Difficulty:  Unknown   |Testcase:  
   Blockedby:|Blocking:  
 Related:|  
-+--
Changes (by simonmar):

  * status:  new => merge
  * milestone:  7.6.1 => 7.4.3


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Re: [GHC] #7062: Spurious undefined reference to `openpty'

2012-07-11 Thread GHC

#7062: Spurious undefined reference to `openpty'
-+--
Reporter:  simonmar  |   Owner:  
Type:  bug   |  Status:  new 
Priority:  high  |   Milestone:  7.6.1   
   Component:  Compiler  | Version:  7.4.2   
Keywords:|  Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  | Failure:  None/Unknown
  Difficulty:  Unknown   |Testcase:  
   Blockedby:|Blocking:  
 Related:|  
-+--

Comment(by marlowsd@…):

 commit 301b37255fb9ea3abd634cf9caf774c6dab647b7
 {{{
 Author: Simon Marlow 
 Date:   Wed Jul 11 14:32:47 2012 +0100

 Link the extra-libraries when making a .so for a package (#7062)

 I don't think I completely understand what's going on here, but this
 does seem to fix it, and morally it seems like the right thing.

  rules/build-package-way.mk |1 +
  1 files changed, 1 insertions(+), 0 deletions(-)
 }}}

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Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

2012-07-11 Thread GHC

#7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...
--+-
  Reporter:  erikd|  Owner: 
  Type:  bug  | Status:  closed 
  Priority:  normal   |  Milestone:  7.6.1  
 Component:  Compiler |Version:  7.5
Resolution:  fixed|   Keywords: 
Os:  Unknown/Multiple |   Architecture:  x86
   Failure:  Building GHC failed  | Difficulty:  Unknown
  Testcase:   |  Blockedby: 
  Blocking:   |Related: 
--+-
Changes (by pcapriotti):

  * status:  new => closed
  * resolution:  => fixed


Comment:

 Fixed by removing the `freeRegBase` function in non-x86 builds.

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Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

2012-07-11 Thread GHC

#7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...
--+-
  Reporter:  erikd|  Owner: 
  Type:  bug  | Status:  new
  Priority:  normal   |  Milestone:  7.6.1  
 Component:  Compiler |Version:  7.5
Resolution:   |   Keywords: 
Os:  Unknown/Multiple |   Architecture:  x86
   Failure:  Building GHC failed  | Difficulty:  Unknown
  Testcase:   |  Blockedby: 
  Blocking:   |Related: 
--+-

Comment(by p.capriotti@…):

 commit 5b93af461498db8352045b16ccdd90efcd6b8023
 {{{
 Author: Paolo Capriotti 
 Date:   Wed Jul 11 14:07:19 2012 +0100

 Fix build for non x86/x86_64 (#7065)

  compiler/nativeGen/X86/Regs.hs |4 +++-
  1 files changed, 3 insertions(+), 1 deletions(-)
 }}}

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[GHC] #7066: isInstance does not work for compound types

2012-07-11 Thread GHC

#7066: isInstance does not work for compound types
--+-
 Reporter:  edsko |  Owner:  
 Type:  bug   | Status:  new 
 Priority:  normal|  Component:  Template Haskell
  Version:  7.4.2 |   Keywords:  
   Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple
  Failure:  None/Unknown  |   Testcase:  
Blockedby:|   Blocking:  
  Related:|  
--+-
 Consider

 {{{
 import Language.Haskell.TH.Syntax

 data A = A

 test :: Q [Dec]
 test = do
   tp <- [t| (Int, A) |]
   inst1 <- isInstance ''Show [ tp ]
   runIO $ print inst1
   return []
 }}}

 This prints True even though there is no Show instance for A (the Show
 instance it finds is for pairs, but it does not verify that there are Show
 instances for the pair components).

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Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

2012-07-11 Thread GHC

#7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...
--+-
  Reporter:  erikd|  Owner: 
  Type:  bug  | Status:  new
  Priority:  normal   |  Milestone:  7.6.1  
 Component:  Compiler |Version:  7.5
Resolution:   |   Keywords: 
Os:  Unknown/Multiple |   Architecture:  x86
   Failure:  Building GHC failed  | Difficulty:  Unknown
  Testcase:   |  Blockedby: 
  Blocking:   |Related: 
--+-
Changes (by erikd):

  * owner:  pcapriotti =>
  * status:  closed => new
  * resolution:  fixed =>


Comment:

 With the above patch it now fails to compile on powerpc. Error is:

 {{{
 compiler/nativeGen/X86/Regs.hs:407:10:
 The type signature for `freeRegBase' lacks an accompanying binding
 }}}

 Currently testing a patch to fix it.

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Re: [GHC] #7062: Spurious undefined reference to `openpty'

2012-07-11 Thread GHC

#7062: Spurious undefined reference to `openpty'
-+--
Reporter:  simonmar  |   Owner:  
Type:  bug   |  Status:  new 
Priority:  high  |   Milestone:  7.6.1   
   Component:  Compiler  | Version:  7.4.2   
Keywords:|  Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  | Failure:  None/Unknown
  Difficulty:  Unknown   |Testcase:  
   Blockedby:|Blocking:  
 Related:|  
-+--

Comment(by nus):

 All right, "It's not a bug, it's a feature".

 The linking command issued by 'inplace/bin/ghc-stage2 -o process001
 process001.hs -dynamic' through gcc (reformatted for clarity):
 {{{
 /usr/lib/gcc/x86_64-linux-gnu/4.6/collect2
 --sysroot=/ --build-id --no-add-needed --as-needed --eh-frame-hdr -m
 elf_x86_64
 --hash-style=gnu -dynamic-linker /lib64/ld-linux-x86-64.so.2 -z relro
 -o process001
 -u ghczmprim_GHCziTypes_Izh_static_info -u
 ghczmprim_GHCziTypes_Czh_static_info -u
 ghczmprim_GHCziTypes_Fzh_static_info -u
 ghczmprim_GHCziTypes_Dzh_static_info -u base_GHCziPtr_Ptr_static_info -u
 ghczmprim_GHCziTypes_Wzh_static_info -u base_GHCziInt_I8zh_static_info -u
 base_GHCziInt_I16zh_static_info -u base_GHCziInt_I32zh_static_info -u
 base_GHCziInt_I64zh_static_info -u base_GHCziWord_W8zh_static_info -u
 base_GHCziWord_W16zh_static_info -u base_GHCziWord_W32zh_static_info -u
 base_GHCziWord_W64zh_static_info -u base_GHCziStable_StablePtr_static_info
 -u ghczmprim_GHCziTypes_Izh_con_info -u ghczmprim_GHCziTypes_Czh_con_info
 -u ghczmprim_GHCziTypes_Fzh_con_info -u ghczmprim_GHCziTypes_Dzh_con_info
 -u base_GHCziPtr_Ptr_con_info -u base_GHCziPtr_FunPtr_con_info -u
 base_GHCziStable_StablePtr_con_info -u ghczmprim_GHCziTypes_False_closure
 -u ghczmprim_GHCziTypes_True_closure -u
 base_GHCziPack_unpackCString_closure -u
 base_GHCziIOziException_stackOverflow_closure -u
 base_GHCziIOziException_heapOverflow_closure -u
 base_ControlziExceptionziBase_nonTermination_closure -u
 base_GHCziIOziException_blockedIndefinitelyOnMVar_closure -u
 base_GHCziIOziException_blockedIndefinitelyOnSTM_closure -u
 base_ControlziExceptionziBase_nestedAtomically_closure -u
 base_GHCziWeak_runFinalizzerBatch_closure -u
 base_GHCziTopHandler_flushStdHandles_closure -u
 base_GHCziTopHandler_runIO_closure -u
 base_GHCziTopHandler_runNonIO_closure -u
 base_GHCziConcziIO_ensureIOManagerIsRunning_closure -u
 base_GHCziConcziSync_runSparks_closure
 -u base_GHCziConcziSignal_runHandlers_closure
 /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crt1.o
 /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crti.o
 /usr/lib/gcc/x86_64-linux-gnu/4.6/crtbegin.o
 -L/home/user/dev/ghcbld/libraries/process/dist-install/build
 -L/home/user/dev/ghcbld/libraries/directory/dist-install/build
 -L/home/user/dev/ghcbld/libraries/unix/dist-install/build
 -L/home/user/dev/ghcbld/libraries/bytestring/dist-install/build
 -L/home/user/dev/ghcbld/libraries/time/dist-install/build
 -L/home/user/dev/ghcbld/libraries/old-locale/dist-install/build
 -L/home/user/dev/ghcbld/libraries/filepath/dist-install/build
 -L/home/user/dev/ghcbld/libraries/deepseq/dist-install/build
 -L/home/user/dev/ghcbld/libraries/array/dist-install/build
 -L/home/user/dev/ghcbld/libraries/base/dist-install/build
 -L/home/user/dev/ghcbld/libraries/integer-gmp/dist-install/build
 -L/home/user/dev/ghcbld/libraries/ghc-prim/dist-install/build
 -L/home/user/dev/ghcbld/rts/dist/build -L/usr/lib/gcc/x86_64-linux-gnu/4.6
 -L/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu
 -L/usr/lib/gcc/x86_64-linux-gnu/4.6/../../../../lib -L/lib/x86_64-linux-
 gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib
 -L/usr/lib/gcc/x86_64-linux-gnu/4.6/../../..
 --hash-size=31 --reduce-memory-overheads
 process001.o
 -rpath /home/user/dev/ghcbld/libraries/process/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/directory/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/unix/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/bytestring/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/time/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/old-locale/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/filepath/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/deepseq/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/array/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/base/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/integer-gmp/dist-install/build -rpath
 /home/user/dev/ghcbld/libraries/ghc-prim/dist-install/build -rpath
 /home/user/dev/ghcbld/rts/dist/build
 /tmp/ghc25888_0/ghc25888_0.o
 /tmp/ghc25888_0/ghc25888_1

Re: [GHC] #7061: Allow 'default' declarations within GHCi

2012-07-11 Thread GHC

#7061: Allow  'default' declarations within GHCi
-+--
Reporter:  parcs |   Owner:  
Type:  feature request   |  Status:  new 
Priority:  high  |   Milestone:  7.6.1   
   Component:  GHCi  | Version:  7.4.2   
Keywords:|  Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  | Failure:  None/Unknown
  Difficulty:  Unknown   |Testcase:  
   Blockedby:|Blocking:  
 Related:|  
-+--
Changes (by simonmar):

  * priority:  normal => high
  * difficulty:  => Unknown
  * milestone:  => 7.6.1


Comment:

 Looks good.

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Re: [GHC] #7058: Add strict version of modifySTRef

2012-07-11 Thread GHC

#7058: Add strict version of modifySTRef
--+-
  Reporter:  joeyadams|  Owner:  simonmar
  Type:  feature request  | Status:  closed  
  Priority:  high |  Milestone:  7.6.1   
 Component:  libraries/base   |Version:  7.4.2   
Resolution:  fixed|   Keywords:  
Os:  Unknown/Multiple |   Architecture:  Unknown/Multiple
   Failure:  Runtime performance bug  | Difficulty:  Unknown 
  Testcase:   |  Blockedby:  
  Blocking:   |Related:  
--+-
Changes (by simonmar):

  * status:  new => closed
  * resolution:  => fixed


Comment:

 Fixed:

 {{{
 commit 5ccd462b97f00802936eb75276bedcda6ed9edfb
 Author: Joey Adams 
 Date:   Sat Jul 7 22:13:52 2012 -0400

 Add strict version of modifySTRef

 Also, add a warning to modifySTRef, mostly copy-pasted from the
 warning
 for modifyIORef.
 }}}

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Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

2012-07-11 Thread GHC

#7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...
--+-
  Reporter:  erikd|  Owner:  pcapriotti
  Type:  bug  | Status:  closed
  Priority:  normal   |  Milestone:  7.6.1 
 Component:  Compiler |Version:  7.5   
Resolution:  fixed|   Keywords:
Os:  Unknown/Multiple |   Architecture:  x86   
   Failure:  Building GHC failed  | Difficulty:  Unknown   
  Testcase:   |  Blockedby:
  Blocking:   |Related:
--+-
Changes (by pcapriotti):

  * status:  new => closed
  * resolution:  => fixed


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Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

2012-07-11 Thread GHC

#7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...
-+--
Reporter:  erikd |   Owner:  pcapriotti 
Type:  bug   |  Status:  new
Priority:  normal|   Milestone:  7.6.1  
   Component:  Compiler  | Version:  7.5
Keywords:|  Os:  Unknown/Multiple   
Architecture:  x86   | Failure:  Building GHC failed
  Difficulty:  Unknown   |Testcase: 
   Blockedby:|Blocking: 
 Related:|  
-+--

Comment(by p.capriotti@…):

 commit 6ed684b35af3045a41e34b4f8a0b6dd05a6eb700
 {{{
 Author: Paolo Capriotti 
 Date:   Tue Jul 10 10:36:03 2012 +0100

 Fix overlapping patterns warning (#7065)

  compiler/nativeGen/X86/Regs.hs |   18 ++
  1 files changed, 10 insertions(+), 8 deletions(-)
 }}}

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Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

2012-07-11 Thread GHC

#7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...
-+--
Reporter:  erikd |   Owner:  pcapriotti 
Type:  bug   |  Status:  new
Priority:  normal|   Milestone:  7.6.1  
   Component:  Compiler  | Version:  7.5
Keywords:|  Os:  Unknown/Multiple   
Architecture:  x86   | Failure:  Building GHC failed
  Difficulty:  Unknown   |Testcase: 
   Blockedby:|Blocking: 
 Related:|  
-+--
Changes (by pcapriotti):

  * owner:  => pcapriotti
  * difficulty:  => Unknown
  * milestone:  => 7.6.1


Comment:

 Fix is on the way.

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Re: [GHC] #6167: Compile stalls with pause returning ERESTARTNOHAND

Re: [GHC] #6166: Performance regression in mwc-random since 7.0.x

[GHC] #7068: Extensive Memory usage (regression)

Re: [GHC] #7067: Add alignment-restricted ForeignPtr allocation actions

[GHC] #7067: Add alignment-restricted ForeignPtr allocation actions

Re: [GHC] #7062: Spurious undefined reference to `openpty'

Re: [GHC] #7062: Spurious undefined reference to `openpty'

Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

[GHC] #7066: isInstance does not work for compound types

Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

Re: [GHC] #7062: Spurious undefined reference to `openpty'

Re: [GHC] #7061: Allow 'default' declarations within GHCi

Re: [GHC] #7058: Add strict version of modifySTRef

Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

Re: [GHC] #7065: x86 : Pattern match fail in an equation for `freeReg': freeReg 5 = ...

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