The Glasgow Haskell Bugs Mailing List

GHC | 1 Feb 2012 01:37

Re: #5828: OSHaiku

#5828: OSHaiku
---------------------------------+------------------------------------------
    Reporter:  donn              |       Owner:  igloo              
        Type:  bug               |      Status:  new                
    Priority:  normal            |   Milestone:  7.4.2              
   Component:  Compiler          |     Version:  7.4.1-rc2          
    Keywords:                    |          Os:  Other              
Architecture:  Unknown/Multiple  |     Failure:  Building GHC failed
  Difficulty:  Unknown           |    Testcase:                     
   Blockedby:                    |    Blocking:                     
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by igloo):

  * owner:  => igloo
  * difficulty:  => Unknown
  * milestone:  => 7.4.2

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5828#comment:2>

GHC | 1 Feb 2012 01:38

Re: #5820: defining instance in GHCi leads to duplicated instances

#5820: defining instance in GHCi leads to duplicated instances
---------------------------------+------------------------------------------
    Reporter:  guest             |       Owner:                  
        Type:  bug               |      Status:  new             
    Priority:  high              |   Milestone:  7.4.2           
   Component:  GHCi              |     Version:  7.4.1-rc1       
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by igloo):

  * priority:  normal => high
  * difficulty:  => Unknown
  * milestone:  => 7.4.2

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5820#comment:1>

GHC | 1 Feb 2012 02:17

Re: #5777: core lint error with arrow notation and GADTs

#5777: core lint error with arrow notation and GADTs
------------------------------+---------------------------------------------
    Reporter:  benmos         |       Owner:                    
        Type:  bug            |      Status:  new               
    Priority:  normal         |   Milestone:  7.4.2             
   Component:  Compiler       |     Version:  7.4.1-rc1         
    Keywords:  arrows, GADTs  |          Os:  MacOS X           
Architecture:  x86            |     Failure:  Compile-time crash
  Difficulty:  Unknown        |    Testcase:                    
   Blockedby:                 |    Blocking:                    
     Related:                 |  
------------------------------+---------------------------------------------
Changes (by igloo):

  * difficulty:  => Unknown
  * milestone:  => 7.4.2

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5777#comment:3>

GHC | 1 Feb 2012 02:18

Re: #5786: Dynanmic way fails when GHC built with LLVM backend

#5786: Dynanmic way fails when GHC built with LLVM backend
---------------------------------+------------------------------------------
    Reporter:  dterei            |       Owner:  dterei          
        Type:  bug               |      Status:  new             
    Priority:  normal            |   Milestone:  7.6.1           
   Component:  Compiler (LLVM)   |     Version:  7.4.1-rc1       
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  Runtime crash   
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:  #5757             |  
---------------------------------+------------------------------------------
Changes (by igloo):

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

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5786#comment:2>

GHC | 1 Feb 2012 02:19

Re: #5623: GHC 7.2.1 Performance Regression: Vector

#5623: GHC 7.2.1 Performance Regression: Vector
---------------------------------+------------------------------------------
    Reporter:  dterei            |       Owner:  simonpj                
        Type:  bug               |      Status:  new                    
    Priority:  high              |   Milestone:  7.4.1                  
   Component:  Compiler          |     Version:  7.3                    
    Keywords:                    |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:                    |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by jwlato):

 * cc: jwlato <at> … (added)

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5623#comment:8>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

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GHC | 1 Feb 2012 02:21

Re: #5787: Add instances to ZipList

#5787: Add instances to ZipList
---------------------------------+------------------------------------------
    Reporter:  pumpkin           |       Owner:                  
        Type:  feature request   |      Status:  infoneeded      
    Priority:  normal            |   Milestone:  7.6.1           
   Component:  libraries/base    |     Version:  7.2.2           
    Keywords:                    |          Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown    
  Difficulty:  Unknown           |    Testcase:                  
   Blockedby:                    |    Blocking:                  
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by igloo):

  * status:  new => infoneeded
  * difficulty:  => Unknown
  * milestone:  => 7.6.1

Comment:

 If you attach the patch, I can try validating it.

 Can you add a link to the thread in the libraries <at>  archives please?

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5787#comment:1>

GHC | 1 Feb 2012 07:28

Re: #5623: GHC 7.2.1 Performance Regression: Vector

#5623: GHC 7.2.1 Performance Regression: Vector
---------------------------------+------------------------------------------
    Reporter:  dterei            |       Owner:  simonpj                
        Type:  bug               |      Status:  new                    
    Priority:  high              |   Milestone:  7.4.1                  
   Component:  Compiler          |     Version:  7.3                    
    Keywords:                    |          Os:  Unknown/Multiple       
Architecture:  Unknown/Multiple  |     Failure:  Runtime performance bug
  Difficulty:                    |    Testcase:                         
   Blockedby:                    |    Blocking:                         
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by WrenThornton):

 * cc: wren <at> … (added)

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5623#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler

_______________________________________________
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Glasgow-haskell-bugs <at> haskell.org
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GHC | 1 Feb 2012 09:13

#5837: Context reduction stack overflow can take very long

#5837: Context reduction stack overflow can take very long
------------------------------+---------------------------------------------
 Reporter:  dreixel           |          Owner:                         
     Type:  bug               |         Status:  new                    
 Priority:  normal            |      Component:  Compiler (Type checker)
  Version:  7.4.1-rc2         |       Keywords:                         
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple       
  Failure:  None/Unknown      |       Testcase:                         
Blockedby:                    |       Blocking:                         
  Related:                    |  
------------------------------+---------------------------------------------
 The following code, taken from the "Haskell Type Constraints Unleashed"
 paper:
 {{{
 {-# LANGUAGE TypeFamilies #-}

 type family TF a :: *
 type instance TF (a,b) = (TF a, TF b)

 t :: (a ~ TF (a,Int)) => Int
 t = undefined
 }}}
 fails almost immediately with `Context reduction stack overflow` on GHC
 7.2, but seems to loop forever with 7.4.1-rc2. Setting `-fcontext-stack`
 to `20` results in near immediate termination with the same error. But
 #5395 raised the context stack size default to `200`, which makes this
 code (that does not use `-XUndecidableInstances`) take "forever" to
 compile.

--

--

(Continue reading)

GHC | 1 Feb 2012 12:50

Re: #5812: Nasty interaction between MagicHash and CPP LANGUAGE pragmas

#5812: Nasty interaction between MagicHash and CPP LANGUAGE pragmas
---------------------------------+------------------------------------------
    Reporter:  erikd             |       Owner:                             
        Type:  bug               |      Status:  new                        
    Priority:  normal            |   Milestone:                             
   Component:  Compiler          |     Version:  7.2.2                      
    Keywords:                    |          Os:  Unknown/Multiple           
Architecture:  Unknown/Multiple  |     Failure:  Incorrect result at runtime
  Difficulty:  Unknown           |    Testcase:                             
   Blockedby:                    |    Blocking:                             
     Related:                    |  
---------------------------------+------------------------------------------
Changes (by erikd):

  * status:  infoneeded => new

Comment:

 Yes, that's it. If I put the string on a single line it works.

 Unfortunately, the suggested solution, adding trailing whitespace, isn't
 very convenient as my text editor is configured to remove all trailing
 whitespace on file save (a feature I really like).

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5812#comment:2>

GHC | 1 Feb 2012 12:52

Re: #5812: Nasty interaction between MagicHash and CPP LANGUAGE pragmas

#5812: Nasty interaction between MagicHash and CPP LANGUAGE pragmas
------------------------------------------+---------------------------------
  Reporter:  erikd                        |          Owner:                  
      Type:  bug                          |         Status:  closed          
  Priority:  normal                       |      Milestone:                  
 Component:  Compiler                     |        Version:  7.2.2           
Resolution:  wontfix                      |       Keywords:                  
        Os:  Unknown/Multiple             |   Architecture:  Unknown/Multiple
   Failure:  Incorrect result at runtime  |     Difficulty:  Unknown         
  Testcase:                               |      Blockedby:                  
  Blocking:                               |        Related:                  
------------------------------------------+---------------------------------
Changes (by simonmar):

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

Comment:

 Then my suggestion is to use ++ instead of string gaps.  GHC will optimise
 it away anyway.

--

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5812#comment:3>

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