Re: [GHC] #758: Error compiling darcs on Mac OS X

#758: Error compiling darcs on Mac OS X
-----------------------------------------+----------------------------------
  Reporter:  charles.gerungan <at> gmail.com  |          Owner:         
      Type:  bug                         |         Status:  new    
  Priority:  normal                      |      Milestone:         
 Component:  Compiler                    |        Version:  6.4.2  
  Severity:  normal                      |     Resolution:         
  Keywords:                              |             Os:  MacOS X
Difficulty:  Unknown                     |   Architecture:  powerpc
-----------------------------------------+----------------------------------
Comment (by gwright <at> antiope.com):

 This seems to be a duplicate of bug 751.

 -Greg

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/758>
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[GHC] #759: RULES ignored by recompilation checker

#759: RULES ignored by recompilation checker
-----------------------------------+----------------------------------------
    Reporter:  rl <at> cse.unsw.edu.au  |        Owner:         
        Type:  bug                 |       Status:  new    
    Priority:  normal              |    Milestone:         
   Component:  Compiler            |      Version:  6.4.2  
    Severity:  normal              |     Keywords:         
          Os:  Linux               |   Difficulty:  Unknown
Architecture:  x86                 |  
-----------------------------------+----------------------------------------
The recompilation checker does not seem to take RULES into account. This
 can lead to some really nasty optimisation bugs. A small example:

 {{{
 [rl <at> rl-lap stuff]$ cat T.hs
 module T where
 foo n = n+1
 {-# RULES
 "foo" forall n.
   foo (foo n) = foo (n+2)
 #-}

 [rl <at> rl-lap stuff]$ cat U.hs
 module Main where
 import T
 main = print $ foo (foo 5)

 [rl <at> rl-lap stuff]$ ghc --make U.hs -O
 Chasing modules from: U.hs
 Compiling T                ( ./T.hs, ./T.o )

[GHC] #760: Template Haskell doesn't like scoped type variables

#760: Template Haskell doesn't like scoped type variables
-----------------------------------+----------------------------------------
    Reporter:  rl <at> cse.unsw.edu.au  |        Owner:         
        Type:  bug                 |       Status:  new    
    Priority:  normal              |    Milestone:         
   Component:  Compiler            |      Version:  6.4.2  
    Severity:  normal              |     Keywords:         
          Os:  Linux               |   Difficulty:  Unknown
Architecture:  x86                 |  
-----------------------------------+----------------------------------------
GHC panics is scoped type variables are used in [d| ... |]:
 {{{
 [rl <at> rl-lap stuff]$ cat R.hs
 $(id [d| f (x :: a) = x |])

 [rl <at> rl-lap stuff]$ ghc -fglasgow-exts -c R.hs
 ghc-6.4.2: panic! (the `impossible' happened, GHC version 6.4.2):
         Failed binder lookup: a{tv a18c}

 Please report this as a compiler bug.  See:
   http://www.haskell.org/ghc/reportabug

 }}}

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/760>
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Re: [GHC] #751: ghc 6.4.2 on OS X 10.4.6 fails a compiler error building Crypto-3.0.3.

#751: ghc 6.4.2 on OS X 10.4.6 fails a compiler error building Crypto-3.0.3.
----------------------------------+-----------------------------------------
  Reporter:  gwright <at> antiope.com  |          Owner:         
      Type:  bug                  |         Status:  new    
  Priority:  high                 |      Milestone:         
 Component:  Compiler             |        Version:  6.4.2  
  Severity:  blocker              |     Resolution:         
  Keywords:                       |             Os:  MacOS X
Difficulty:  Unknown              |   Architecture:  powerpc
----------------------------------+-----------------------------------------
Changes (by simonmar):

  * severity:  normal => blocker
  * priority:  normal => high

Comment:

 See also #755, #758

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/751>
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Re: [GHC] #755: GHC 6.4.2 crashes frequently on OSX Tiger 10.4.6

#755: GHC 6.4.2 crashes frequently on OSX Tiger 10.4.6
-----------------------+----------------------------------------------------
  Reporter:  guest     |          Owner:           
      Type:  bug       |         Status:  closed   
  Priority:  high      |      Milestone:  6.4.2    
 Component:  Compiler  |        Version:  6.4.2    
  Severity:  major     |     Resolution:  duplicate
  Keywords:  crash     |             Os:  MacOS X  
Difficulty:  Unknown   |   Architecture:  powerpc  
-----------------------+----------------------------------------------------
Changes (by simonmar):

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

Comment:

 duplicate of #751

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/755>
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Re: [GHC] #758: Error compiling darcs on Mac OS X

#758: Error compiling darcs on Mac OS X
-----------------------------------------+----------------------------------
  Reporter:  charles.gerungan <at> gmail.com  |          Owner:           
      Type:  bug                         |         Status:  closed   
  Priority:  normal                      |      Milestone:           
 Component:  Compiler                    |        Version:  6.4.2    
  Severity:  normal                      |     Resolution:  duplicate
  Keywords:                              |             Os:  MacOS X  
Difficulty:  Unknown                     |   Architecture:  powerpc  
-----------------------------------------+----------------------------------
Changes (by simonmar):

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

Comment:

 closed; dup of #751

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/758>
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Re: [GHC] #754: EVACUATED object entered

#754: EVACUATED object entered
------------------------------+---------------------------------------------
  Reporter:  matt <at> mattcox.ca  |          Owner:           
      Type:  bug              |         Status:  closed   
  Priority:  normal           |      Milestone:           
 Component:  Runtime System   |        Version:  6.4.2    
  Severity:  critical         |     Resolution:  duplicate
  Keywords:                   |             Os:  MacOS X  
Difficulty:  Unknown          |   Architecture:  powerpc  
------------------------------+---------------------------------------------
Changes (by simonmar):

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

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/754>
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Re: [GHC] #751: ghc 6.4.2 on OS X 10.4.6 fails a compiler error building Crypto-3.0.3.

#751: ghc 6.4.2 on OS X 10.4.6 fails a compiler error building Crypto-3.0.3.
----------------------------------+-----------------------------------------
  Reporter:  gwright <at> antiope.com  |          Owner:         
      Type:  bug                  |         Status:  new    
  Priority:  high                 |      Milestone:         
 Component:  Compiler             |        Version:  6.4.2  
  Severity:  blocker              |     Resolution:         
  Keywords:                       |             Os:  MacOS X
Difficulty:  Unknown              |   Architecture:  powerpc
----------------------------------+-----------------------------------------
Comment (by simonmar):

 See also #754

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/751>
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Re: 6.4.2 under solaris

Christian Maeder wrote:
> Christian Maeder wrote:
> 
>> using Rev. 1.1.2.3 of timeout.hs I could run the testsuite until 
>> conc020 which did then "sleep" with "truss" repeatedly outputting:
> 
> 
> I ran the testsuite now with ghc-6.4.1. The results are attached at
> 
>  > http://hackage.haskell.org/trac/ghc/ticket/752
> 
> First of all I had to add "optl-lrt" to ghc-6.4.1 in order to be able to 
> link the threaded cases to aboid "undefined reference to `sched_yield'" 
> in "OSThreads.c:(.text+0x90)"
> 
> Is "-threaded" the cause for the ghc-6.4.2 problems under solaris?

In GHC 6.4.2, the stage 2 compiler is built with -threaded, this is a 
change from previous versions.  If -threaded isn't working properly, 
then the stage 2 compiler will be affected - that seems to be the case 
on Solaris.

To get going, you could just disable -threaded in stage 2 (see 
ghc/compiler/Makefile).

> "conc020(threaded)" seg-faulted with ghc-6.4.1 (while being treated with 
> "truss")

Looks like 6.4.1 had some problems with -threaded on Solaris too.

Re: ghc-6.4: panic!

Thurston Hou Yeen Dang wrote:
> Hello,
> 
> The following code:
> -----
> data Tree a = Leaf | Node a Tree Tree
> 
> double :: Tree Int -> Tree Int
> double Leaf
>     = Node 1 Leaf Leaf
> double (Node myKey leftTree rightTree)
>     = Node myKey (double leftTree) (double rightTree)
> -----
> caused an error message:
> -----
> ghc-6.4: panic! (the `impossible' happened, GHC version 6.4):
>         Unify.unifyTauTyLists: mismatched type lists!

This was fixed in version 6.4.1:

   http://hackage.haskell.org/trac/ghc/ticket/456

Cheers,
	Simon