Re: [GHC] #3961: -O results in incorrect behavior

[GHC]

#3961: -O results in incorrect behavior
--+-
  Reporter:  RichardG |  Owner:  simonpj
  Type:  bug  | Status:  closed 
  Priority:  high |  Milestone:  7.0.1  
 Component:  Compiler |Version:  6.12.1 
Resolution:  fixed|   Keywords: 
  Testcase:   |  Blockedby:  3959   
Difficulty:   | Os:  MacOS X
  Blocking:   |   Architecture:  x86
   Failure:  Incorrect result at runtime  |  
--+-
Changes (by simonpj):

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


Comment:

 OK so it looks as if it's fixed. Good.  I'm clsoing te ticket.

 Simon

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Re: [GHC] #3961: -O results in incorrect behavior

[GHC]

#3961: -O results in incorrect behavior
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  infoneeded 
Priority:  high  |Milestone:  7.0.1  
   Component:  Compiler  |  Version:  6.12.1 
Keywords:| Testcase: 
   Blockedby:  3959  |   Difficulty: 
  Os:  MacOS X   | Blocking: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--

Comment(by RichardG):

 Tested with HUnit 1.2.2.3 and GHC 7.0.0.20100924 on Mac OS X 10.6.4
 Server.  Issue was not reproduced.

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Re: [GHC] #3961: -O results in incorrect behavior

[GHC]

#3961: -O results in incorrect behavior
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  infoneeded 
Priority:  high  |Milestone:  6.14.1 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:| Testcase: 
   Blockedby:  3959  |   Difficulty: 
  Os:  MacOS X   | Blocking: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--
Changes (by simonpj):

  * status:  new => infoneeded


Comment:

 I believe this is now fixed by the fix to #3959.  Could you see if it
 works now, please?

 Thanks

 Simon

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Re: [GHC] #3961: -O results in incorrect behavior

[GHC]

#3961: -O results in incorrect behavior
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  new
Priority:  high  |Milestone:  6.14.1 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:| Testcase: 
   Blockedby:  3959  |   Difficulty: 
  Os:  MacOS X   | Blocking: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--
Changes (by igloo):

  * blockedby:  => 3959


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Re: [GHC] #3961: -O results in incorrect behavior

[GHC]

#3961: -O results in incorrect behavior
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  new
Priority:  high  |Milestone:  6.14.1 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:|   Difficulty: 
  Os:  MacOS X   | Testcase: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--
Changes (by kfrdbs):

 * cc: kfr...@… (added)


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Re: [GHC] #3961: -O results in incorrect behavior

[GHC]

#3961: -O results in incorrect behavior
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  new
Priority:  high  |Milestone:  6.14.1 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:|   Difficulty: 
  Os:  MacOS X   | Testcase: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--
Changes (by simonmar):

  * milestone:  6.12.3 => 6.14.1


Comment:

 This won't be fixed for 6.12.3, but we almost have a fix ready for HEAD.

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Re: [GHC] #3961: -O results in incorrect behavior (was: -O results in incorrect behavior on Mac OS X)

[GHC]

#3961: -O results in incorrect behavior
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  new
Priority:  high  |Milestone:  6.12.3 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:|   Difficulty: 
  Os:  MacOS X   | Testcase: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--

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Re: [GHC] #3961: -O results in incorrect behavior on Mac OS X

[GHC]

#3961: -O results in incorrect behavior on Mac OS X
-+--
Reporter:  RichardG  |Owner:  simonpj
Type:  bug   |   Status:  new
Priority:  high  |Milestone:  6.12.3 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:|   Difficulty: 
  Os:  MacOS X   | Testcase: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--
Changes (by igloo):

  * owner:  => simonpj


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Re: [GHC] #3961: -O results in incorrect behavior on Mac OS X

[GHC]

#3961: -O results in incorrect behavior on Mac OS X
-+--
Reporter:  RichardG  |Owner: 
Type:  bug   |   Status:  new
Priority:  high  |Milestone:  6.12.3 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:|   Difficulty: 
  Os:  MacOS X   | Testcase: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--
Changes (by igloo):

  * priority:  normal => high
  * milestone:  => 6.12.3


Comment:

 I can reproduce this on amd64/Linux with the 6.12 branch, but not the
 HEAD.

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Re: [GHC] #3961: -O results in incorrect behavior on Mac OS X

[GHC]

#3961: -O results in incorrect behavior on Mac OS X
-+--
Reporter:  RichardG  |Owner: 
Type:  bug   |   Status:  new
Priority:  normal|Milestone: 
   Component:  Compiler  |  Version:  6.12.1 
Keywords:|   Difficulty: 
  Os:  MacOS X   | Testcase: 
Architecture:  x86   |  Failure:  Incorrect result at runtime
-+--

Comment(by simonpj):

 I suspect this is related to #3959, which I'm working on.

 Simon

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Re: [GHC] #3961: -O results in incorrect behavior on Mac OS X

[GHC]

#3961: -O results in incorrect behavior on Mac OS X
-+--
Reporter:  RichardG  |   Owner: 
Type:  bug   |  Status:  new
Priority:  normal|   Component:  Compiler   
 Version:  6.12.1|Keywords: 
  Os:  MacOS X   |Testcase: 
Architecture:  x86   | Failure:  Incorrect result at runtime
-+--

Comment(by RichardG):

 Ticket #3983 may be related.

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Re: [GHC] #3961: -O results in incorrect behavior on Mac OS X

[GHC]

#3961: -O results in incorrect behavior on Mac OS X
-+--
Reporter:  RichardG  |   Owner: 
Type:  bug   |  Status:  new
Priority:  normal|   Component:  Compiler   
 Version:  6.12.1|Keywords: 
  Os:  MacOS X   |Testcase: 
Architecture:  x86   | Failure:  Incorrect result at runtime
-+--

Comment(by RichardG):

 This was reproduced with the 6.12.2 snapshot (10-Apr-2010 15:57) as
 compiled with GHC 6.10.4 (Haskell Platform 2009.2).

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Re: [GHC] #3961: -O results in incorrect behavior on Mac OS X (was: HUnit has erroneous behavior when compiled with Cabal)

[GHC]

#3961: -O results in incorrect behavior on Mac OS X
-+--
Reporter:  RichardG  |   Owner: 
Type:  bug   |  Status:  new
Priority:  normal|   Component:  Compiler   
 Version:  6.12.1|Keywords: 
  Os:  MacOS X   |Testcase: 
Architecture:  x86   | Failure:  Incorrect result at runtime
-+--
Changes (by RichardG):

 * cc: richa...@… (added)
  * failure:  None/Unknown => Incorrect result at runtime


Comment:

 Further experimentation has shown the behavior differs when the {{{-O}}}
 flag is used.  I.e.,

 {{{
 ghc --make -i.:tests -cpp -DBASE4 tests/HUnitTest98.lhs
 }}}

 has the correct behavior but

 {{{
 ghc --make -i.:tests -cpp -DBASE4 -O tests/HUnitTest98.lhs
 }}}

 does not.

 The severity of this issue is compounded by the fact that Cabal uses the
 {{{-O}}} flag by default.

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