[Bug rtl-optimization/27044] New: Loop variables incorrectly initialized with optimization on

[Bug rtl-optimization/27044] New: Loop variables incorrectly initialized with optimization on

[ned at bike-nomad dot com]

In the following code, in the loop at line 381 of jtagmkII.c (line 2586 of the
attached jtagmkII.i), msglen (and l, as I recall) contain incorrect values.
This only happens when optimization is turned on (-O2); it does not happen with
-O1. The code runs correctly when compiled with gcc-3.3 using optimization.


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           Summary: Loop variables incorrectly initialized with optimization
                    on
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ned at bike-nomad dot com
 GCC build triplet: powerpc-apple-darwin8
  GCC host triplet: powerpc-apple-darwin8
GCC target triplet: powerpc-apple-darwin8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044

[Bug rtl-optimization/27044] Loop variables incorrectly initialized with optimization on

[ned at bike-nomad dot com]

------- Comment #1 from ned at bike-nomad dot com  2006-04-05 14:17 -------
Created an attachment (id=11211)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11211&action=view)
Preprocessed source demonstrating bug

Bug is at line 2585/2586 of attached file


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044

[Bug rtl-optimization/27044] Loop variables incorrectly initialized with optimization on

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2006-04-05 14:26 -------
It's hard to verify with this big (non-executable) testcase.  Is there a chance
you can strengthen your claim?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044

[Bug rtl-optimization/27044] Loop variables incorrectly initialized with optimization on

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-04-05 18:27 -------
Can you try 4.0.3?  Otherwise just report this to Apple instead as you are
using Apple's hacked up Compiler.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044

[Bug rtl-optimization/27044] Loop variables incorrectly initialized with optimization on

[ned at bike-nomad dot com]

------- Comment #4 from ned at bike-nomad dot com  2006-04-07 02:50 -------
Tried 4.0.3 (compiled from source via Darwinports); works OK there.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044

[Bug rtl-optimization/27044] Loop variables incorrectly initialized with optimization on

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2006-04-07 03:17 -------
Closing as fixed pre the reporter.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044

[Bug rtl-optimization/27044] Loop variables incorrectly initialized with optimization on

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.0.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27044