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* [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc)
@ 2012-09-07 12:35 thierry.visonneau at cea dot fr
  2012-09-07 12:36 ` [Bug c++/54518] " thierry.visonneau at cea dot fr
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: thierry.visonneau at cea dot fr @ 2012-09-07 12:35 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54518

             Bug #: 54518
           Summary: A problem using -O2 with g++4.5.0 and g++4.6.0 (see
                    titi.cc)
    Classification: Unclassified
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: thierry.visonneau@cea.fr


Created attachment 28147
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28147
titi.cc

A problem using -O2 with g++4.5.0 and g++4.6.0

Using -O2 option with g++4.5.0 and g++4.6.0, the attached file titi.cc is
crashing.
It seems that the correct behavior is to obtain the following output :
titi : I=

Please find "test.list" attached that summarizes our tests, and also the
assembly code obtained with g++4.5.0 -O2 and g++4.6.0 -O2 :
- titi.g++440-O2.s
- titi.g++450-O2.s
<     movsbl    1(%rsp),%edi
> 	xorl	%edi, %edi

Thanks,
Best regards


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug c++/54518] A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc)
  2012-09-07 12:35 [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc) thierry.visonneau at cea dot fr
@ 2012-09-07 12:36 ` thierry.visonneau at cea dot fr
  2012-09-07 12:37 ` thierry.visonneau at cea dot fr
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: thierry.visonneau at cea dot fr @ 2012-09-07 12:36 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54518

--- Comment #1 from thierry.visonneau at cea dot fr 2012-09-07 12:36:23 UTC ---
Created attachment 28148
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28148
test.list


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug c++/54518] A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc)
  2012-09-07 12:35 [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc) thierry.visonneau at cea dot fr
  2012-09-07 12:36 ` [Bug c++/54518] " thierry.visonneau at cea dot fr
@ 2012-09-07 12:37 ` thierry.visonneau at cea dot fr
  2012-09-07 12:38 ` thierry.visonneau at cea dot fr
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: thierry.visonneau at cea dot fr @ 2012-09-07 12:37 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54518

--- Comment #2 from thierry.visonneau at cea dot fr 2012-09-07 12:37:06 UTC ---
Created attachment 28149
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28149
titi.g++440-O2.s


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug c++/54518] A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc)
  2012-09-07 12:35 [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc) thierry.visonneau at cea dot fr
  2012-09-07 12:36 ` [Bug c++/54518] " thierry.visonneau at cea dot fr
  2012-09-07 12:37 ` thierry.visonneau at cea dot fr
@ 2012-09-07 12:38 ` thierry.visonneau at cea dot fr
  2012-09-07 15:22 ` redi at gcc dot gnu.org
  2012-09-08  8:55 ` paolo.carlini at oracle dot com
  4 siblings, 0 replies; 6+ messages in thread
From: thierry.visonneau at cea dot fr @ 2012-09-07 12:38 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54518

--- Comment #3 from thierry.visonneau at cea dot fr 2012-09-07 12:38:11 UTC ---
Created attachment 28150
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28150
titi.g++450-O2.s


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug c++/54518] A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc)
  2012-09-07 12:35 [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc) thierry.visonneau at cea dot fr
                   ` (2 preceding siblings ...)
  2012-09-07 12:38 ` thierry.visonneau at cea dot fr
@ 2012-09-07 15:22 ` redi at gcc dot gnu.org
  2012-09-08  8:55 ` paolo.carlini at oracle dot com
  4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2012-09-07 15:22 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54518

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
      Known to work|                            |4.6.2
      Known to fail|                            |4.4.3, 4.5.2, 4.6.1

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-09-07 15:22:22 UTC ---
works fine with 4.6.2 and later, so the problem seems to be fixed in all
current releases


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [Bug c++/54518] A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc)
  2012-09-07 12:35 [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc) thierry.visonneau at cea dot fr
                   ` (3 preceding siblings ...)
  2012-09-07 15:22 ` redi at gcc dot gnu.org
@ 2012-09-08  8:55 ` paolo.carlini at oracle dot com
  4 siblings, 0 replies; 6+ messages in thread
From: paolo.carlini at oracle dot com @ 2012-09-08  8:55 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54518

Paolo Carlini <paolo.carlini at oracle dot com> changed:

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

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-09-08 08:54:51 UTC ---
Fixed.


^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-09-08  8:55 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-09-07 12:35 [Bug c++/54518] New: A problem using -O2 with g++4.5.0 and g++4.6.0 (see titi.cc) thierry.visonneau at cea dot fr
2012-09-07 12:36 ` [Bug c++/54518] " thierry.visonneau at cea dot fr
2012-09-07 12:37 ` thierry.visonneau at cea dot fr
2012-09-07 12:38 ` thierry.visonneau at cea dot fr
2012-09-07 15:22 ` redi at gcc dot gnu.org
2012-09-08  8:55 ` paolo.carlini at oracle dot com

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