[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-03-19 Thread Brian Murray
** Changed in: gcc-4.7 (Ubuntu)
   Status: Triaged = Invalid

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Title:
  Unreproducible ICEs on Cortex A15

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-03-04 Thread James M. Leddy
I'm taking this out of the OEM queue for now. Please reopen if you want
help with this bug.

** Changed in: oem-priority
   Status: In Progress = Won't Fix

** Changed in: oem-priority/raring
   Status: In Progress = Won't Fix

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  Unreproducible ICEs on Cortex A15

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-15 Thread James M. Leddy
** Changed in: oem-priority
   Status: New = In Progress

** Changed in: oem-priority/raring
   Status: New = In Progress

** Changed in: gcc-4.7 (Ubuntu)
   Status: New = Triaged

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Title:
  Unreproducible ICEs on Cortex A15

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-14 Thread James M. Leddy
Hi Dann,

Thanks for the reduced test case. I'm sure it will make diagnosing and
potentially bisecting a lot easier.

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  Unreproducible ICEs on Cortex A15

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-14 Thread Manoj Iyer
I was able to re-create the bug with this testcase. ICE happens with 4.7
compiler and not with 4.6.

gcc -O5 -c ./job.i 
./tools/src/make-3.82/job.c: In function 
‘construct_command_argv_internal.isra.1’:
./tools/src/make-3.82/job.c:3073:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See file:///usr/share/doc/gcc-4.7/README.Bugs for instructions.
The bug is not reproducible, so it is likely a hardware or OS problem.


** Attachment added: pre-Processed testcase
   
https://bugs.launchpad.net/ubuntu/+source/gcc-4.7/+bug/1116769/+attachment/3529096/+files/job.i

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Title:
  Unreproducible ICEs on Cortex A15

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Re: [Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-14 Thread Matthias Klose
Am 14.02.2013 21:34, schrieb Manoj Iyer:
 I was able to re-create the bug with this testcase. ICE happens with 4.7
 compiler and not with 4.6.

no, you are not:

 gcc -O5 -c ./job.i 
 ./tools/src/make-3.82/job.c: In function 
 ‘construct_command_argv_internal.isra.1’:
 ./tools/src/make-3.82/job.c:3073:1: internal compiler error: Segmentation 
 fault
 Please submit a full bug report,
 with preprocessed source if appropriate.
 See file:///usr/share/doc/gcc-4.7/README.Bugs for instructions.
 The bug is not reproducible, so it is likely a hardware or OS problem.

The bug is not reproducible, so it is likely a hardware or OS problem.

means, that the issue wasn't reproducible in a second run.

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-13 Thread Matthias Klose
the preprocessed source works for me

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Re: [Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-07 Thread dann frazier
On Wed, Feb 06, 2013 at 08:36:54PM -, Adam Conrad wrote:
 What kernel is this?  Since we don't actually ship any A15 kernels in
 the archive, I assume this is a custom deal?

The kernel is available in this PPA:
  https://launchpad.net/~arndale-team/+archive/ppa

git tree is here:
  http://kernel.ubuntu.com/git?p=hwe/ubuntu-quantal-arndale.git;a=summary

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Re: [Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-07 Thread dann frazier
On Wed, Feb 06, 2013 at 08:40:17PM -, Adam Conrad wrote:
 Also, is this a default ubuntu armhf toolchain being called with default
 options, or are you using a different -march/cpu/tune?

All defaults.

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Re: [Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-07 Thread dann frazier
On Wed, Feb 06, 2013 at 08:51:50PM -, James M. Leddy wrote:
 Hi Dann,
 
 What are the specific reproduction steps? For example, are you re-
 compiling mysql from source, or using debuild on the ubuntu specific
 branch?

Just rebuilding the package, e.g.:

  sudo apt-get build-dep mysql-5.5
  apt-get source -b mysql-5.5

 Also, to get a core on ubuntu you can follow these steps:
 
 $ sudo sysctl -w kernel.core_pattern=core
 $ ulimit -c unlimited
 $ gcc...

Yeah, tried that - and it wasn't working for me. I wondered if gcc was
doing something to block this, but I didn't investigate further.

 Please include a build log as well.

Will do.

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-07 Thread dann frazier
** Attachment added: Example failed build log.
   
https://bugs.launchpad.net/ubuntu/+source/gcc-4.7/+bug/1116769/+attachment/3519298/+files/mysql-5.5.buildlog

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-07 Thread dann frazier
** Changed in: oem-priority
   Status: Incomplete = New

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-07 Thread dann frazier
Here's a reduced reproducer:

ubuntu@s5:~$ while /usr/lib/gcc/arm-linux-gnueabihf/4.7/cc1 repro.c -quiet 
-march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -O2  -fPIC --param 
ssp-buffer-size=4 -o -  /dev/null; do echo -n .; done
/home/ubuntu/mysql/mysql-5.5-5.5.29/strings/dtoa.c: In function ‘my_gcvt’:
/home/ubuntu/mysql/mysql-5.5-5.5.29/strings/dtoa.c:441:1: internal compiler 
error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See file:///usr/share/doc/gcc-4.7/README.Bugs for instructions.


I started with the original compilation command (see below), created a 
preprocessed file using -E, then removed various flags after verifying I could 
still reproduce with them omitted.

// /usr/lib/gcc/arm-linux-gnueabihf/4.7/cc1 -quiet -I
/home/ubuntu/mysql/mysql-5.5-5.5.29/builddir/include -I
/home/ubuntu/mysql/mysql-5.5-5.5.29/include -imultilib . -imultiarch
arm-linux-gnueabihf -D _FORTIFY_SOURCE=2 -D DBUG_OFF -D HAVE_CONFIG_H -D
DISABLE_MYSQL_THREAD_H -D BIG_JOINS=1
/home/ubuntu/mysql/mysql-5.5-5.5.29/strings/dtoa.c -quiet -dumpbase
dtoa.c -march=armv7-a -mfloat-abi=hard -mfpu=vfpv3-d16 -mthumb -mtls-
dialect=gnu -auxbase-strip CMakeFiles/strings.dir/dtoa.c.o -O2 -Wformat
-Wformat-security -Werror=format-security -Wall -fstack-protector -fno-
strict-aliasing -fPIC --param ssp-buffer-size=4 -fstack-protector -o -
-frandom-seed=0

** Attachment added: preprocessed source
   
https://bugs.launchpad.net/ubuntu/+source/gcc-4.7/+bug/1116769/+attachment/3519537/+files/repro.c

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-06 Thread James M. Leddy
** Changed in: oem-priority
 Assignee: (unassigned) = James M. Leddy (jm-leddy)

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-06 Thread James M. Leddy
http://moxielogic.org/blog/?p=482

** Tags added: rls-r-incoming

** Changed in: oem-priority/r-series
 Assignee: (unassigned) = James M. Leddy (jm-leddy)

** Changed in: gcc-4.7 (Ubuntu)
 Assignee: (unassigned) = Brian Murray (brian-murray)

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-06 Thread Adam Conrad
What kernel is this?  Since we don't actually ship any A15 kernels in
the archive, I assume this is a custom deal?

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-06 Thread Adam Conrad
Also, is this a default ubuntu armhf toolchain being called with default
options, or are you using a different -march/cpu/tune?

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Title:
  Unreproducible ICEs on Cortex A15

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[Bug 1116769] Re: Unreproducible ICEs on Cortex A15

2013-02-06 Thread James M. Leddy
Hi Dann,

What are the specific reproduction steps? For example, are you re-
compiling mysql from source, or using debuild on the ubuntu specific
branch?

Also, to get a core on ubuntu you can follow these steps:

$ sudo sysctl -w kernel.core_pattern=core
$ ulimit -c unlimited
$ gcc...

Please include a build log as well.

** Changed in: oem-priority
   Status: New = Incomplete

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