ICE with GCC 4.1

ICE with GCC 4.1

[Ludovic Courtès]

Hi,

Does anyone get the following ICE when compiling the latest kernel (from
David Miller's Git tree) on sparc32:

    CC      kernel/sched.o
  kernel/sched.c: In function 'effective_prio':
  kernel/sched.c:744: internal compiler error: in choose_multiplier, at expmed.c:3304
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <URL:http://gcc.gnu.org/bugs.html> for instructions.
  For Debian GNU/Linux specific bug reporting instructions,
  see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.

The compiler is gcc-4.1 from Debian unstable:

  gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)

Should I be using another version?

Thanks,
Ludovic.

Re: ICE with GCC 4.1

[Jan Engelhardt]

On May 1 2007 20:48, Ludovic Courtès wrote:
>
>Hi,
>
>Does anyone get the following ICE when compiling the latest kernel (from
>David Miller's Git tree) on sparc32:

Does it always error out at the same point? You might want to use a memory
tester.

>
>    CC      kernel/sched.o
>  kernel/sched.c: In function 'effective_prio':
>  kernel/sched.c:744: internal compiler error: in choose_multiplier, at expmed.c:3304
>  Please submit a full bug report,
>  with preprocessed source if appropriate.
>  See <URL:http://gcc.gnu.org/bugs.html> for instructions.
>  For Debian GNU/Linux specific bug reporting instructions,
>  see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
>
>The compiler is gcc-4.1 from Debian unstable:
>
>  gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
>
>Should I be using another version?
>
>Thanks,
>Ludovic.
>
>-
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Jan
-- 

Re: ICE with GCC 4.1

[David Miller]

From: Jan Engelhardt <jengelh@linux01.gwdg.de>
Date: Wed, 2 May 2007 12:20:25 +0200 (MEST)

> 
> On May 1 2007 20:48, Ludovic Courtès wrote:
> >
> >Hi,
> >
> >Does anyone get the following ICE when compiling the latest kernel (from
> >David Miller's Git tree) on sparc32:
> 
> Does it always error out at the same point? You might want to use a memory
> tester.

It's more likely to be a cache or TLB coherency bug in the sparc32
kernel than a real hardware memory problem, actually.

Re: ICE with GCC 4.1

[Ludovic Courtès]

Hi,

Jan Engelhardt <jengelh@linux01.gwdg.de> writes:

> Does it always error out at the same point? You might want to use a memory
> tester.

Yes, always at the same point, which led me to think it was more of a
software problem.  I even reported the same error while compiling an
older kernel a while back:

  http://article.gmane.org/gmane.linux.ports.sparc/6239

Back then, using GCC 3 wouldn't help either:

  http://article.gmane.org/gmane.linux.ports.sparc/6290

Am I really the only one seeing this?  Which compiler do distros use?

Thanks,
Ludovic.