linux-kernel - Re: [PATCH] Fix compile error in arch/x86/kernel/syscall

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Message-id: <20081203212345.GD7080@clouds>
Date:	Wed, 03 Dec 2008 16:23:45 -0500
From:	Jody McIntyre <scjody@....com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com
Subject: Re: [PATCH] Fix compile error in arch/x86/kernel/syscall_64.c

On Wed, Dec 03, 2008 at 12:17:47PM -0800, H. Peter Anvin wrote:

> I was particularly suspicious because you said "one of my systems",
> which implies other systems don't behave that way...

I have one other system that can build this kernel, and one that gets
further.  The differences are gcc version (all distro-supplied),
.config, and in one case X86_32 vs. X86_64.

> Now, the syscall_64.i you sent me is the working version, right?  Could
> you send me the non-working version, too?

That's the non-working version.  I just verified:

root@vm1:~/linux-2.6# make clean && make arch/x86/kernel/syscall_64.o
[...]
  CC      arch/x86/kernel/syscall_64.o
arch/x86/kernel/syscall_64.c:27: error: array index in initializer exceeds array bounds
arch/x86/kernel/syscall_64.c:27: error: (near initialization for ‘sys_call_table’)
arch/x86/kernel/syscall_64.c:27: warning: excess elements in array initializer
arch/x86/kernel/syscall_64.c:27: warning: (near initialization for ‘sys_call_table’)
make[1]: *** [arch/x86/kernel/syscall_64.o] Error 1
make: *** [arch/x86/kernel/syscall_64.o] Error 2
root@vm1:~/linux-2.6# make arch/x86/kernel/syscall_64.i
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  SYMLINK include/asm -> include/asm-x86
  CALL    scripts/checksyscalls.sh
  CPP     arch/x86/kernel/syscall_64.i

The resulting .i file is identical (checked md5sum) to the one on the
http site: http://downloads.lustre.org/people/scjody/lkml/syscall_64.i

Cheers,
Jody
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