[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] index out of bounds in qemu-0.10.2
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] index out of bounds in qemu-0.10.2 |
Date: |
Sat, 18 Apr 2009 21:25:56 +0300 |
On 4/17/09, Sergei Steshenko <address@hidden> wrote:
> Hello,
>
> I am compiling qemu-0.10.2 using the attached autogenerated 'configure'
> wrapper (if anybody is interested in 'configure' command line options I'm
> using_.
>
> I am using self-built gcc-4.3.3, my OS is SUSE 10.3, 32 bits.
>
> While running 'make' I've noticed this:
>
> 41 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/twl92230.c: In
> function ‘menelaus_load’:
> 42 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/hw.h:114: warning:
> array subscript is above array bounds
> 43 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/hw.h:114: warning:
> array subscript is above array bounds
> 44 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/hw.h:114: warning:
> array subscript is above array bounds
> 45 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/twl92230.c: In
> function ‘menelaus_save’:
> 46 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/hw.h:94: warning:
> array subscript is above array bounds
> 47 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/hw.h:94: warning:
> array subscript is above array bounds
> 48 /mnt/sdb8/sergei/AFSWD_debug/build/qemu-0.10.2/hw/hw.h:94: warning:
> array subscript is above array bounds
> .
>
> Once I had the same warnings compiling my own code, and 'gcc' was correct,
> so most likely it's correct in this case too.
>
> If so, please fix this.
My gcc and even sparse is completely silent, strange.
It's because of this area:
uint8_t dcdc[3];
is saved like this:
qemu_put_8s(f, &s->dcdc[3]);
qemu_put_8s(f, &s->dcdc[3]);
qemu_put_8s(f, &s->dcdc[3]);
and loaded like this:
qemu_get_8s(f, &s->dcdc[3]);
qemu_get_8s(f, &s->dcdc[3]);
qemu_get_8s(f, &s->dcdc[3]);
which is of course wrong.