Re: [PATCH 3/4] pc-bios/s390-ccw: Silence GCC 11 stringop-overflow warning

[Thomas Huth]

On 03/05/2021 11.30, Philippe Mathieu-Daudé wrote:
> On 5/3/21 11:00 AM, Cornelia Huck wrote:
> > On Sun,  2 May 2021 19:48:35 +0200
> > Thomas Huth <thuth@redhat.com> wrote:
> >
> > > From: Philippe Mathieu-Daudé <philmd@redhat.com>
> > >
> > > When building on Fedora 34 (gcc version 11.0.0 20210210) we get:
> > >
> > >    In file included from pc-bios/s390-ccw/main.c:11:
> > >    In function ‘memset’,
> > >        inlined from ‘boot_setup’ at pc-bios/s390-ccw/main.c:185:5,
> > >        inlined from ‘main’ at pc-bios/s390-ccw/main.c:288:5:
> > >    pc-bios/s390-ccw/libc.h:28:14: warning: writing 1 byte into a region of size 
> > > 0 [-Wstringop-overflow=]
> > >       28 |         p[i] = c;
> > >          |         ~~~~~^~~
> > >
> > > The offending code is:
> > >
> > >    memset((char *)S390EP, 0, 6);
> > >
> > > where S390EP is a const address:
> > >
> > >    #define S390EP 0x10008
> > >
> > > The compiler doesn't now how big that pointed area is, so assume its
> >
> > s/now/know/
> > s/assume/it assumes that/
>
> Oops, thanks. Thomas, do you want me to repost this patch fixed?

I can fix it up in my tree here, no need to resend.

 Thomas