Re: [Xen-devel] [PATCH 1/5] multiboot2: Fix information request tag size calculation

["Lennart Sorensen" <lsorense@xxxxxxxxxxxxxxxxxxx>]

On Fri, Jan 30, 2015 at 01:52:09PM -0700, Ben Hildred wrote:
> Why do you want the size of a pointer instead of the size of the structure?

Isn't *request_tag the dereferenced pointer, and hence is the size of
the structure, where as before it was the size of a pointer?

-- 
Len Sorensen

> On Fri, Jan 30, 2015 at 10:59 AM, Daniel Kiper <daniel.kiper@xxxxxxxxxx>
> wrote:
> 
> > Signed-off-by: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
> > ---
> >  grub-core/loader/multiboot_mbi2.c |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/grub-core/loader/multiboot_mbi2.c
> > b/grub-core/loader/multiboot_mbi2.c
> > index 6f74aee..d7c19bc 100644
> > --- a/grub-core/loader/multiboot_mbi2.c
> > +++ b/grub-core/loader/multiboot_mbi2.c
> > @@ -150,7 +150,7 @@ grub_multiboot_load (grub_file_t file, const char
> > *filename)
> >             = (struct multiboot_header_tag_information_request *) tag;
> >           if (request_tag->flags & MULTIBOOT_HEADER_TAG_OPTIONAL)
> >             break;
> > -         for (i = 0; i < (request_tag->size - sizeof (request_tag))
> > +         for (i = 0; i < (request_tag->size - sizeof (*request_tag))
> >                  / sizeof (request_tag->requests[0]); i++)
> >             switch (request_tag->requests[i])
> >               {
> > --
> > 1.7.10.4
> >
> >
> > _______________________________________________
> > Grub-devel mailing list
> > Grub-devel@xxxxxxx
> > https://lists.gnu.org/mailman/listinfo/grub-devel
> >
> 
> 
> 
> -- 
> --
> Ben Hildred
> Automation Support Services
> 303 815 6721

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