Peter Maydell, le ven. 01 mars 2019 09:49:26 +0000, a ecrit:
> On Fri, 1 Mar 2019 at 09:39, Greg Kurz <gr...@kaod.org> wrote:
> >
> > Build fails with gcc 9:
> >
> > CC slirp/ndp_table.o
> > slirp/ndp_table.c: In function ‘ndp_table_add’:
> > slirp/ndp_table.c:31:23: error: taking address of packed member of ‘struct
> > ndpentry’ may result in an unaligned pointer value
> > [-Werror=address-of-packed-member]
> > 31 | if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > slirp/ndp_table.c: In function ‘ndp_table_search’:
> > slirp/ndp_table.c:75:23: error: taking address of packed member of ‘struct
> > ndpentry’ may result in an unaligned pointer value
> > [-Werror=address-of-packed-member]
> > 75 | if (in6_equal(&ndp_table->table[i].ip_addr, &ip_addr)) {
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > cc1: all warnings being treated as errors
> >
> > The ndpentry structure isn't used to model on-the-wire data or anything
> > else that would care for the struct layout. It doesn't need to be packed
> > actually. Just drop SLIRP_PACKED.
> >
> > Signed-off-by: Greg Kurz <gr...@kaod.org>
> > ---
> > v2: - don't check the struct size at compile time
> > ---
> > slirp/slirp.h | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/slirp/slirp.h b/slirp/slirp.h
> > index 752a4cd8c81c..8068ba1d1e9e 100644
> > --- a/slirp/slirp.h
> > +++ b/slirp/slirp.h
> > @@ -106,7 +106,7 @@ bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
> > struct ndpentry {
> > unsigned char eth_addr[ETH_ALEN]; /* sender hardware address */
> > struct in6_addr ip_addr; /* sender IP address */
> > -} SLIRP_PACKED;
> > +};
> >
> > #define NDP_TABLE_SIZE 16
>
> Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Applied to my tree, thanks!
Samuel
