[PATCH] in6_addr: add 64-bit union accessors

[Rich Felker]

On Sun, Mar 29, 2015 at 04:15:22PM -0700, Shawn Landden wrote:
> 64-bit architectures are common so this makes sense to have.
> 64-bit arches were not so common 1997-02-16.
> 
> I'm not going to change the ChangeLog because that practice
> breaks git merges.
> 
> Bugzilla: #18117
> Signed-off-by: Shawn Landden <shawn@churchofgit.com>
> ---
>  inet/netinet/in.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/inet/netinet/in.h b/inet/netinet/in.h
> index f541c58..b64b559 100644
> --- a/inet/netinet/in.h
> +++ b/inet/netinet/in.h
> @@ -214,12 +214,14 @@ struct in6_addr
>  #ifdef __USE_MISC
>  	uint16_t __u6_addr16[8];
>  	uint32_t __u6_addr32[4];
> +	uint64_t __u6_addr64[2];
>  #endif

This breaks ABI by changing the alignment requirement from 4 to 8. I
think that's a show-stopper for this proposal.

Rich