re: gettext/src/hostname.c, ipv6 macro

[prapp]

gettext-0.11/src/hostname.c
refers to members of struct in6_addr not present on my system.

The relevant macro is:

#  define ipv6_ntop(buffer,addr) \
     sprintf (buffer, "%x:%x:%x:%x:%x:%x:%x:%x", \
              ntohs ((addr).in6_u.u6_addr16[0]), \
              ntohs ((addr).in6_u.u6_addr16[1]), \

called by:

   ipv6_ntop (buffer, *(const struct in6_addr*) h->h_addr_list[i]);


My struct in6_addr (which is maybe old ?) looks like the one found here:
     http://www.zvon.org/tmRFC/RFC2553/Output/chapter3.html#sub2

or here:
     http://ou800doc.caldera.com/SDK_netapi/sockC.TheIPv6sockaddrstructure.html

I wouldn't have noticed this, if my system had an inet_ntop, but it doesn't :(

Caveat: I'm not very conversant with IPV6.

rsync has a complicated replacement for inet_ntop, which I don't follow, but
I think they just cast the whole thing to a void * to start out with, and
then the complicated code is to watch for runs of zeros.

Anyway, I'll probably just undef the HAVE_IPV6 in my config.h, and
let you decide what you think about this. Feel free to contact me,
but as mentioned, I really don't know much about ipv6 socket structures.

Cordially,

Perry