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Remove configure probe for sockaddr_in6 and require AF_INET6.

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SUSv3 <netinet/in.h> defines struct sockaddr_in6, and all targeted Unix
systems have it.  Windows has it in <ws2ipdef.h>.  Remove the configure
probe, the macro and a small amount of dead code.

Also remove a mention of IPv6-less builds from the documentation, since
there aren't any.

This is similar to commits f5580882 and 077bf2f2 for Unix sockets.  Even
though AF_INET6 is an "optional" component of SUSv3, there are no known
modern operating system without it, and it seems even less likely to be
omitted from future systems than AF_UNIX.

Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA+hUKGKErNfhmvb_H0UprEmp4LPzGN06yR2_0tYikjzB-2ECMw@mail.gmail.com
This commit is contained in:
Thomas Munro
2022-08-26 10:13:22 +12:00
parent 28ec316787
commit bcc8b14ef6
16 changed files with 7 additions and 105 deletions
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2
src/interfaces/libpq/fe-connect.c
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@@ -1652,7 +1652,6 @@ getHostaddr(PGconn *conn, char *host_addr, int host_addr_len)
host_addr, host_addr_len) == NULL)
host_addr[0] = '\0';
}
#ifdef HAVE_IPV6
else if (addr->ss_family == AF_INET6)
{
if (pg_inet_net_ntop(AF_INET6,
@@ -1661,7 +1660,6 @@ getHostaddr(PGconn *conn, char *host_addr, int host_addr_len)
host_addr, host_addr_len) == NULL)
host_addr[0] = '\0';
}
#endif
else
host_addr[0] = '\0';
}