Update Socket to CPAN version 2.024.

'porting/customized.t --regen' for Socket.pm and .xs

perldelta entry for Socket 2.020 to 2.024 upgrade.

5 files changed, 219 insertions, 74 deletions

diff --git a/cpan/Socket/Makefile.PL b/cpan/Socket/Makefile.PL
index 3bad65516d..7a6aa7186b 100644
--- a/cpan/Socket/Makefile.PL
+++ b/cpan/Socket/Makefile.PL
@@ -14,7 +14,7 @@ sub check_for
 {
     my %args = @_;
     return if $ENV{PERL_CORE};
-    return if defined $Config{$args{confkey}};
+    return if defined $args{confkey} and defined $Config{$args{confkey}};
 
     require ExtUtils::CBuilder;
     $cb ||= ExtUtils::CBuilder->new( quiet => 1 );
@@ -77,12 +77,13 @@ sub check_for_func
 }
 
 my %defines = (
-    # -Dfoo               func()        $Config{key}
-    HAS_GETADDRINFO => [ "getaddrinfo", "d_getaddrinfo" ],
-    HAS_GETNAMEINFO => [ "getnameinfo", "d_getnameinfo" ],
-    HAS_INET_ATON   => [ "inet_aton",   "d_inetaton" ],
-    HAS_INETNTOP    => [ "inet_ntop",   "d_inetntop" ],
-    HAS_INETPTON    => [ "inet_pton",   "d_inetpton" ],
+    # -Dfoo                func()         $Config{key}
+    HAS_GETADDRINFO  => [ "getaddrinfo",  "d_getaddrinfo" ],
+    HAS_GETNAMEINFO  => [ "getnameinfo",  "d_getnameinfo" ],
+    HAS_GAI_STRERROR => [ "gai_strerror" ],
+    HAS_INET_ATON    => [ "inet_aton",    "d_inetaton" ],
+    HAS_INETNTOP     => [ "inet_ntop",    "d_inetntop" ],
+    HAS_INETPTON     => [ "inet_pton",    "d_inetpton" ],
 );
 
 foreach my $define ( sort keys %defines ) {
@@ -177,20 +178,25 @@ my @names = (
 
 	IOV_MAX
 
-	IP_ADD_MEMBERSHIP IP_ADD_SOURCE_MEMBERSHIP IP_DROP_MEMBERSHIP
-	IP_DROP_SOURCE_MEMBERSHIP IP_HDRINCL IP_MULTICAST_IF IP_MULTICAST_LOOP
-	IP_MULTICAST_TTL IP_OPTIONS IP_RECVOPTS IP_RECVRETOPTS IP_RETOPTS IP_TOS
-	IP_TTL
+	IP_ADD_MEMBERSHIP IP_ADD_SOURCE_MEMBERSHIP IP_BIND_ADDRESS_NO_PORT
+	IP_DROP_MEMBERSHIP IP_DROP_SOURCE_MEMBERSHIP IP_FREEBIND IP_HDRINCL
+	IP_MULTICAST_ALL IP_MULTICAST_IF IP_MULTICAST_LOOP IP_MULTICAST_TTL
+	IP_MTU IP_MTU_DISCOVER IP_NODEFRAG IP_OPTIONS IP_RECVERR IP_RECVOPTS
+	IP_RECVRETOPTS IP_RETOPTS IP_TOS IP_TRANSPARENT IP_TTL
+
+	IP_PMTUDISC_DO IP_PMTUDISC_DONT IP_PMTUDISC_PROBE IP_PMTUDISC_WANT
 
 	IPTOS_LOWDELAY IPTOS_THROUGHPUT IPTOS_RELIABILITY IPTOS_MINCOST
 
-	IPV6_ADD_MEMBERSHIP IPV6_DROP_MEMBERSHIP IPV6_JOIN_GROUP
+	IPV6_ADDRFROM IPV6_ADD_MEMBERSHIP IPV6_DROP_MEMBERSHIP IPV6_JOIN_GROUP
 	IPV6_LEAVE_GROUP IPV6_MTU IPV6_MTU_DISCOVER IPV6_MULTICAST_HOPS
-	IPV6_MULTICAST_IF IPV6_MULTICAST_LOOP IPV6_UNICAST_HOPS IPV6_V6ONLY
+	IPV6_MULTICAST_IF IPV6_MULTICAST_LOOP IPV6_RECVERR IPV6_ROUTER_ALERT
+	IPV6_UNICAST_HOPS IPV6_V6ONLY
 
 	MSG_BCAST MSG_BTAG MSG_CTLFLAGS MSG_CTLIGNORE MSG_DONTWAIT MSG_EOF
-	MSG_EOR MSG_ERRQUEUE MSG_ETAG MSG_FIN MSG_MAXIOVLEN MSG_MCAST
-	MSG_NOSIGNAL MSG_RST MSG_SYN MSG_TRUNC MSG_URG MSG_WAITALL MSG_WIRE
+	MSG_EOR MSG_ERRQUEUE MSG_ETAG MSG_FASTOPEN MSG_FIN MSG_MAXIOVLEN
+	MSG_MCAST MSG_NOSIGNAL MSG_RST MSG_SYN MSG_TRUNC MSG_URG MSG_WAITALL
+	MSG_WIRE
 
 	NI_DGRAM NI_IDN NI_IDN_ALLOW_UNASSIGNED NI_IDN_USE_STD3_ASCII_RULES
 	NI_NAMEREQD NI_NOFQDN NI_NUMERICHOST NI_NUMERICSERV
@@ -213,18 +219,19 @@ my @names = (
 	SO_ACCEPTCONN SO_ATTACH_FILTER SO_BACKLOG SO_BINDTODEVICE SO_BROADCAST
 	SO_BSDCOMPAT SO_BUSY_POLL SO_CHAMELEON SO_DEBUG SO_DETACH_FILTER
 	SO_DGRAM_ERRIND SO_DOMAIN SO_DONTLINGER SO_DONTROUTE SO_ERROR SO_FAMILY
-	SO_KEEPALIVE SO_LINGER SO_MARK SO_OOBINLINE SO_PASSCRED SO_PASSIFNAME
-	SO_PEEK_OFF SO_PEERCRED SO_PRIORITY SO_PROTOCOL SO_PROTOTYPE SO_RCVBUF
-	SO_RCVLOWAT SO_RCVTIMEO SO_REUSEADDR SO_REUSEPORT
-	SO_SECURITY_AUTHENTICATION SO_SECURITY_ENCRYPTION_NETWORK
-	SO_SECURITY_ENCRYPTION_TRANSPORT SO_SNDBUF SO_SNDLOWAT SO_SNDTIMEO
-	SO_STATE SO_TIMESTAMP SO_TYPE SO_USELOOPBACK SO_XOPEN SO_XSE
-
-	TCP_CONGESTION TCP_CONNECTIONTIMEOUT TCP_CORK TCP_DEFER_ACCEPT TCP_INFO
-	TCP_INIT_CWND TCP_KEEPALIVE TCP_KEEPCNT TCP_KEEPIDLE TCP_KEEPINTVL
-	TCP_LINGER2 TCP_MAXRT TCP_MAXSEG TCP_MD5SIG TCP_NODELAY TCP_NOOPT
-	TCP_NOPUSH TCP_QUICKACK TCP_SACK_ENABLE TCP_STDURG TCP_SYNCNT
-	TCP_WINDOW_CLAMP
+	SO_KEEPALIVE SO_LINGER SO_LOCK_FILTER SO_MARK SO_OOBINLINE SO_PASSCRED
+	SO_PASSIFNAME SO_PEEK_OFF SO_PEERCRED SO_PRIORITY SO_PROTOCOL
+	SO_PROTOTYPE SO_RCVBUF SO_RCVBUFFORCE SO_RCVLOWAT SO_RCVTIMEO
+	SO_REUSEADDR SO_REUSEPORT SO_RXQ_OVFL SO_SECURITY_AUTHENTICATION
+	SO_SECURITY_ENCRYPTION_NETWORK SO_SECURITY_ENCRYPTION_TRANSPORT
+	SO_SNDBUF SO_SNDBUFFORCE SO_SNDLOWAT SO_SNDTIMEO SO_STATE SO_TIMESTAMP
+	SO_TYPE SO_USELOOPBACK SO_XOPEN SO_XSE
+
+	TCP_CONGESTION TCP_CONNECTIONTIMEOUT TCP_CORK TCP_DEFER_ACCEPT
+	TCP_FASTOPEN TCP_INFO TCP_INIT_CWND TCP_KEEPALIVE TCP_KEEPCNT
+	TCP_KEEPIDLE TCP_KEEPINTVL TCP_LINGER2 TCP_MAXRT TCP_MAXSEG
+	TCP_MD5SIG TCP_NODELAY TCP_NOOPT TCP_NOPUSH TCP_QUICKACK
+	TCP_SACK_ENABLE TCP_STDURG TCP_SYNCNT TCP_WINDOW_CLAMP
 
 	UIO_MAXIOV
     ),
diff --git a/cpan/Socket/Socket.pm b/cpan/Socket/Socket.pm
index 5b187facf2..64e18ad25e 100644
--- a/cpan/Socket/Socket.pm
+++ b/cpan/Socket/Socket.pm
@@ -3,7 +3,7 @@ package Socket;
 use strict;
 { use 5.006001; }
 
-our $VERSION = '2.020_03'; # patched in perl5.git
+our $VERSION = '2.024';
 
 =head1 NAME
 
@@ -108,6 +108,10 @@ C<SOL_SOCKET> level.
 Socket option name constants for IPv4 socket options at the C<IPPROTO_IP>
 level.
 
+=head2 IP_PMTUDISC_WANT, IP_PMTUDISC_DONT, ...
+
+Socket option value contants for C<IP_MTU_DISCOVER> socket option.
+
 =head2 IPTOS_LOWDELAY, IPTOS_THROUGHPUT, IPTOS_RELIABILITY, ...
 
 Socket option value constants for C<IP_TOS> socket option.
@@ -180,6 +184,9 @@ arguments packed in and C<AF_INET> filled in. For Internet domain sockets,
 this structure is normally what you need for the arguments in bind(),
 connect(), and send().
 
+An undefined $port argument is taken as zero; an undefined $ip_address is
+considered a fatal error.
+
 =head2 ($port, $ip_address) = unpack_sockaddr_in $sockaddr
 
 Takes a C<sockaddr_in> structure (as returned by pack_sockaddr_in(),
@@ -209,6 +216,9 @@ inet_pton()), optionally a scope ID number, and optionally a flow label
 number. Returns the C<sockaddr_in6> structure with those arguments packed in
 and C<AF_INET6> filled in. IPv6 equivalent of pack_sockaddr_in().
 
+An undefined $port argument is taken as zero; an undefined $ip6_address is
+considered a fatal error.
+
 =head2 ($port, $ip6_address, $scope_id, $flowinfo) = unpack_sockaddr_in6 $sockaddr
 
 Takes a C<sockaddr_in6> structure. Returns a list of four elements: the port
@@ -384,7 +394,7 @@ Restrict to only generating addresses for this protocol
 The return value will be a list; the first value being an error indication,
 followed by a list of address structures (if no error occurred).
 
-The error value will be a dualvar; comparable to the C<EI_*> error constants,
+The error value will be a dualvar; comparable to the C<EAI_*> error constants,
 or printable as a human-readable error message string. If no error occurred it
 will be zero numerically and an empty string.
 
@@ -452,7 +462,7 @@ constants, or defaults to 0 if unspecified.
 The return value will be a list; the first value being an error condition,
 followed by the hostname and service name.
 
-The error value will be a dualvar; comparable to the C<EI_*> error constants,
+The error value will be a dualvar; comparable to the C<EAI_*> error constants,
 or printable as a human-readable error message string. The host and service
 names will be plain strings.
 
@@ -722,11 +732,11 @@ our @EXPORT = qw(
 	SO_SECURITY_ENCRYPTION_TRANSPORT SO_SNDBUF SO_SNDLOWAT SO_SNDTIMEO
 	SO_STATE SO_TYPE SO_USELOOPBACK SO_XOPEN SO_XSE
 
-	IP_OPTIONS IP_HDRINCL IP_TOS IP_TTL IP_RECVOPTS IP_RECVRETOPTS
-	IP_RETOPTS
+	IP_HDRINCL IP_OPTIONS IP_RECVOPTS IP_RECVRETOPTS IP_RETOPTS IP_TOS
+	IP_TTL
 
 	MSG_BCAST MSG_BTAG MSG_CTLFLAGS MSG_CTLIGNORE MSG_CTRUNC MSG_DONTROUTE
-	MSG_DONTWAIT MSG_EOF MSG_EOR MSG_ERRQUEUE MSG_ETAG MSG_FIN
+	MSG_DONTWAIT MSG_EOF MSG_EOR MSG_ERRQUEUE MSG_ETAG MSG_FASTOPEN MSG_FIN
 	MSG_MAXIOVLEN MSG_MCAST MSG_NOSIGNAL MSG_OOB MSG_PEEK MSG_PROXY MSG_RST
 	MSG_SYN MSG_TRUNC MSG_URG MSG_WAITALL MSG_WIRE
 
@@ -756,27 +766,33 @@ our @EXPORT_OK = qw(
 
 	SOCK_NONBLOCK SOCK_CLOEXEC
 
-	IP_ADD_MEMBERSHIP IP_ADD_SOURCE_MEMBERSHIP IP_DROP_MEMBERSHIP
-	IP_DROP_SOURCE_MEMBERSHIP IP_MULTICAST_IF IP_MULTICAST_LOOP
-	IP_MULTICAST_TTL
+	IP_ADD_MEMBERSHIP IP_ADD_SOURCE_MEMBERSHIP IP_BIND_ADDRESS_NO_PORT
+	IP_DROP_MEMBERSHIP IP_DROP_SOURCE_MEMBERSHIP IP_FREEBIND
+	IP_MULTICAST_ALL IP_MULTICAST_IF IP_MULTICAST_LOOP IP_MULTICAST_TTL
+	IP_MTU IP_MTU_DISCOVER IP_NODEFRAG IP_RECVERR IP_TRANSPARENT
 
 	IPPROTO_IP IPPROTO_IPV6 IPPROTO_RAW IPPROTO_ICMP IPPROTO_IGMP
 	IPPROTO_TCP IPPROTO_UDP IPPROTO_GRE IPPROTO_ESP IPPROTO_AH
 	IPPROTO_SCTP
 
+	IP_PMTUDISC_DO IP_PMTUDISC_DONT IP_PMTUDISC_PROBE IP_PMTUDISC_WANT
+
 	IPTOS_LOWDELAY IPTOS_THROUGHPUT IPTOS_RELIABILITY IPTOS_MINCOST
 
-	TCP_CONGESTION TCP_CONNECTIONTIMEOUT TCP_CORK TCP_DEFER_ACCEPT TCP_INFO
-	TCP_INIT_CWND TCP_KEEPALIVE TCP_KEEPCNT TCP_KEEPIDLE TCP_KEEPINTVL
-	TCP_LINGER2 TCP_MAXRT TCP_MAXSEG TCP_MD5SIG TCP_NODELAY TCP_NOOPT
-	TCP_NOPUSH TCP_QUICKACK TCP_SACK_ENABLE TCP_STDURG TCP_SYNCNT
-	TCP_WINDOW_CLAMP
+	TCP_CONGESTION TCP_CONNECTIONTIMEOUT TCP_CORK TCP_DEFER_ACCEPT
+	TCP_FASTOPEN TCP_INFO TCP_INIT_CWND TCP_KEEPALIVE TCP_KEEPCNT
+	TCP_KEEPIDLE TCP_KEEPINTVL TCP_LINGER2 TCP_MAXRT TCP_MAXSEG
+	TCP_MD5SIG TCP_NODELAY TCP_NOOPT TCP_NOPUSH TCP_QUICKACK
+	TCP_SACK_ENABLE TCP_STDURG TCP_SYNCNT TCP_WINDOW_CLAMP
 
 	IN6ADDR_ANY IN6ADDR_LOOPBACK
 
-	IPV6_ADD_MEMBERSHIP IPV6_DROP_MEMBERSHIP IPV6_JOIN_GROUP
+	IPV6_ADDRFROM IPV6_ADD_MEMBERSHIP IPV6_DROP_MEMBERSHIP IPV6_JOIN_GROUP
 	IPV6_LEAVE_GROUP IPV6_MTU IPV6_MTU_DISCOVER IPV6_MULTICAST_HOPS
-	IPV6_MULTICAST_IF IPV6_MULTICAST_LOOP IPV6_UNICAST_HOPS IPV6_V6ONLY
+	IPV6_MULTICAST_IF IPV6_MULTICAST_LOOP IPV6_RECVERR IPV6_ROUTER_ALERT
+	IPV6_UNICAST_HOPS IPV6_V6ONLY
+
+	SO_LOCK_FILTER SO_RCVBUFFORCE SO_SNDBUFFORCE
 
 	pack_ip_mreq unpack_ip_mreq pack_ip_mreq_source unpack_ip_mreq_source
 
diff --git a/cpan/Socket/Socket.xs b/cpan/Socket/Socket.xs
index 3b1d70eaf4..e44a3966af 100644
--- a/cpan/Socket/Socket.xs
+++ b/cpan/Socket/Socket.xs
@@ -473,6 +473,65 @@ not_here(const char *s)
 
 #include "const-c.inc"
 
+#if defined(HAS_GETADDRINFO) && !defined(HAS_GAI_STRERROR)
+static const char *gai_strerror(int err)
+{
+  switch (err)
+  {
+#ifdef EAI_ADDRFAMILY
+  case EAI_ADDRFAMILY:
+    return "Address family for hostname is not supported.";
+#endif
+#ifdef EAI_AGAIN
+  case EAI_AGAIN:
+    return "The name could not be resolved at this time.";
+#endif
+#ifdef EAI_BADFLAGS
+  case EAI_BADFLAGS:
+    return "The flags parameter has an invalid value.";
+#endif
+#ifdef EAI_FAIL
+  case EAI_FAIL:
+    return "A non-recoverable error occurred while resolving the name.";
+#endif
+#ifdef EAI_FAMILY
+  case EAI_FAMILY:
+    return "The address family was not recognized or length is invalid.";
+#endif
+#ifdef EAI_MEMORY
+  case EAI_MEMORY:
+    return "A memory allocation failure occurred.";
+#endif
+#ifdef EAI_NODATA
+  case EAI_NODATA:
+    return "No address is associated with the hostname.";
+#endif
+#ifdef EAI_NONAME
+  case EAI_NONAME:
+    return "The name does not resolve for the supplied parameters.";
+#endif
+#ifdef EAI_OVERFLOW
+  case EAI_OVERFLOW:
+    return "An argument buffer overflowed.";
+#endif
+#ifdef EAI_SERVICE
+  case EAI_SERVICE:
+    return "The service parameter was not recognized for the specified socket type.";
+#endif
+#ifdef EAI_SOCKTYPE
+  case EAI_SOCKTYPE:
+    return "The specified socket type was not recognized.";
+#endif
+#ifdef EAI_SYSTEM
+  case EAI_SYSTEM:
+    return "A system error occurred - see errno.";
+#endif
+  default:
+    return "Unknown error in getaddrinfo().";
+  }
+}
+#endif
+
 #ifdef HAS_GETADDRINFO
 static SV *err_to_SV(pTHX_ int err)
 {
@@ -693,13 +752,13 @@ inet_aton(host)
 		ST(0) = sv_2mortal(newSVpvn((char *)&ip_address, sizeof(ip_address)));
 		XSRETURN(1);
 	}
-
+#ifdef HAS_GETHOSTBYNAME
 	phe = gethostbyname(host);
 	if (phe && phe->h_addrtype == AF_INET && phe->h_length == 4) {
 		ST(0) = sv_2mortal(newSVpvn((char *)phe->h_addr, phe->h_length));
 		XSRETURN(1);
 	}
-
+#endif
 	XSRETURN_UNDEF;
 	}
 
@@ -758,11 +817,17 @@ pack_sockaddr_un(pathname)
 	char * pathname_pv;
 	int addr_len;
 
+	if (!SvOK(pathname))
+	    croak("Undefined path for %s", "Socket::pack_sockaddr_un");
+
 	Zero(&sun_ad, sizeof(sun_ad), char);
 	sun_ad.sun_family = AF_UNIX;
 	pathname_pv = SvPV(pathname,len);
-	if (len > sizeof(sun_ad.sun_path))
+	if (len > sizeof(sun_ad.sun_path)) {
+	    warn("Path length (%d) is longer than maximum supported length"
+	         " (%d) and will be truncated", len, sizeof(sun_ad.sun_path));
 	    len = sizeof(sun_ad.sun_path);
+	}
 #  ifdef OS2	/* Name should start with \socket\ and contain backslashes! */
 	{
 		int off;
@@ -818,8 +883,11 @@ unpack_sockaddr_un(sun_sv)
 #ifdef I_SYS_UN
 	struct sockaddr_un addr;
 	STRLEN sockaddrlen;
-	char * sun_ad = SvPVbyte(sun_sv,sockaddrlen);
-	int addr_len;
+	char * sun_ad;
+	int addr_len = 0;
+	if (!SvOK(sun_sv))
+	    croak("Undefined address for %s", "Socket::unpack_sockaddr_un");
+	sun_ad = SvPVbyte(sun_sv,sockaddrlen);
 #   if defined(__linux__) || defined(HAS_SOCKADDR_SA_LEN)
 	/* On Linux or *BSD sockaddrlen on sockets returned by accept, recvfrom,
 	   getpeername and getsockname is not equal to sizeof(addr). */
@@ -861,8 +929,8 @@ unpack_sockaddr_un(sun_sv)
 #   else
 		const int maxlen = (int)sizeof(addr.sun_path);
 #   endif
-		for (addr_len = 0; addr_len < maxlen
-		     && addr.sun_path[addr_len]; addr_len++);
+		while (addr_len < maxlen && addr.sun_path[addr_len])
+		     addr_len++;
 	}
 
 	ST(0) = sv_2mortal(newSVpvn(addr.sun_path, addr_len));
@@ -872,15 +940,20 @@ unpack_sockaddr_un(sun_sv)
 	}
 
 void
-pack_sockaddr_in(port, ip_address_sv)
-	unsigned short	port
+pack_sockaddr_in(port_sv, ip_address_sv)
+	SV *	port_sv
 	SV *	ip_address_sv
 	CODE:
 	{
 	struct sockaddr_in sin;
 	struct in_addr addr;
 	STRLEN addrlen;
+	unsigned short port = 0;
 	char * ip_address;
+	if (SvOK(port_sv))
+		port = SvUV(port_sv);
+	if (!SvOK(ip_address_sv))
+		croak("Undefined address for %s", "Socket::pack_sockaddr_in");
 	if (DO_UTF8(ip_address_sv) && !sv_utf8_downgrade(ip_address_sv, 1))
 		croak("Wide character in %s", "Socket::pack_sockaddr_in");
 	ip_address = SvPVbyte(ip_address_sv, addrlen);
@@ -912,7 +985,10 @@ unpack_sockaddr_in(sin_sv)
 	STRLEN sockaddrlen;
 	struct sockaddr_in addr;
 	SV *ip_address_sv;
-	char *	sin = SvPVbyte(sin_sv,sockaddrlen);
+	char * sin;
+	if (!SvOK(sin_sv))
+	    croak("Undefined address for %s", "Socket::unpack_sockaddr_in");
+	sin = SvPVbyte(sin_sv,sockaddrlen);
 	if (sockaddrlen != sizeof(addr)) {
 	    croak("Bad arg length for %s, length is %"UVuf", should be %"UVuf,
 		  "Socket::unpack_sockaddr_in", (UV)sockaddrlen, (UV)sizeof(addr));
@@ -935,17 +1011,22 @@ unpack_sockaddr_in(sin_sv)
 	}
 
 void
-pack_sockaddr_in6(port, sin6_addr, scope_id=0, flowinfo=0)
-	unsigned short	port
+pack_sockaddr_in6(port_sv, sin6_addr, scope_id=0, flowinfo=0)
+	SV *	port_sv
 	SV *	sin6_addr
 	unsigned long	scope_id
 	unsigned long	flowinfo
 	CODE:
 	{
 #ifdef HAS_SOCKADDR_IN6
+	unsigned short port = 0;
 	struct sockaddr_in6 sin6;
 	char * addrbytes;
 	STRLEN addrlen;
+	if (SvOK(port_sv))
+		port = SvUV(port_sv);
+	if (!SvOK(sin6_addr))
+		croak("Undefined address for %s", "Socket::pack_sockaddr_in6");
 	if (DO_UTF8(sin6_addr) && !sv_utf8_downgrade(sin6_addr, 1))
 		croak("Wide character in %s", "Socket::pack_sockaddr_in6");
 	addrbytes = SvPVbyte(sin6_addr, addrlen);
@@ -983,8 +1064,11 @@ unpack_sockaddr_in6(sin6_sv)
 #ifdef HAS_SOCKADDR_IN6
 	STRLEN addrlen;
 	struct sockaddr_in6 sin6;
-	char * addrbytes = SvPVbyte(sin6_sv, addrlen);
+	char * addrbytes;
 	SV *ip_address_sv;
+	if (!SvOK(sin6_sv))
+		croak("Undefined address for %s", "Socket::unpack_sockaddr_in6");
+	addrbytes = SvPVbyte(sin6_sv, addrlen);
 	if (addrlen != sizeof(sin6))
 		croak("Bad arg length for %s, length is %"UVuf", should be %"UVuf,
 		      "Socket::unpack_sockaddr_in6", (UV)addrlen, (UV)sizeof(sin6));
diff --git a/cpan/Socket/t/getaddrinfo.t b/cpan/Socket/t/getaddrinfo.t
index 6f8a324dfb..b33a3e7c6e 100644
--- a/cpan/Socket/t/getaddrinfo.t
+++ b/cpan/Socket/t/getaddrinfo.t
@@ -22,8 +22,8 @@ ok( defined $res[0]->{addr},
     '$res[0] addr is defined' );
 if (length $res[0]->{addr}) {
     is_deeply( [ unpack_sockaddr_in $res[0]->{addr} ],
-	       [ 80, inet_aton( "127.0.0.1" ) ],
-	       '$res[0] addr is {"127.0.0.1", 80}' );
+               [ 80, inet_aton( "127.0.0.1" ) ],
+               '$res[0] addr is {"127.0.0.1", 80}' );
 } else {
     fail( '$res[0] addr is empty: check $socksizetype' );
 }
@@ -50,8 +50,8 @@ cmp_ok( $err, "==", 0, '$err == 0 for host=127.0.0.1/service=undef' );
     cmp_ok( $err, "==", 0, '$err == 0 for host=$1' );
     ok( scalar @res > 0, '@res has results' );
     is( (unpack_sockaddr_in $res[0]->{addr})[1],
-	inet_aton( "127.0.0.1" ),
-	'$res[0] addr is {"127.0.0.1", ??}' );
+        inet_aton( "127.0.0.1" ),
+        '$res[0] addr is {"127.0.0.1", ??}' );
 }
 
 ( $err, @res ) = getaddrinfo( "", "80", { family => AF_INET, socktype => SOCK_STREAM, protocol => IPPROTO_TCP } );
@@ -90,13 +90,13 @@ SKIP: {
     # Some OSes return $err == 0 but no results
     ( $err, @res ) = getaddrinfo( $missinghost, "ftp", { socktype => SOCK_STREAM } );
     ok( $err != 0 || ( $err == 0 && @res == 0 ),
-	'$err != 0 or @res == 0 for host=TbK4jM2M0OS.lm57DWIyu4i/service=ftp/socktype=SOCK_STREAM' );
+        '$err != 0 or @res == 0 for host=TbK4jM2M0OS.lm57DWIyu4i/service=ftp/socktype=SOCK_STREAM' );
     if( @res ) {
-	# Diagnostic that might help
-	while( my $r = shift @res ) {
-	    diag( "family=$r->{family} socktype=$r->{socktype} protocol=$r->{protocol} addr=[" . length( $r->{addr} ) . " bytes]" );
-	    diag( "  addr=" . join( ", ", map { sprintf '0x%02x', ord $_ } split m//, $r->{addr} ) );
-	}
+        # Diagnostic that might help
+        while( my $r = shift @res ) {
+            diag( "family=$r->{family} socktype=$r->{socktype} protocol=$r->{protocol} addr=[" . length( $r->{addr} ) . " bytes]" );
+            diag( "  addr=" . join( ", ", map { sprintf '0x%02x', ord $_ } split m//, $r->{addr} ) );
+        }
     }
 }
 
@@ -112,11 +112,11 @@ AI_NUMERICHOST: {
     # for enabled services but that's kind of yuck, too.
     my @port = (80, 7, 22, 25, 88, 123, 110, 389, 443, 445, 873, 2049, 3306);
     foreach my $port ( @port ) {
-	( $err, @res ) = getaddrinfo( "127.0.0.1", $port, { flags => AI_NUMERICHOST, socktype => SOCK_STREAM } );
-	if( $err == 0 ) {
-	    ok( $err == 0, "\$err == 0 for 127.0.0.1/$port/flags=AI_NUMERICHOST" );
-	    last AI_NUMERICHOST;
-	}
+        ( $err, @res ) = getaddrinfo( "127.0.0.1", $port, { flags => AI_NUMERICHOST, socktype => SOCK_STREAM } );
+        if( $err == 0 ) {
+            ok( $err == 0, "\$err == 0 for 127.0.0.1/$port/flags=AI_NUMERICHOST" );
+            last AI_NUMERICHOST;
+        }
     }
     fail( "$err for 127.0.0.1/$port[-1]/flags=AI_NUMERICHOST (failed for ports @port)" );
 }
diff --git a/cpan/Socket/t/sockaddr.t b/cpan/Socket/t/sockaddr.t
index 1ae24a0bba..7492eb3dc1 100644
--- a/cpan/Socket/t/sockaddr.t
+++ b/cpan/Socket/t/sockaddr.t
@@ -7,10 +7,11 @@ use Socket qw(
     AF_INET
     inet_ntoa inet_aton inet_ntop inet_pton
     pack_sockaddr_in unpack_sockaddr_in sockaddr_in
+    pack_sockaddr_un unpack_sockaddr_un
     sockaddr_family
     sockaddr_un
 );
-use Test::More tests => 33;
+use Test::More tests => 46;
 
 # inet_aton, inet_ntoa
 {
@@ -80,6 +81,18 @@ SKIP: {
 
     is(sockaddr_family(scalar sockaddr_in(200,v10.30.50.70)), AF_INET,
         'sockaddr_in in scalar context packs');
+
+    my $warnings = 0;
+    local $SIG{__WARN__} = sub { $warnings++ };
+    ok( !eval { pack_sockaddr_in 0, undef; 1 },
+        'pack_sockaddr_in undef addr is fatal' );
+    ok( !eval { unpack_sockaddr_in undef; 1 },
+        'unpack_sockaddr_in undef is fatal' );
+
+    ok( eval { pack_sockaddr_in undef, "\0\0\0\0"; 1 },
+        'pack_sockaddr_in undef port is allowed' );
+
+    is( $warnings, 0, 'undefined values produced no warnings' );
 }
 
 # pack_sockaddr_in6, unpack_sockaddr_in6
@@ -104,12 +117,24 @@ SKIP: {
 
     is(sockaddr_family(scalar Socket::sockaddr_in6(0x1357, "02468ace13579bdf")), $AF_INET6,
         'sockaddr_in6 in scalar context packs' );
+
+    my $warnings = 0;
+    local $SIG{__WARN__} = sub { $warnings++ };
+    ok( !eval { Socket::pack_sockaddr_in6( 0, undef ); 1 },
+        'pack_sockaddr_in6 undef addr is fatal' );
+    ok( !eval { Socket::unpack_sockaddr_in6( undef ); 1 },
+        'unpack_sockaddr_in6 undef is fatal' );
+
+    ok( eval { Socket::pack_sockaddr_in6( undef, "\0"x16 ); 1 },
+        'pack_sockaddr_in6 undef port is allowed' );
+
+    is( $warnings, 0, 'undefined values produced no warnings' );
 }
 
-# sockaddr_un
+# sockaddr_un on abstract paths
 SKIP: {
     # see if we can handle abstract sockets
-    skip "Abstract AF_UNIX paths unsupported", 2 unless $^O eq "linux";
+    skip "Abstract AF_UNIX paths unsupported", 7 unless $^O eq "linux";
 
     my $test_abstract_socket = chr(0) . '/org/perl/hello'. chr(0) . 'world';
     my $addr = sockaddr_un ($test_abstract_socket);
@@ -118,6 +143,19 @@ SKIP: {
 
     # see if we calculate the address structure length correctly
     is(length ($test_abstract_socket) + 2, length $addr, 'sockaddr_un abstract address length');
+
+    my $warnings = 0;
+    local $SIG{__WARN__} = sub { $warnings++ };
+    ok( !eval { pack_sockaddr_un( undef ); 1 },
+        'pack_sockaddr_un undef path is fatal' );
+    ok( !eval { unpack_sockaddr_un( undef ); 1 },
+        'unpack_sockaddr_un undef is fatal' );
+
+    is( $warnings, 0, 'undefined values produced no warnings' );
+
+    ok( eval { pack_sockaddr_un( "x" x 0x10000 ); 1 },
+        'pack_sockaddr_un(very long path) succeeds' ) or diag( "Died: $@" );
+    is( $warnings, 1, 'pack_sockaddr_in(very long path) warns' );
 }
 
 # warnings