Workaround for bug #25955

Generalized a Darwin check in dns.c to a check for inet_pton() (kalowsky)

configure.in

@@ -189,6 +189,7 @@ case $host_alias in
     CPPFLAGS="$CPPFLAGS -D_BSD_TIMEOFDAY_FLAVOR";;
 *darwin*|*rhapsody*)
     CPPFLAGS="$CPPFLAGS -no-cpp-precomp"
+    AC_DEFINE(BIND_8_COMPAT, 1, [Enabling BIND8 compatibility for Panther])
     php_multiple_shlib_versions_ok=yes;;
 *beos*)
     beos_threads=1
@@ -480,6 +481,7 @@ gettimeofday \
 gmtime_r \
 inet_ntoa \
 inet_ntop \
+inet_pton \
 isascii \
 link \
 localtime_r \

ext/standard/dns.c

@@ -90,9 +90,7 @@ PHP_FUNCTION(gethostbyaddr)
 	addr = php_gethostbyaddr(Z_STRVAL_PP(arg));
 
 	if(addr == NULL) {
-#if HAVE_IPV6 && !defined(__MacOSX__)
-/* MacOSX at this time has support for IPv6, but not inet_pton()
- * so disabling IPv6 until further notice.  MacOSX 10.1.2 (kalowsky) */
+#if HAVE_IPV6 && HAVE_INET_PTON
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Address is not a valid IPv4 or IPv6 address");
 #else
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Address is not in a.b.c.d form");
@@ -107,17 +105,13 @@ PHP_FUNCTION(gethostbyaddr)
 /* {{{ php_gethostbyaddr */
 static char *php_gethostbyaddr(char *ip)
 {
-#if HAVE_IPV6 && !defined(__MacOSX__)
-/* MacOSX at this time has support for IPv6, but not inet_pton()
- * so disabling IPv6 until further notice.  MacOSX 10.1.2 (kalowsky) */
+#if HAVE_IPV6 && HAVE_INET_PTON
 	struct in6_addr addr6;
 #endif
 	struct in_addr addr;
 	struct hostent *hp;
 
-#if HAVE_IPV6 && !defined(__MacOSX__)
-/* MacOSX at this time has support for IPv6, but not inet_pton()
- * so disabling IPv6 until further notice.  MacOSX 10.1.2 (kalowsky) */
+#if HAVE_IPV6 && HAVE_INET_PTON
 	if (inet_pton(AF_INET6, ip, &addr6)) {
 		hp = gethostbyaddr((char *) &addr6, sizeof(addr6), AF_INET6);
 	} else if (inet_pton(AF_INET, ip, &addr)) {