Index: php-5.2.3/ext/posix/posix.c
===================================================================
--- php-5.2.3.orig/ext/posix/posix.c	2007-07-30 10:52:16.000000000 -0500
+++ php-5.2.3/ext/posix/posix.c	2007-07-30 10:52:17.000000000 -0500
@@ -468,7 +468,7 @@
 	add_assoc_string(return_value, "version",  u.version,  1);
 	add_assoc_string(return_value, "machine",  u.machine,  1);
 #ifdef _GNU_SOURCE
-	add_assoc_string(return_value, "domainname", u.domainname, 1);
+	add_assoc_string(return_value, "domainname", u.__domainname, 1);
 #endif
 }
 /* }}} */