diff -urN php-5.0.5/ext/posix/posix.c php-5.0.5.new/ext/posix/posix.c
--- php-5.0.5/ext/posix/posix.c	2005-06-07 00:06:00.000000000 +0200
+++ php-5.0.5.new/ext/posix/posix.c	2007-03-03 12:14:41.000000000 +0100
@@ -438,7 +438,7 @@
 	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
 }
 /* }}} */