http://svn.php.net/viewvc?view=revision&revision=288945

Index: ext/standard/file.c
===================================================================
--- ext/standard/file.c	(revision 288706)
+++ ext/standard/file.c	(revision 288971)
@@ -838,6 +838,10 @@
 	convert_to_string_ex(arg1);
 	convert_to_string_ex(arg2);
 
+	if (PG(safe_mode) &&(!php_checkuid(Z_STRVAL_PP(arg1), NULL, CHECKUID_ALLOW_ONLY_DIR))) {
+		RETURN_FALSE;
+	}
+
 	if (php_check_open_basedir(Z_STRVAL_PP(arg1) TSRMLS_CC)) {
 		RETURN_FALSE;
 	}