--TEST--
Check for empty pattern
--SKIPIF--
<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
--FILE--
<?php

mb_ereg_search_init("","","");
mb_split("","");
mb_ereg_search_regs();

?>
--EXPECTF--
Warning: mb_ereg_search_init(): Empty pattern in %s on line %d

Warning: mb_ereg_search_regs(): No regex given in %s on line %d