--TEST--
Bug #77371 (Heap overflow in utf32be_mbc_to_code)
--SKIPIF--
<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?>
--FILE--
<?php
mb_regex_encoding("UTF-32");
var_dump(mb_split("\x00\x00\x00\x5c\x00\x00\x00B","000000000000000000000000000000"));
?>
--EXPECT--
array(1) {
  [0]=>
  string(30) "000000000000000000000000000000"
}