1--TEST-- 2Bug #77381 (heap buffer overflow in multibyte match_at) 3--SKIPIF-- 4<?php extension_loaded('mbstring') or die('skip mbstring not available'); ?> 5--FILE-- 6<?php 7var_dump(mb_ereg("000||0\xfa","0")); 8var_dump(mb_ereg("(?i)000000000000000000000\xf0","")); 9var_dump(mb_ereg("0000\\"."\xf5","0")); 10var_dump(mb_ereg("(?i)FFF00000000000000000\xfd","")); 11?> 12--EXPECTF-- 13Warning: mb_ereg(): Pattern is not valid under UTF-8 encoding in %s on line %d 14bool(false) 15 16Warning: mb_ereg(): Pattern is not valid under UTF-8 encoding in %s on line %d 17bool(false) 18 19Warning: mb_ereg(): Pattern is not valid under UTF-8 encoding in %s on line %d 20bool(false) 21 22Warning: mb_ereg(): Pattern is not valid under UTF-8 encoding in %s on line %d 23bool(false) 24