1--TEST-- 2GH-16320 mb_substr overflow from negative length 3--EXTENSIONS-- 4mbstring 5--FILE-- 6<?php 7try { 8 mb_substr("abcd", PHP_INT_MIN, 4, "UTF-8"); 9} catch (\ValueError $e) { 10 echo $e->getMessage() . PHP_EOL; 11} 12try { 13 mb_substr("abcd", 0, PHP_INT_MIN, "UTF-8"); 14} catch (\ValueError $e) { 15 echo $e->getMessage() . PHP_EOL; 16} 17var_dump(mb_substr("abcd", PHP_INT_MAX, PHP_INT_MAX, "UTF-8")); 18?> 19--EXPECTF-- 20mb_substr(): Argument #2 ($start) must be between %s and %s 21mb_substr(): Argument #3 ($length) must be between %s and %s 22string(0) "" 23 24
