1--TEST-- 2Bug #70895 null ptr deref and segfault with crafted callable 3--FILE-- 4<?php 5 function m($f,$a){ 6 return array_map($f,0); 7 } 8 9 echo implode(m("",m("",m("",m("",m("0000000000000000000000000000000000",(""))))))); 10?> 11--EXPECTF-- 12Warning: array_map() expects parameter 1 to be a valid callback, function '0000000000000000000000000000000000' not found or invalid function name in %sbug70898.php on line %d 13 14Warning: array_map() expects parameter 1 to be a valid callback, function '' not found or invalid function name in %sbug70898.php on line %d 15 16Warning: array_map() expects parameter 1 to be a valid callback, function '' not found or invalid function name in %sbug70898.php on line %d 17 18Warning: array_map() expects parameter 1 to be a valid callback, function '' not found or invalid function name in %sbug70898.php on line %d 19 20Warning: array_map() expects parameter 1 to be a valid callback, function '' not found or invalid function name in %sbug70898.php on line %d 21 22Warning: implode(): Argument must be an array in %sbug70898.php on line %d 23