1--TEST-- 2Bug #64578 (debug_backtrace in set_error_handler corrupts zend heap: segfault) 3--FILE-- 4<?php 5 6set_error_handler(function($no, $err) { var_dump($err); }); 7 8function x($s) { $s['a'] = 1; }; 9$y = '1'; 10x($y); 11print_r($y); 12--EXPECTF-- 13string(25) "Illegal string offset 'a'" 141 15