1--TEST--
2call_user_func() in combination with "Call to a member function method() on a non-object"
3--FILE--
4<?php
5$comparator= null;
6var_dump(call_user_func([$comparator, 'compare'], 1, 2));
7echo "Alive\n";
8?>
9--EXPECTF--
10Warning: call_user_func() expects parameter 1 to be a valid callback, first array member is not a valid class name or object in %s on line %d
11NULL
12Alive
13