1--TEST--
2call_user_func() in combination with "Call to a member function method() on a non-object"
3--FILE--
4<?php
5$comparator = null;
6try {
7    var_dump(call_user_func([$comparator, 'compare'], 1, 2));
8} catch (TypeError $e) {
9    echo $e->getMessage(), "\n";
10}
11?>
12--EXPECT--
13call_user_func(): Argument #1 ($callback) must be a valid callback, first array member is not a valid class name or object
14