1--TEST--
2Regression test for incorrect update of pi node users when removing a predecessor block
3--FILE--
4<?php
5
6function test() {
7    for (; $n--; )
8        C;
9}
10test();
11
12?>
13--EXPECTF--
14Warning: Undefined variable $n in %s on line %d
15
16Warning: Decrement on type null has no effect, this will change in the next major version of PHP in %s on line %d
17