1--TEST--
2GdImage instances must not be serialized
3--SKIPIF--
4<?php
5if(!extension_loaded('gd')) {
6    die('skip gd extension is not loaded');
7}
8?>
9--FILE--
10<?php
11
12    $img_src = imagecreatetruecolor(32, 32);
13    var_dump(serialize($img_src));
14
15?>
16--EXPECTF--
17Fatal error: Uncaught Exception: Serialization of 'GdImage' is not allowed in %s:%d
18Stack trace:
19#0 %s(%d): serialize(Object(GdImage))
20#1 {main}
21  thrown in %s on line %d
22