<!--shouldn't crash-->
<svg xmlns="http://www.w3.org/2000/svg"
    xmlns:xlink="http://www.w3.org/1999/xlink">
<defs>
<filter id="filter">
    <feFlood flood-color="green"/>
</filter>
</defs>
<g filter="url(#filter)">
    <rect width="100" height="100" filter="url(#filter)"/>
</g>
</svg>