| <svg xmlns="http://www.w3.org/2000/svg"> | |
| <defs> | |
| <!-- check that WebKit doesn't crash, if an effect is not available in feMerge --> | |
| <filter id="filter" primitiveUnits="objectBoundingBox"> | |
| <feMerge> | |
| <feMergeNode in="does-not-exist"/> | |
| </feMerge> | |
| </filter> | |
| </defs> | |
| <g filter="url(#filter)"/> | |
| <rect x="0" y="0" width="100" height="100" fill="green"/> | |
| </svg> |
