| <svg xmlns="http://www.w3.org/2000/svg"> | |
| <filter id="f1"> | |
| <feConvolveMatrix order="3" kernelUnitLength="-5.0" kernelMatrix="0 1 0 1 1 1 0 1 0"/> | |
| </filter> | |
| <text x="20" y="20">Test PASSES if it does not crash and has no red rectangle.</text> | |
| <g filter="url(#f1)"> | |
| <rect x="0" y="0" width="50" height="50" fill="red" /> | |
| </g> | |
| </svg> |
