<?xml version="1.0"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" 
              "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
  <title>TestCase for empty feMerge component</title>
  <defs>
    <filter id="MyFilter" filterUnits="userSpaceOnUse" x="0" y="0" width="100" height="100">
      <feMerge>
        <feMergeNode/>
      </feMerge>
    </filter>
  </defs>
  <rect x="1" y="1" width="100" height="100" fill="#888888" stroke="blue" />
  <g filter="url(#MyFilter)" >
    <rect fill="green" stroke="blue" x="0" y="0" width="100" height="100"/>
  </g>
</svg>