<svg xmlns="http://www.w3.org/2000/svg">

<text>
    <tspan>
        <text>This should not appear in rendering.</text>
        <textPath>This should not appear in rendering.</textPath>
    </tspan>
    <tref>
        <text>This should not appear in rendering.</text>
        <tspan>This should not appear in rendering.</tspan>
        <tref>This should not appear in rendering.</tref>
        <textPath>This should not appear in rendering.</textPath>
        <altGlyph>This should not appear in rendering.</altGlyph>
    </tref>
    <textPath>
        <text>This should not appear in rendering.</text>
        <textPath>This should not appear in rendering.</textPath>
        <altGlyph>This should not appear in rendering.</altGlyph>
    </textPath>
</text>
<tspan>
    <text>This should not appear in rendering.</text>
    <textPath>This should not appear in rendering.</textPath>
</tspan>
<tref>
    <text>This should not appear in rendering.</text>
    <tspan>This should not appear in rendering.</tspan>
    <tref>This should not appear in rendering.</tref>
    <textPath>This should not appear in rendering.</textPath>
    <altGlyph>This should not appear in rendering.</altGlyph>
</tref>
<textPath>
    <text>This should not appear in rendering.</text>
    <textPath>This should not appear in rendering.</textPath>
    <altGlyph>This should not appear in rendering.</altGlyph>
</textPath>

<!-- This should not crash. -->
<rect width="100" height="100" fill="green"/>

</svg>