chromium/third_party/blink/web_tests/svg/hixie/error/012.xml

<svg xmlns="http://www.w3.org/2000/svg">
 <!-- This page is ill-formed and should generate an XML parsing error. -->
 <rect x="10" y="10" width="200" height="200" fill="red"/>
 <rect x="10" y="10" width="200" height="200" fill="red">
</svg>