^<\?xml version="1.0"\?>
<CastXML[^>]*>
  <Function id="_1" name="start" returns="_2" context="_3" location="f1:1" file="f1" line="1" mangled="">
    <Argument type="_2" location="f1:1" file="f1" line="1"/>
  </Function>
  <FundamentalType id="_2" name="_Float64x" size="128" align="128"/>
  <Namespace id="_3" name="::"/>
  <File id="f1" name=".*/test/input/GNU-_Float64x.cxx"/>
</CastXML>$
