^<\?xml version="1.0"\?>
<GCC_XML[^>]*>
  <Typedef id="_1" name="start" type="_2" context="_3" location="f1:3" file="f1" line="3"/>
  <Unimplemented id="_2" type_class="Atomic"/>
  <Namespace id="_3" name="::"/>
  <File id="f1" name=".*/test/input/Atomic-struct.c"/>
</GCC_XML>$
