src/third_party/libxml/fuzz/seed_corpus/74e57dd82b745f81379d53fe84f0d89dd668bc3d - cobalt - Git at Google

 <!DOCTYPE foo [
 <!ELEMENT foo (root*)>
 <!ELEMENT root EMPTY>
 <!ENTITY utf16b SYSTEM "dtds/utf16b.ent">
 <!ENTITY utf16l SYSTEM "dtds/utf16l.ent">
 ]>

 <foo> &utf16b; &utf16l; </foo>
	<!DOCTYPE foo [
	<!ELEMENT foo (root*)>
	<!ELEMENT root EMPTY>
	<!ENTITY utf16b SYSTEM "dtds/utf16b.ent">
	<!ENTITY utf16l SYSTEM "dtds/utf16l.ent">
	]>

	<foo> &utf16b; &utf16l; </foo>