jaxp/test/javax/xml/jaxp/unittest/validation/tck/Bug6977201/reA3.xml

<?xml version="1.0"?>
<doc  xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
    xsi:noNamespaceSchemaLocation='reA3.xsd' >

<!-- 
base='string', pattern='', value='#x20;', type='invalid', RULE='1'
-->

      <elem att='#x20;'/>

 </doc>