PerlXML-Parser has self-testing. One subtest of one testt/partial.t is failing. It tries to parsesamples/REC-xml-19980210.xml and top level parsing seems to be OK.
Thetmpchar function is called as a callback. It detects the element via $xp->current_element, but when it tries to get its contents via $xp->original_string it gets back an empty string instead of "&draft.day;".
Tested on Debian/Sid with Expat 2.7.0 and fails. If I downgrade Expat to 2.6.4 then it works again. Tried to do more debugging, but stuck at the moment. All I know that its C parser is generated fromExpat/Expat.xs.
If you need to test anything, I can try it in advance.