/usr/include/xsd/cxx/parser/ is in xsdcxx 4.0.0-6.
This file is owned by root:root, with mode 0o755.
..
/usr/include/xsd/cxx/parser/document.hxx
/usr/include/xsd/cxx/parser/document.txx
/usr/include/xsd/cxx/parser/elements.hxx
/usr/include/xsd/cxx/parser/elements.txx
/usr/include/xsd/cxx/parser/error-handler.hxx
/usr/include/xsd/cxx/parser/error-handler.txx
/usr/include/xsd/cxx/parser/exceptions.hxx
/usr/include/xsd/cxx/parser/exceptions.ixx
/usr/include/xsd/cxx/parser/exceptions.txx
/usr/include/xsd/cxx/parser/expat/
/usr/include/xsd/cxx/parser/expat/elements.hxx
/usr/include/xsd/cxx/parser/expat/elements.txx
/usr/include/xsd/cxx/parser/map.hxx
/usr/include/xsd/cxx/parser/map.ixx
/usr/include/xsd/cxx/parser/map.txx
/usr/include/xsd/cxx/parser/non-validating/
/usr/include/xsd/cxx/parser/non-validating/parser.hxx
/usr/include/xsd/cxx/parser/non-validating/parser.txx
/usr/include/xsd/cxx/parser/non-validating/xml-schema-pimpl.hxx
/usr/include/xsd/cxx/parser/non-validating/xml-schema-pimpl.ixx
/usr/include/xsd/cxx/parser/non-validating/xml-schema-pimpl.txx
/usr/include/xsd/cxx/parser/non-validating/xml-schema-pskel.hxx
/usr/include/xsd/cxx/parser/non-validating/xml-schema-pskel.ixx
/usr/include/xsd/cxx/parser/non-validating/xml-schema-pskel.txx
/usr/include/xsd/cxx/parser/schema-exceptions.hxx
/usr/include/xsd/cxx/parser/schema-exceptions.ixx
/usr/include/xsd/cxx/parser/schema-exceptions.txx
/usr/include/xsd/cxx/parser/substitution-map.hxx
/usr/include/xsd/cxx/parser/substitution-map.txx
/usr/include/xsd/cxx/parser/validating/
/usr/include/xsd/cxx/parser/validating/exceptions.hxx
/usr/include/xsd/cxx/parser/validating/exceptions.ixx
/usr/include/xsd/cxx/parser/validating/exceptions.txx
/usr/include/xsd/cxx/parser/validating/inheritance-map.hxx
/usr/include/xsd/cxx/parser/validating/inheritance-map.txx
/usr/include/xsd/cxx/parser/validating/parser.hxx
/usr/include/xsd/cxx/parser/validating/parser.txx
/usr/include/xsd/cxx/parser/validating/xml-schema-pimpl.hxx
/usr/include/xsd/cxx/parser/validating/xml-schema-pimpl.ixx
/usr/include/xsd/cxx/parser/validating/xml-schema-pimpl.txx
/usr/include/xsd/cxx/parser/validating/xml-schema-pskel.hxx
/usr/include/xsd/cxx/parser/validating/xml-schema-pskel.ixx
/usr/include/xsd/cxx/parser/validating/xml-schema-pskel.txx
/usr/include/xsd/cxx/parser/xerces/
/usr/include/xsd/cxx/parser/xerces/elements.hxx
/usr/include/xsd/cxx/parser/xerces/elements.txx
/usr/include/xsd/cxx/parser/xml-schema.hxx
/usr/include/xsd/cxx/parser/xml-schema.ixx
/usr/include/xsd/cxx/parser/xml-schema.txx