/usr/include/xsd/cxx/xml/ is in xsdcxx 4.0.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/xsd/cxx/xml/bits/
/usr/include/xsd/cxx/xml/bits/literals.hxx
/usr/include/xsd/cxx/xml/bits/literals.ixx
/usr/include/xsd/cxx/xml/char-iso8859-1.hxx
/usr/include/xsd/cxx/xml/char-iso8859-1.txx
/usr/include/xsd/cxx/xml/char-lcp.hxx
/usr/include/xsd/cxx/xml/char-lcp.txx
/usr/include/xsd/cxx/xml/char-utf8.hxx
/usr/include/xsd/cxx/xml/char-utf8.txx
/usr/include/xsd/cxx/xml/dom/
/usr/include/xsd/cxx/xml/dom/auto-ptr.hxx
/usr/include/xsd/cxx/xml/dom/bits/
/usr/include/xsd/cxx/xml/dom/bits/error-handler-proxy.hxx
/usr/include/xsd/cxx/xml/dom/bits/error-handler-proxy.txx
/usr/include/xsd/cxx/xml/dom/elements.hxx
/usr/include/xsd/cxx/xml/dom/elements.txx
/usr/include/xsd/cxx/xml/dom/parsing-header.hxx
/usr/include/xsd/cxx/xml/dom/parsing-source.hxx
/usr/include/xsd/cxx/xml/dom/parsing-source.txx
/usr/include/xsd/cxx/xml/dom/serialization-header.hxx
/usr/include/xsd/cxx/xml/dom/serialization-header.txx
/usr/include/xsd/cxx/xml/dom/serialization-source.hxx
/usr/include/xsd/cxx/xml/dom/serialization-source.txx
/usr/include/xsd/cxx/xml/dom/wildcard-source.hxx
/usr/include/xsd/cxx/xml/dom/wildcard-source.txx
/usr/include/xsd/cxx/xml/elements.hxx
/usr/include/xsd/cxx/xml/elements.txx
/usr/include/xsd/cxx/xml/error-handler.hxx
/usr/include/xsd/cxx/xml/exceptions.hxx
/usr/include/xsd/cxx/xml/qualified-name.hxx
/usr/include/xsd/cxx/xml/sax/
/usr/include/xsd/cxx/xml/sax/bits/
/usr/include/xsd/cxx/xml/sax/bits/error-handler-proxy.hxx
/usr/include/xsd/cxx/xml/sax/bits/error-handler-proxy.txx
/usr/include/xsd/cxx/xml/sax/std-input-source.hxx
/usr/include/xsd/cxx/xml/std-memory-manager.hxx
/usr/include/xsd/cxx/xml/string.hxx
/usr/include/xsd/cxx/xml/string.ixx
/usr/include/xsd/cxx/xml/string.txx