XML_SCHEMAS_ELEM_CIRCULAR 19532 third_party/libxml/src/xmlschemas.c if (WXS_SUBST_HEAD(ancestor)->flags & XML_SCHEMAS_ELEM_CIRCULAR) XML_SCHEMAS_ELEM_CIRCULAR 19534 third_party/libxml/src/xmlschemas.c WXS_SUBST_HEAD(ancestor)->flags |= XML_SCHEMAS_ELEM_CIRCULAR; XML_SCHEMAS_ELEM_CIRCULAR 19537 third_party/libxml/src/xmlschemas.c WXS_SUBST_HEAD(ancestor)->flags ^= XML_SCHEMAS_ELEM_CIRCULAR;