880     if ((doc != NULL) && (doc->extSubset != NULL)) {  in xmlNewDtd()
885 	    /* !!! */ (char *)doc->extSubset->name);  in xmlNewDtd()
908 	doc->extSubset = cur;  in xmlNewDtd()
1210     xmlDtdPtr extSubset, intSubset;  in xmlFreeDoc()  local
1238     extSubset = cur->extSubset;  in xmlFreeDoc()
1240     if (intSubset == extSubset)  in xmlFreeDoc()
1241 	extSubset = NULL;  in xmlFreeDoc()
1242     if (extSubset != NULL) {  in xmlFreeDoc()
1243 	xmlUnlinkNode((xmlNodePtr) cur->extSubset);  in xmlFreeDoc()
1244 	cur->extSubset = NULL;  in xmlFreeDoc()
1245 	xmlFreeDtd(extSubset);  in xmlFreeDoc()
3826 	    if (doc->extSubset == (xmlDtdPtr) cur)  in xmlUnlinkNode()
3827 		doc->extSubset = NULL;  in xmlUnlinkNode()
3842 	    if (doc->extSubset != NULL) {  in xmlUnlinkNode()
3843 	        if (xmlHashLookup(doc->extSubset->entities, cur->name) == cur)  in xmlUnlinkNode()
3844 		    xmlHashRemoveEntry(doc->extSubset->entities, cur->name,  in xmlUnlinkNode()
3846 	        if (xmlHashLookup(doc->extSubset->pentities, cur->name) == cur)  in xmlUnlinkNode()
3847 		    xmlHashRemoveEntry(doc->extSubset->pentities, cur->name,  in xmlUnlinkNode()
6547 	    if ((attrDecl == NULL) && (doc->extSubset != NULL)) {  in xmlGetPropNodeInternal()
6548 		attrDecl = xmlGetDtdQAttrDesc(doc->extSubset,  in xmlGetPropNodeInternal()
6571 		    if (doc->extSubset != NULL) {  in xmlGetPropNodeInternal()
6572 			attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, elemQName,  in xmlGetPropNodeInternal()
6668 	    if ((attrDecl == NULL) && (doc->extSubset != NULL))  in xmlHasProp()
6669 		attrDecl = xmlGetDtdAttrDesc(doc->extSubset, node->name, name);  in xmlHasProp()
9242 		if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapAdoptBranch()
9639 		    if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapCloneNode()
9967 		if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapAdoptAttr()
10105 		if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapAdoptNode()