874     if ((doc != NULL) && (doc->extSubset != NULL)) {  in xmlNewDtd()
879 	    /* !!! */ (char *)doc->extSubset->name);  in xmlNewDtd()
902 	doc->extSubset = cur;  in xmlNewDtd()
1204     xmlDtdPtr extSubset, intSubset;  in xmlFreeDoc()  local
1232     extSubset = cur->extSubset;  in xmlFreeDoc()
1234     if (intSubset == extSubset)  in xmlFreeDoc()
1235 	extSubset = NULL;  in xmlFreeDoc()
1236     if (extSubset != NULL) {  in xmlFreeDoc()
1237 	xmlUnlinkNode((xmlNodePtr) cur->extSubset);  in xmlFreeDoc()
1238 	cur->extSubset = NULL;  in xmlFreeDoc()
1239 	xmlFreeDtd(extSubset);  in xmlFreeDoc()
3815 	    if (doc->extSubset == (xmlDtdPtr) cur)  in xmlUnlinkNode()
3816 		doc->extSubset = NULL;  in xmlUnlinkNode()
3831 	    if (doc->extSubset != NULL) {  in xmlUnlinkNode()
3832 	        if (xmlHashLookup(doc->extSubset->entities, cur->name) == cur)  in xmlUnlinkNode()
3833 		    xmlHashRemoveEntry(doc->extSubset->entities, cur->name,  in xmlUnlinkNode()
3835 	        if (xmlHashLookup(doc->extSubset->pentities, cur->name) == cur)  in xmlUnlinkNode()
3836 		    xmlHashRemoveEntry(doc->extSubset->pentities, cur->name,  in xmlUnlinkNode()
6536 	    if ((attrDecl == NULL) && (doc->extSubset != NULL)) {  in xmlGetPropNodeInternal()
6537 		attrDecl = xmlGetDtdQAttrDesc(doc->extSubset,  in xmlGetPropNodeInternal()
6560 		    if (doc->extSubset != NULL) {  in xmlGetPropNodeInternal()
6561 			attrDecl = xmlGetDtdQAttrDesc(doc->extSubset, elemQName,  in xmlGetPropNodeInternal()
6657 	    if ((attrDecl == NULL) && (doc->extSubset != NULL))  in xmlHasProp()
6658 		attrDecl = xmlGetDtdAttrDesc(doc->extSubset, node->name, name);  in xmlHasProp()
9231 		if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapAdoptBranch()
9628 		    if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapCloneNode()
9956 		if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapAdoptAttr()
10094 		if ((destDoc->intSubset) || (destDoc->extSubset)) {  in xmlDOMWrapAdoptNode()