1252     const upb_def *subdef;  in upb_validate_field()  local
1260     subdef = upb_fielddef_subdef(f);  in upb_validate_field()
1261     if (subdef == NULL) {  in upb_validate_field()
1267     if (!upb_def_isfrozen(subdef) && !subdef->came_from_user) {  in upb_validate_field()
1314     const upb_msgdef *subdef = upb_fielddef_msgsubdef(f);  in upb_validate_field()  local
1315     if (upb_msgdef_mapentry(subdef) && !upb_fielddef_isseq(f)) {  in upb_validate_field()
2356 static bool upb_subdef_typecheck(upb_fielddef *f, const upb_def *subdef,  in upb_subdef_typecheck()  argument
2359     if (upb_dyncast_msgdef(subdef)) return true;  in upb_subdef_typecheck()
2363     if (upb_dyncast_enumdef(subdef)) return true;  in upb_subdef_typecheck()
2380 bool upb_fielddef_setsubdef(upb_fielddef *f, const upb_def *subdef,  in upb_fielddef_setsubdef()  argument
2384   if (subdef && !upb_subdef_typecheck(f, subdef, s)) return false;  in upb_fielddef_setsubdef()
2386   f->sub.def = subdef;  in upb_fielddef_setsubdef()
2392 bool upb_fielddef_setmsgsubdef(upb_fielddef *f, const upb_msgdef *subdef,  in upb_fielddef_setmsgsubdef()  argument
2394   return upb_fielddef_setsubdef(f, upb_msgdef_upcast(subdef), s);  in upb_fielddef_setmsgsubdef()
2397 bool upb_fielddef_setenumsubdef(upb_fielddef *f, const upb_enumdef *subdef,  in upb_fielddef_setenumsubdef()  argument
2399   return upb_fielddef_setsubdef(f, upb_enumdef_upcast(subdef), s);  in upb_fielddef_setenumsubdef()
3374         upb_def *subdef = upb_resolvename(&addtab, base, name);  in symtab_add()  local
3375         if (subdef == NULL) {  in symtab_add()
3376           subdef = upb_resolvename(&s->symtab, base, name);  in symtab_add()
3378         if (subdef == NULL) {  in symtab_add()
3382         } else if (!upb_fielddef_setsubdef(f, subdef, status)) {  in symtab_add()
3990     const upb_msgdef *subdef;  in newformsg()  local
3995     subdef = upb_downcast_msgdef(upb_fielddef_subdef(f));  in newformsg()
3996     if (upb_inttable_lookupptr(&s->tab, subdef, &subm_ent)) {  in newformsg()
3999       upb_handlers *sub_mh = newformsg(subdef, &sub_mh, s);  in newformsg()