5594 static void checkDLLAttributeRedeclaration(Sema &S, NamedDecl *OldDecl,  in checkDLLAttributeRedeclaration()  argument
5598   if (TemplateDecl *OldTD = dyn_cast<TemplateDecl>(OldDecl)) {  in checkDLLAttributeRedeclaration()
5599     OldDecl = OldTD->getTemplatedDecl();  in checkDLLAttributeRedeclaration()
5606   if (!OldDecl || !NewDecl)  in checkDLLAttributeRedeclaration()
5609   const DLLImportAttr *OldImportAttr = OldDecl->getAttr<DLLImportAttr>();  in checkDLLAttributeRedeclaration()
5610   const DLLExportAttr *OldExportAttr = OldDecl->getAttr<DLLExportAttr>();  in checkDLLAttributeRedeclaration()
5625   if (AddsAttr && !IsSpecialization && !OldDecl->isImplicit()) {  in checkDLLAttributeRedeclaration()
5628     if (!OldDecl->isCXXClassMember()) {  in checkDLLAttributeRedeclaration()
5629       auto *VD = dyn_cast<VarDecl>(OldDecl);  in checkDLLAttributeRedeclaration()
5632       auto *FD = dyn_cast<FunctionDecl>(OldDecl);  in checkDLLAttributeRedeclaration()
5640     if (OldDecl->isUsed())  in checkDLLAttributeRedeclaration()
5641       if (!isa<FunctionDecl>(OldDecl) || !NewImportAttr)  in checkDLLAttributeRedeclaration()
5649     S.Diag(OldDecl->getLocation(), diag::note_previous_declaration);  in checkDLLAttributeRedeclaration()
5680       S.Diag(OldDecl->getLocation(), diag::note_previous_declaration);  in checkDLLAttributeRedeclaration()
5689       S.Diag(OldDecl->getLocation(), diag::note_previous_declaration);  in checkDLLAttributeRedeclaration()
5691       OldDecl->dropAttr<DLLImportAttr>();  in checkDLLAttributeRedeclaration()
5696     OldDecl->dropAttr<DLLImportAttr>();  in checkDLLAttributeRedeclaration()
8647   NamedDecl *OldDecl = nullptr;  in CheckFunctionDeclaration()  local
8660         OldDecl = Candidate;  in CheckFunctionDeclaration()
8663       switch (CheckOverload(S, NewFD, Previous, OldDecl,  in CheckFunctionDeclaration()
8685           OverloadedDecl = OldDecl;  in CheckFunctionDeclaration()
8703       OldDecl = Previous.getFoundDecl();  in CheckFunctionDeclaration()
8707       if (OldDecl->hasAttr<OverloadableAttr>()) {  in CheckFunctionDeclaration()
8715         if (IsOverload(NewFD, cast<FunctionDecl>(OldDecl), false)) {  in CheckFunctionDeclaration()
8717           OldDecl = nullptr;  in CheckFunctionDeclaration()
8737     if (OldDecl)  in CheckFunctionDeclaration()
8738       OldMD = dyn_cast_or_null<CXXMethodDecl>(OldDecl->getAsFunction());  in CheckFunctionDeclaration()
8764     if (MergeFunctionDecl(NewFD, OldDecl, S, MergeTypeWithPrevious)) {  in CheckFunctionDeclaration()
8770     Previous.addDecl(OldDecl);  in CheckFunctionDeclaration()
8773                                   = dyn_cast<FunctionTemplateDecl>(OldDecl)) {  in CheckFunctionDeclaration()
8802       NewFD->setPreviousDeclaration(cast<FunctionDecl>(OldDecl));  in CheckFunctionDeclaration()
8805         NewFD->setAccess(OldDecl->getAccess());  in CheckFunctionDeclaration()