1066 static bool isParameterPack(Expr *PackExpression) {  in isParameterPack()  argument
1067   if (auto *D = dyn_cast<DeclRefExpr>(PackExpression); D) {  in isParameterPack()
1074 ExprResult Sema::ActOnPackIndexingExpr(Scope *S, Expr *PackExpression,  in ActOnPackIndexingExpr()  argument
1079   bool isParameterPack = ::isParameterPack(PackExpression);  in ActOnPackIndexingExpr()
1081     if (!PackExpression->containsErrors()) {  in ActOnPackIndexingExpr()
1083       Diag(PackExpression->getBeginLoc(), diag::err_expected_name_of_pack)  in ActOnPackIndexingExpr()
1084           << PackExpression;  in ActOnPackIndexingExpr()
1089       BuildPackIndexingExpr(PackExpression, EllipsisLoc, IndexExpr, RSquareLoc);  in ActOnPackIndexingExpr()
1098 Sema::BuildPackIndexingExpr(Expr *PackExpression, SourceLocation EllipsisLoc,  in BuildPackIndexingExpr()  argument
1116       Diag(PackExpression->getBeginLoc(), diag::err_pack_index_out_of_bound)  in BuildPackIndexingExpr()
1117           << *Index << PackExpression << ExpandedExprs.size();  in BuildPackIndexingExpr()
1123                                   PackExpression, IndexExpr, Index,  in BuildPackIndexingExpr()