diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -1440,10 +1440,12 @@
   clang::TemplateParameterList *template_param_list =
       CreateTemplateParameterList(getASTContext(), template_param_infos,
                                   ignore);
-  llvm::SmallVector<clang::TemplateArgument, 2> args =
-      template_param_infos.args;
+  llvm::SmallVector<clang::TemplateArgument, 2> args(
+      template_param_infos.GetArgs());
   if (template_param_infos.hasParameterPack()) {
-    args.append(template_param_infos.packed_args->args);
+    llvm::ArrayRef<TemplateArgument> pack_args =
+        template_param_infos.GetParameterPackArgs();
+    args.append(pack_args.begin(), pack_args.end());
   }
   std::string str;
   llvm::raw_string_ostream os(str);