1 files changed, 2 insertions, 1 deletions
diff --git a/lib/AST/DeclTemplate.cpp b/lib/AST/DeclTemplate.cpp
index bd91facd08..e7902e996a 100644
--- a/lib/AST/DeclTemplate.cpp
+++ b/lib/AST/DeclTemplate.cpp
@@ -332,7 +332,8 @@ ClassTemplateDecl::getInjectedClassNameSpecialization() {
 
       if (NTTP->isParameterPack())
         E = new (Context) PackExpansionExpr(Context.DependentTy, E,
-                                            NTTP->getLocation());
+                                            NTTP->getLocation(),
+                                            llvm::Optional<unsigned>());
       Arg = TemplateArgument(E);
     } else {
       TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*Param);