Implement C++1y decltype(auto).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@180610 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplateVariadic.cpp b/lib/Sema/SemaTemplateVariadic.cpp
index c0ad2be..db885ae 100644
--- a/lib/Sema/SemaTemplateVariadic.cpp
+++ b/lib/Sema/SemaTemplateVariadic.cpp
@@ -727,6 +727,7 @@
   case TST_interface:
   case TST_class:
   case TST_auto:
+  case TST_decltype_auto:
   case TST_unknown_anytype:
   case TST_image1d_t:
   case TST_image1d_array_t: