1 files changed, 20 insertions, 0 deletions
diff --git a/clang/test/CXX/temp/temp.decls/temp.variadic/multi-level-substitution.cpp b/clang/test/CXX/temp/temp.decls/temp.variadic/multi-level-substitution.cpp
index 649c9b8ef26..ff2134dc33c 100644
--- a/clang/test/CXX/temp/temp.decls/temp.variadic/multi-level-substitution.cpp
+++ b/clang/test/CXX/temp/temp.decls/temp.variadic/multi-level-substitution.cpp
@@ -11,3 +11,23 @@ struct X0 {
 void test_X0() {
   X0<int>().f<1, 2, 3, 4, 5>();
 }
+
+namespace PacksAtDifferentLevels {
+  template<typename...> struct tuple { };
+  template<typename T, typename U> struct pair { };
+
+  template<typename ...Types>
+  struct X {
+    template<typename> struct Inner;
+
+    template<typename ...YTypes>
+    struct Inner<tuple<pair<Types, YTypes>...> > {
+      static const unsigned zero = sizeof...(Types) - sizeof...(YTypes);
+    };
+  };
+
+  int check0[X<short, int, long>::Inner<tuple<pair<short, unsigned short>,
+                                             pair<int, unsigned int>,
+                                             pair<long, unsigned long>>
+                                       >::zero == 0? 1 : -1];
+}