1 files changed, 23 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/redeclared-alias-template.cpp b/clang/test/SemaCXX/redeclared-alias-template.cpp
new file mode 100644
index 0000000..09e9d0d
--- /dev/null
+++ b/clang/test/SemaCXX/redeclared-alias-template.cpp
@@ -0,0 +1,23 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+
+template<typename T> using A = int; // expected-note 2{{previous}}
+template<typename T> using A = char; // expected-error {{type alias template redefinition with different types ('char' vs 'int')}}
+template<typename T1, typename T2> using A = T1; // expected-error {{too many template parameters in template redeclaration}}
+
+template<typename T1, typename T2> using B = T1; // expected-note {{previous}}
+template<typename T2, typename T1> using B = T1; // expected-error {{type alias template redefinition with different types}}
+
+
+template<typename> struct S;
+template<template<typename> class F> using FInt = F<int>;
+template<typename X> using SXRInt = FInt<S<X>::template R>;
+template<typename X> using SXRInt = typename S<X>::template R<int>; // ok, redeclaration.
+
+template<template<typename> class> struct TT;
+
+namespace FilterLookup {
+  TT<A> f(); // expected-note {{previous declaration is here}}
+
+  template<typename> using A = int;
+  TT<A> f(); // expected-error {{functions that differ only in their return type cannot be overloaded}}
+}