1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 2*67e74705SXin Li 3*67e74705SXin Li template<typename T> using A = int; // expected-note 2{{previous}} 4*67e74705SXin Li template<typename T> using A = char; // expected-error {{type alias template redefinition with different types ('char' vs 'int')}} 5*67e74705SXin Li template<typename T1, typename T2> using A = T1; // expected-error {{too many template parameters in template redeclaration}} 6*67e74705SXin Li 7*67e74705SXin Li template<typename T1, typename T2> using B = T1; // expected-note {{previous}} 8*67e74705SXin Li template<typename T2, typename T1> using B = T1; // expected-error {{type alias template redefinition with different types}} 9*67e74705SXin Li 10*67e74705SXin Li 11*67e74705SXin Li template<typename> struct S; 12*67e74705SXin Li template<template<typename> class F> using FInt = F<int>; 13*67e74705SXin Li template<typename X> using SXRInt = FInt<S<X>::template R>; 14*67e74705SXin Li template<typename X> using SXRInt = typename S<X>::template R<int>; // ok, redeclaration. 15*67e74705SXin Li 16*67e74705SXin Li template<template<typename> class> struct TT; 17*67e74705SXin Li 18*67e74705SXin Li namespace FilterLookup { 19*67e74705SXin Li TT<A> f(); // expected-note {{previous declaration is here}} 20*67e74705SXin Li 21*67e74705SXin Li template<typename> using A = int; 22*67e74705SXin Li TT<A> f(); // expected-error {{functions that differ only in their return type cannot be overloaded}} 23*67e74705SXin Li } 24