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// 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 ('T1' (aka 'type-parameter-0-1') vs 'T1' (aka 'type-parameter-0-0'))}}
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}}
}
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