24 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s2 3template<typename T> using A = int; // expected-note 2{{previous}}4template<typename T> using A = char; // expected-error {{type alias template redefinition with different types ('char' vs 'int')}}5template<typename T1, typename T2> using A = T1; // expected-error {{too many template parameters in template redeclaration}}6 7template<typename T1, typename T2> using B = T1; // expected-note {{previous}}8template<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'))}}9 10 11template<typename> struct S;12template<template<typename> class F> using FInt = F<int>;13template<typename X> using SXRInt = FInt<S<X>::template R>;14template<typename X> using SXRInt = typename S<X>::template R<int>; // ok, redeclaration.15 16template<template<typename> class> struct TT;17 18namespace FilterLookup {19 TT<A> f(); // expected-note {{previous declaration is here}}20 21 template<typename> using A = int;22 TT<A> f(); // expected-error {{functions that differ only in their return type cannot be overloaded}}23}24