1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s 2 3 template<typename T> using U = T; 4 5 using I = U<U<U<U<int>>>>; 6 using I = int; 7 8 template<typename A, typename B> using Fst = A; 9 template<typename A, typename B> using Snd = B; 10 11 using I = Fst<Snd<char,int>,double>; 12 13 namespace StdExample { 14 // Prerequisites for example. 15 template<class T, class A> struct vector { /* ... */ }; 16 17 18 template<class T> struct Alloc {}; 19 template<class T> using Vec = vector<T, Alloc<T>>; 20 Vec<int> v; 21 22 template<class T> 23 void process(Vec<T>& v) // expected-note {{previous definition is here}} 24 { /* ... */ } 25 26 template<class T> 27 void process(vector<T, Alloc<T>>& w) // expected-error {{redefinition of 'process'}} 28 { /* ... */ } 29 30 template<template<class> class TT> 31 void f(TT<int>); // expected-note {{candidate template ignored}} 32 33 template<template<class,class> class TT> 34 void g(TT<int, Alloc<int>>); 35 36 int h() { 37 f(v); // expected-error {{no matching function for call to 'f'}} 38 g(v); // OK: TT = vector 39 } 40 41 42 // v's type is same as vector<int, Alloc<int>>. 43 using VTest = vector<int, Alloc<int>>; 44 using VTest = decltype(v); 45 } 46
