1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
2 
3 void f();
4 
5 // Test typeof(expr) canonicalization
6 template<typename T, T N>
7 void f0(T x, decltype(f(N, x)) y) { } // expected-note{{previous}}
8 
9 template<typename T, T N>
10 void f0(T x, decltype((f)(N, x)) y) { }
11 
12 template<typename U, U M>
13 void f0(U u, decltype(f(M, u))) { } // expected-error{{redefinition}}
14 
15 // PR12438: Test sizeof...() canonicalization
16 template<int> struct N {};
17 
18 template<typename...T>
19 N<sizeof...(T)> f1() {} // expected-note{{previous}}
20 
21 template<typename, typename...T>
22 N<sizeof...(T)> f1() {}
23 
24 template<class...U>
25 N<sizeof...(U)> f1() {} // expected-error{{redefinition}}
26