p12.cpp revision 8e8fb3be5bd78f0564444eca02b404566a5f3b5d 
1// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
2// expected-no-diagnostics
3
4// Note: Partial ordering of function templates containing template
5// parameter packs is independent of the number of deduced arguments
6// for those template parameter packs.
7template<class ...> struct Tuple { };
8template<class ... Types> int &g(Tuple<Types ...>); // #1
9template<class T1, class ... Types> float &g(Tuple<T1, Types ...>); // #2
10template<class T1, class ... Types> double &g(Tuple<T1, Types& ...>); // #3
11
12void test_g() {
13  int &ir1 = g(Tuple<>());
14  float &fr1 = g(Tuple<int, float>());
15  double &dr1 = g(Tuple<int, float&>());
16  double &dr2 = g(Tuple<int>());
17}
18
19template<class ... Types> int &h(int (*)(Types ...)); // #1
20template<class T1, class ... Types> float &h(int (*)(T1, Types ...)); // #2
21template<class T1, class ... Types> double &h(int (*)(T1, Types& ...)); // #3
22
23void test_h() {
24  int &ir1 = h((int(*)())0);
25  float &fr1 = h((int(*)(int, float))0);
26  double &dr1 = h((int(*)(int, float&))0);
27  double &dr2 = h((int(*)(int))0);
28}
29