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.
7 template<class ...> struct Tuple { };
8 template<class ... Types> int &g(Tuple<Types ...>); // #1
9 template<class T1, class ... Types> float &g(Tuple<T1, Types ...>); // #2
10 template<class T1, class ... Types> double &g(Tuple<T1, Types& ...>); // #3
11 
test_g()12 void 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 
19 template<class ... Types> int &h(int (*)(Types ...)); // #1
20 template<class T1, class ... Types> float &h(int (*)(T1, Types ...)); // #2
21 template<class T1, class ... Types> double &h(int (*)(T1, Types& ...)); // #3
22 
test_h()23 void 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