30     Opaque<0> foo(Opaque<0>);
31     Opaque<0> foo(Opaque<1>);
32     Opaque<0> foo(Opaque<2>);
37     using Base::foo;
38     Opaque<1> foo(Opaque<1>);
39     Opaque<1> foo(Opaque<3>);
41     void test0() { Opaque<0> _ = foo(Opaque<0>()); }  in test0()
42     void test1() { Opaque<1> _ = foo(Opaque<1>()); }  in test1()
43     void test2() { Opaque<0> _ = foo(Opaque<2>()); }  in test2()
44     void test3() { Opaque<1> _ = foo(Opaque<3>()); }  in test3()
49     Opaque<1> foo(Opaque<1>);
50     Opaque<1> foo(Opaque<3>);
51     using Base::foo;
53     void test0() { Opaque<0> _ = foo(Opaque<0>()); }  in test0()
54     void test1() { Opaque<1> _ = foo(Opaque<1>()); }  in test1()
55     void test2() { Opaque<0> _ = foo(Opaque<2>()); }  in test2()
56     void test3() { Opaque<1> _ = foo(Opaque<3>()); }  in test3()
61     Opaque<1> foo(Opaque<0>);
62     using Base::foo;
63     Opaque<1> foo(Opaque<2>);
64     Opaque<1> foo(Opaque<3>);
66     void test0() { Opaque<1> _ = foo(Opaque<0>()); }  in test0()
67     void test1() { Opaque<0> _ = foo(Opaque<1>()); }  in test1()
68     void test2() { Opaque<1> _ = foo(Opaque<2>()); }  in test2()
69     void test3() { Opaque<1> _ = foo(Opaque<3>()); }  in test3()
76     void foo(int);
80     using Base::foo;
81     void foo(T);
83     void testUnresolved(int i) { foo(i); }  in testUnresolved()
88     d1.foo(i);  in test0()
94     void foo(T);
95     using Base::foo;
97     void testUnresolved(int i) { foo(i); }  in testUnresolved()
102     d2.foo(i);  in test1()
110     template <class T> Opaque<0> foo() { return Opaque<0>(); }  in foo()  function
111     template <int n> Opaque<1> foo() { return Opaque<1>(); }  in foo()  function
115     using Base::foo;
116 …template <int n> Opaque<2> foo() { return Opaque<2>(); } // expected-note {{invalid explicitly-spe…  in foo()  function
120 …template <int n> Opaque<2> foo() { return Opaque<2>(); } // expected-note {{invalid explicitly-spe…  in foo()  function
121     using Base::foo;
125     using Base::foo;
126 …template <class T> Opaque<3> foo() { return Opaque<3>(); } // expected-note {{invalid explicitly-s…  in foo()  function
130 …template <class T> Opaque<3> foo() { return Opaque<3>(); } // expected-note {{invalid explicitly-s…  in foo()  function
131     using Base::foo;
135     expect<0>(Base().foo<int>());  in test()
136     expect<1>(Base().foo<0>());  in test()
137 …expect<0>(Derived1().foo<int>()); // expected-error {{no matching member function for call to 'foo…  in test()
138     expect<2>(Derived1().foo<0>());  in test()
139 …expect<0>(Derived2().foo<int>()); // expected-error {{no matching member function for call to 'foo…  in test()
140     expect<2>(Derived2().foo<0>());  in test()
141     expect<3>(Derived3().foo<int>());  in test()
142 …expect<1>(Derived3().foo<0>()); // expected-error {{no matching member function for call to 'foo'}}  in test()
143     expect<3>(Derived4().foo<int>());  in test()
144 …expect<1>(Derived4().foo<0>()); // expected-error {{no matching member function for call to 'foo'}}  in test()
152     template<typename T> void foo(T);
157     using Base::foo;
162     d.foo<int>(3);  in test()