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1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 template<class T> struct A {
3        struct B { };
4        template<class U> struct C { };
5 };
6      template<> struct A<int> {
7        void f(int);
8 };
h()9 void h() {
10   A<int> a;
11   a.f(16);
12 }
13 // A<int>::f must be defined somewhere
14 // template<> not used for a member of an // explicitly specialized class template
f(int)15 void A<int>::f(int) { /* ... */ }
16   template<> struct A<char>::B {
17     void f();
18 };
19 // template<> also not used when defining a member of // an explicitly specialized member class
f()20 void A<char>::B::f() { /* ... */ }
21   template<> template<class U> struct A<char>::C {
22     void f();
23 };
24 
25 template<>
f()26 template<class U> void A<char>::C<U>::f() { /* ... */ }
27   template<> struct A<short>::B {
28     void f();
29 };
f()30 template<> void A<short>::B::f() { /* ... */ } // expected-error{{no function template matches function template specialization 'f'}}
31   template<> template<class U> struct A<short>::C {
32     void f();
33 };
f()34 template<class U> void A<short>::C<U>::f() { /* ... */ } // expected-error{{template parameter list matching the non-templated nested type 'A<short>' should be empty ('template<>')}}
35