clang/test/CXX/temp/temp.spec/temp.expl.spec/p5-example.cpp

   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 };
   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
  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
  20 void A<char>::B::f() { /* ... */ }
  21   template<> template<class U> struct A<char>::C {
  22     void f();
  23 };
  24
  25 template<>
  26 template<class U> void A<char>::C<U>::f() { /* ... */ }
  27   template<> struct A<short>::B {
  28     void f();
  29 };
  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 };
  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<>')}}