clang/test/CXX/temp/temp.spec/temp.expl.spec/p20.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 template<typename T>
   3 void f(T);
   4
   5 template<typename T>
   6 struct A { }; // expected-note{{template is declared here}}
   7
   8 struct X {
   9   template<> friend void f<int>(int); // expected-error{{in a friend}}
  10   template<> friend class A<int>; // expected-error{{cannot be a friend}}
  11
  12   friend void f<float>(float); // okay
  13   friend class A<float>; // okay
  14 };
  15
  16 struct PR41792 {
  17   // expected-error@+1{{cannot declare an explicit specialization in a friend}}
  18   template <> friend void f<>(int);
  19
  20   // expected-error@+2{{template specialization declaration cannot be a friend}}
  21   // expected-error@+1{{too few template arguments for class template 'A'}}
  22   template <> friend class A<>;
  23 };