clang/test/SemaCXX/PR12361.cpp

   1  // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
   2  // RUN: %clang_cc1 -fsyntax-only -verify -std=c++17 %s
   3
   4 class D {
   5     class E{
   6         class F{}; // expected-note{{implicitly declared private here}}
   7         friend  void foo(D::E::F& q);
   8         };
   9     friend  void foo(D::E::F& q); // expected-error{{'F' is a private member of 'D::E'}}
  10     };
  11
  12 void foo(D::E::F& q) {}
  13
  14 class D1 {
  15     class E1{
  16         class F1{}; // expected-note{{implicitly declared private here}}
  17         friend  D1::E1::F1 foo1();
  18         };
  19     friend  D1::E1::F1 foo1(); // expected-error{{'F1' is a private member of 'D1::E1'}}
  20     };
  21
  22 D1::E1::F1 foo1() { return D1::E1::F1(); }
  23
  24 class D2 {
  25     class E2{
  26         class F2{};
  27         friend  void foo2();
  28         };
  29     friend  void foo2(){ D2::E2::F2 c;}
  30     };