clang/test/CXX/class/class.friend/p1-ambiguous.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // expected-no-diagnostics
   3
   4 // Make sure that friend declarations don't introduce ambiguous
   5 // declarations.
   6
   7 // Test case courtesy of Shantonu Sen.
   8 // Bug 4784.
   9
  10 class foo;
  11
  12 extern "C" {
  13   int c_func(foo *a);
  14 };
  15 int cpp_func(foo *a);
  16
  17 class foo {
  18 public:
  19   friend int c_func(foo *a);
  20   friend int cpp_func(foo *a);
  21   int caller();
  22 private:
  23   int x;
  24 };
  25
  26 int c_func(foo *a) {
  27   return a->x;
  28 }
  29
  30 int cpp_func(foo *a) {
  31   return a->x;
  32 }
  33
  34 int foo::caller() {
  35     c_func(this);
  36     cpp_func(this);
  37     return 0;
  38 }