p3-cxx0x.cpp revision ce6426feda94ca716ee7743b71961850740eb08d 
1// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s
2template<typename T>
3class X0 {
4  friend T;
5};
6
7class Y1 { };
8enum E1 { };
9X0<Y1> x0a;
10X0<Y1 *> x0b;
11X0<int> x0c;
12X0<E1> x0d;
13
14template<typename T>
15class X1 {
16  friend typename T::type; // expected-error{{no type named 'type' in 'Y1'}}
17};
18
19struct Y2 {
20  struct type { };
21};
22
23struct Y3 {
24  typedef int type;
25};
26
27X1<Y2> x1a;
28X1<Y3> x1b;
29X1<Y1> x1c; // expected-note{{in instantiation of template class 'X1<Y1>' requested here}}
30
31template<typename T> class B;
32
33template<typename T>
34class A {
35  T x;
36public:
37  class foo {};
38  static int y;
39  template <typename S> friend class B<S>::ty; // expected-warning {{dependent nested name specifier 'B<S>::' for friend class declaration is not supported}}
40};
41
42template<typename T> class B { typedef int ty; };
43
44template<> class B<int> {
45  class ty {
46    static int f(A<int> &a) { return a.y; } // ok, befriended
47  };
48};
49int f(A<char> &a) { return a.y; } // FIXME: should be an error
50
51struct {
52  // Ill-formed
53  int friend; // expected-error {{'friend' must appear first in a non-function declaration}}
54  unsigned friend int; // expected-error {{'friend' must appear first in a non-function declaration}}
55  const volatile friend int; // expected-error {{'friend' must appear first in a non-function declaration}}
56  int
57          friend; // expected-error {{'friend' must appear first in a non-function declaration}}
58
59  // OK
60  int friend foo(void);
61  friend int;
62  friend const volatile int;
63      friend
64
65  float;
66  template<typename T> friend class A<T>::foo; // expected-warning {{not supported}}
67} a;
68
69void testA() { (void)sizeof(A<int>); }
70