1// { dg-do compile }
2
3// Copyright (C) 2004 Free Software Foundation
4// Contributed by Kriang Lerdsuwanakij <lerdsuwa@users.sourceforge.net>
5
6// Nested class template of class template as friend
7
8template <class T> struct A
9{
10  template <class U> struct B
11  {
12    void f();
13  };
14};
15
16class C {
17  int i;
18  template <class T> template <class U> friend struct A<T>::B;
19};
20
21template <class T> struct A<T*>
22{
23  template <class U> struct B
24  {
25    void f();
26  };
27};
28
29template <> struct A<char>
30{
31  template <class U> struct B
32  {
33    void f();
34  };
35};
36
37template <class T> template <class U> void A<T>::B<U>::f()
38{
39  C c;
40  c.i = 0;
41}
42
43template <class T> template <class U> void A<T*>::B<U>::f()
44{
45  C c;
46  c.i = 0;
47}
48
49template <class U> void A<char>::B<U>::f()
50{
51  C c;
52  c.i = 0;
53}
54
55template <> void A<char>::B<int>::f()
56{
57  C c;
58  c.i = 0;
59}
60
61int main()
62{
63  A<int>::B<int> b1;
64  b1.f();
65  A<int *>::B<int> b2;
66  b2.f();
67  A<char>::B<char> b3;
68  b3.f();
69  A<char>::B<int> b4;
70  b4.f();
71}
72