1// { dg-do run }
2
3// Copyright (C) 2003 Free Software Foundation, Inc.
4// Contributed by Nathan Sidwell 12 Dec 2003 <nathan@codesourcery.com>
5// Origin:  grigory@stl.sarov.ru
6
7// PR c++/13118. Missing covariant thunk.
8
9struct c0 {};
10struct c1 : virtual c0 {
11  virtual c0* f6();
12};
13
14struct c5 {
15    virtual void foo();
16};
17
18struct c10 : virtual c1 {
19    virtual void foo();
20};
21
22struct c1a : c1 {}; // disambiguation
23
24struct c11 : virtual c10, c1a {
25  int i;
26  virtual c1* f6 () = 0;
27};
28
29struct c18 : c5, virtual c1 {
30    virtual void bar();
31};
32
33struct c28 : virtual c0, virtual c11 {
34    virtual c18* f6();
35};
36
37c0 *c1::f6 () {}
38void c5::foo () {}
39void c10::foo () {}
40void c18::bar () {}
41
42c18 ret;
43
44c18 *c28::f6 ()
45{
46  return &ret;
47}
48
49bool check_c1 (c1 *ptr)
50{
51  c0 *r = ptr->f6 ();
52  return r != &ret;
53}
54bool check_c10 (c10 *ptr)
55{
56  c0 *r = ptr->f6 ();
57  return r != &ret;
58}
59bool check_c11 (c11 *ptr)
60{
61  c1 *r = ptr->f6 ();
62  return r != &ret;
63}
64bool check_c28 (c28 *ptr)
65{
66  c18 *r = ptr->f6 ();
67  return r != &ret;
68}
69
70int main ()
71{
72  c28 obj;
73
74  if (check_c1 (static_cast<c1a *> (&obj)))
75    return 1;
76  if (check_c1 (static_cast<c10 *> (&obj)))
77    return 2;
78  if (check_c10 (&obj))
79    return 3;
80  if (check_c11 (&obj))
81    return 4;
82  if (check_c28 (&obj))
83    return 5;
84  return 0;
85}
86