1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3struct A {};
4struct B : A {};
5struct C : B {};
6
7struct D : private A {};
8struct E : A {};
9struct F : B, E {};
10
11struct Incomplete; // expected-note 2 {{forward declaration of 'Incomplete'}}
12
13struct Poly
14{
15  virtual void f();
16};
17
18struct PolyDerived : Poly
19{
20};
21
22void basic_bad()
23{
24  // ptr -> nonptr
25  (void)dynamic_cast<A>((A*)0); // expected-error {{'A' is not a reference or pointer}}
26  // nonptr -> ptr
27  (void)dynamic_cast<A*>(0); // expected-error {{'int' is not a pointer}}
28  // ptr -> noncls
29  (void)dynamic_cast<int*>((A*)0); // expected-error {{'int' is not a class}}
30  // noncls -> ptr
31  (void)dynamic_cast<A*>((int*)0); // expected-error {{'int' is not a class}}
32  // ref -> noncls
33  (void)dynamic_cast<int&>(*((A*)0)); // expected-error {{'int' is not a class}}
34  // noncls -> ref
35  (void)dynamic_cast<A&>(*((int*)0)); // expected-error {{'int' is not a class}}
36  // ptr -> incomplete
37  (void)dynamic_cast<Incomplete*>((A*)0); // expected-error {{'Incomplete' is an incomplete type}}
38  // incomplete -> ptr
39  (void)dynamic_cast<A*>((Incomplete*)0); // expected-error {{'Incomplete' is an incomplete type}}
40  // rvalue -> lvalue
41  (void)dynamic_cast<A&>(A()); // expected-error {{dynamic_cast from rvalue to reference type 'A &'}}
42}
43
44void same()
45{
46  (void)dynamic_cast<A*>((A*)0);
47  (void)dynamic_cast<A&>(*((A*)0));
48}
49
50void up()
51{
52  (void)dynamic_cast<A*>((B*)0);
53  (void)dynamic_cast<A&>(*((B*)0));
54  (void)dynamic_cast<A*>((C*)0);
55  (void)dynamic_cast<A&>(*((C*)0));
56
57  // Inaccessible
58  //(void)dynamic_cast<A*>((D*)0);
59  //(void)dynamic_cast<A&>(*((D*)0));
60
61  // Ambiguous
62  (void)dynamic_cast<A*>((F*)0); // expected-error {{ambiguous conversion from derived class 'F' to base class 'A':\n    struct F -> struct B -> struct A\n    struct F -> struct E -> struct A}}
63  (void)dynamic_cast<A&>(*((F*)0)); // expected-error {{ambiguous conversion from derived class 'F' to base class 'A':\n    struct F -> struct B -> struct A\n    struct F -> struct E -> struct A}}
64}
65
66void poly()
67{
68  (void)dynamic_cast<A*>((Poly*)0);
69  (void)dynamic_cast<A&>(*((Poly*)0));
70  (void)dynamic_cast<A*>((PolyDerived*)0);
71  (void)dynamic_cast<A&>(*((PolyDerived*)0));
72
73  // Not polymorphic source
74  (void)dynamic_cast<Poly*>((A*)0); // expected-error {{'A' is not polymorphic}}
75  (void)dynamic_cast<PolyDerived&>(*((A*)0)); // expected-error {{'A' is not polymorphic}}
76}
77