1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // This test requires PR33425, PR33487 and PR33439.
10 // XFAIL: using-built-library-before-llvm-9
11
12 #include <cassert>
13
14 // This test explicitly tests dynamic cast with types that have inaccessible
15 // bases.
16 #if defined(__clang__)
17 # pragma clang diagnostic ignored "-Winaccessible-base"
18 #elif defined(__GNUC__)
19 # pragma GCC diagnostic ignored "-Winaccessible-base"
20 #endif
21
22 typedef char Pad1[43981];
23 typedef char Pad2[34981];
24 typedef char Pad3[93481];
25 typedef char Pad4[13489];
26 typedef char Pad5[81349];
27 typedef char Pad6[34819];
28 typedef char Pad7[3489];
29
30 namespace t1
31 {
32
33 // PR33425
~C3t1::C334 struct C3 { virtual ~C3() {} Pad1 _; };
35 struct C5 : protected virtual C3 { Pad2 _; };
36 struct C6 : virtual C5 { Pad3 _; };
37 struct C7 : virtual C3 { Pad4 _; };
38 struct C9 : C6, C7 { Pad5 _; };
39
40 C9 c9;
41 C3 *c3 = &c9;
42
test()43 void test()
44 {
45 assert(dynamic_cast<C3*>(c3) == static_cast<C3*>(&c9));
46 assert(dynamic_cast<C5*>(c3) == static_cast<C5*>(&c9));
47 assert(dynamic_cast<C6*>(c3) == static_cast<C6*>(&c9));
48 assert(dynamic_cast<C7*>(c3) == static_cast<C7*>(&c9));
49 assert(dynamic_cast<C9*>(c3) == static_cast<C9*>(&c9));
50 }
51
52 } // t1
53
54 namespace t2
55 {
56
57 // PR33425
~Srct2::Src58 struct Src { virtual ~Src() {} Pad1 _; };
59 struct Mask : protected virtual Src { Pad2 _; };
60 struct Dest : Mask { Pad3 _; };
61 struct Root : Dest, virtual Src { Pad4 _; };
62
63 Root root;
64 Src *src = &root;
65
test()66 void test()
67 {
68 assert(dynamic_cast<Src*>(src) == static_cast<Src*>(&root));
69 assert(dynamic_cast<Mask*>(src) == static_cast<Mask*>(&root));
70 assert(dynamic_cast<Dest*>(src) == static_cast<Dest*>(&root));
71 assert(dynamic_cast<Root*>(src) == static_cast<Root*>(&root));
72 }
73
74 } // t2
75
76 namespace t3
77 {
78
79 // PR33487
~Class1t3::Class180 struct Class1 { virtual ~Class1() {} Pad1 _; };
81 struct Shared : virtual Class1 { Pad2 _; };
82 struct Class6 : virtual Shared { Pad3 _; };
83 struct Left : Class6 { Pad4 _; };
84 struct Right : Class6 { Pad5 _; };
85 struct Main : Left, Right { Pad6 _; };
86
87 Main m;
88 Class1 *c1 = &m;
89
test()90 void test()
91 {
92 assert(dynamic_cast<Class1*>(c1) == static_cast<Class1*>(&m));
93 assert(dynamic_cast<Shared*>(c1) == static_cast<Shared*>(&m));
94 assert(dynamic_cast<Class6*>(c1) == 0);
95 assert(dynamic_cast<Left*>(c1) == static_cast<Left*>(&m));
96 assert(dynamic_cast<Right*>(c1) == static_cast<Right*>(&m));
97 assert(dynamic_cast<Main*>(c1) == static_cast<Main*>(&m));
98 }
99
100 } // t3
101
102 namespace t4
103 {
104
105 // PR33439
~C2t4::C2106 struct C2 { virtual ~C2() {} Pad1 _; };
~C3t4::C3107 struct C3 { virtual ~C3() {} Pad2 _; };
108 struct C4 : C3 { Pad3 _; };
109 struct C8 : C2, virtual C4 { Pad4 _; };
110 struct C9 : C4, C8 { Pad5 _; };
111
112 C9 c9;
113 C2 *c2 = &c9;
114
test()115 void test()
116 {
117 assert(dynamic_cast<C2*>(c2) == static_cast<C2*>(&c9));
118 assert(dynamic_cast<C3*>(c2) == 0);
119 assert(dynamic_cast<C4*>(c2) == 0);
120 assert(dynamic_cast<C8*>(c2) == static_cast<C8*>(&c9));
121 assert(dynamic_cast<C9*>(c2) == static_cast<C9*>(&c9));
122 }
123
124 } // t4
125
126 namespace t5
127 {
128
129 // PR33439
~Dummyt5::Dummy130 struct Dummy { virtual ~Dummy() {} Pad1 _; };
~Srct5::Src131 struct Src { virtual ~Src() {} Pad2 _; };
132 struct Dest : Dummy { Pad3 _; };
133 struct A1 : Dest { Pad4 _; };
134 struct A2 : Dest { Pad5 _; };
135 struct Root : Src, A1, A2 { Pad6 _; };
136
137 Root root;
138 Src *src = &root;
139
test()140 void test()
141 {
142 assert(dynamic_cast<Dummy*>(src) == 0);
143 assert(dynamic_cast<Src*>(src) == static_cast<Src*>(&root));
144 assert(dynamic_cast<Dest*>(src) == 0);
145 assert(dynamic_cast<A1*>(src) == static_cast<A1*>(&root));
146 assert(dynamic_cast<A2*>(src) == static_cast<A2*>(&root));
147 }
148
149 } // t5
150
main(int,char **)151 int main(int, char**)
152 {
153 t1::test();
154 t2::test();
155 t3::test();
156 t4::test();
157 t5::test();
158
159 return 0;
160 }
161