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/*
10 This test checks that adjustedPtr is correct as there exist offsets in this
11 object for the various subobjects, all of which have a unique id_ to
12 check against.
13*/
14
15// UNSUPPORTED: no-exceptions
16
17// Compilers emit warnings about exceptions of type 'Child' being caught by
18// an earlier handler of type 'Base'. Congrats, you've just diagnosed the
19// behavior under test.
20// ADDITIONAL_COMPILE_FLAGS: -Wno-exceptions
21
22#include <exception>
23#include <stdlib.h>
24#include <assert.h>
25
26struct B
27{
28 static int count;
29 int id_;
30 explicit B(int id) : id_(id) {count++;}
31 B(const B& a) : id_(a.id_) {count++;}
32 ~B() {count--;}
33};
34
35int B::count = 0;
36
37struct C1
38 : B
39{
40 static int count;
41 int id_;
42 explicit C1(int id) : B(id-2), id_(id) {count++;}
43 C1(const C1& a) : B(a.id_-2), id_(a.id_) {count++;}
44 ~C1() {count--;}
45};
46
47int C1::count = 0;
48
49struct C2
50 : B
51{
52 static int count;
53 int id_;
54 explicit C2(int id) : B(id-2), id_(id) {count++;}
55 C2(const C2& a) : B(a.id_-2), id_(a.id_) {count++;}
56 ~C2() {count--;}
57};
58
59int C2::count = 0;
60
61struct A
62 : C1, C2
63{
64 static int count;
65 int id_;
66 explicit A(int id) : C1(id-1), C2(id-2), id_(id) {count++;}
67 A(const A& a) : C1(a.id_-1), C2(a.id_-2), id_(a.id_) {count++;}
68 ~A() {count--;}
69};
70
71int A::count = 0;
72
73void f1()
74{
75 assert(A::count == 0);
76 assert(C1::count == 0);
77 assert(C2::count == 0);
78 assert(B::count == 0);
79 A a(5);
80 assert(A::count == 1);
81 assert(C1::count == 1);
82 assert(C2::count == 1);
83 assert(B::count == 2);
84
85 assert(a.id_ == 5);
86 assert(static_cast<C1&>(a).id_ == 4);
87 assert(static_cast<C2&>(a).id_ == 3);
88 assert(static_cast<B&>(static_cast<C1&>(a)).id_ == 2);
89 assert(static_cast<B&>(static_cast<C2&>(a)).id_ == 1);
90 throw a;
91 assert(false);
92}
93
94void f2()
95{
96 try
97 {
98 assert(A::count == 0);
99 assert(C1::count == 0);
100 assert(C2::count == 0);
101 assert(B::count == 0);
102 f1();
103 assert(false);
104 }
105 catch (const A& a) // can catch A
106 {
107 assert(a.id_ == 5);
108 assert(static_cast<const C1&>(a).id_ == 4);
109 assert(static_cast<const C2&>(a).id_ == 3);
110 assert(static_cast<const B&>(static_cast<const C1&>(a)).id_ == 2);
111 assert(static_cast<const B&>(static_cast<const C2&>(a)).id_ == 1);
112 throw;
113 }
114 catch (const C1&)
115 {
116 assert(false);
117 }
118 catch (const C2&)
119 {
120 assert(false);
121 }
122 catch (const B&)
123 {
124 assert(false);
125 }
126}
127
128void f3()
129{
130 try
131 {
132 assert(A::count == 0);
133 assert(C1::count == 0);
134 assert(C2::count == 0);
135 assert(B::count == 0);
136 f2();
137 assert(false);
138 }
139 catch (const B& a) // can not catch B (ambiguous base)
140 {
141 assert(false);
142 }
143 catch (const C1& c1) // can catch C1
144 {
145 assert(c1.id_ == 4);
146 assert(static_cast<const B&>(c1).id_ == 2);
147 throw;
148 }
149 catch (const C2&)
150 {
151 assert(false);
152 }
153}
154
155void f4()
156{
157 try
158 {
159 assert(A::count == 0);
160 assert(C1::count == 0);
161 assert(C2::count == 0);
162 assert(B::count == 0);
163 f3();
164 assert(false);
165 }
166 catch (const B& a) // can not catch B (ambiguous base)
167 {
168 assert(false);
169 }
170 catch (const C2& c2) // can catch C2
171 {
172 assert(c2.id_ == 3);
173 assert(static_cast<const B&>(c2).id_ == 1);
174 throw;
175 }
176 catch (const C1&)
177 {
178 assert(false);
179 }
180}
181
182int main(int, char**)
183{
184 try
185 {
186 f4();
187 assert(false);
188 }
189 catch (...)
190 {
191 }
192 assert(A::count == 0);
193 assert(C1::count == 0);
194 assert(C2::count == 0);
195 assert(B::count == 0);
196
197 return 0;
198}
199

source code of libcxxabi/test/catch_class_03.pass.cpp