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. It also checks that virtual bases work properly
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 : virtual 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 : virtual private 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) : B(id+3), C1(id-1), C2(id-2), id_(id) {count++;}
67 A(const A& a) : B(a.id_+3), C1(a.id_-1), C2(a.id_-2), id_(a.id_) {count++;}
68 ~A() {count--;}
69};
70
71int A::count = 0;
72
73A global_a(5);
74
75void f1()
76{
77 throw &global_a;
78 assert(false);
79}
80
81void f2()
82{
83 try
84 {
85 f1();
86 assert(false);
87 }
88 catch (const A* a) // can catch A
89 {
90 assert(a->id_ == 5);
91 assert(static_cast<const C1*>(a)->id_ == 4);
92 assert(static_cast<const C2*>(a)->id_ == 3);
93 assert(static_cast<const B*>(a)->id_ == 8);
94 throw;
95 }
96 catch (const C1*)
97 {
98 assert(false);
99 }
100 catch (const C2*)
101 {
102 assert(false);
103 }
104 catch (const B*)
105 {
106 assert(false);
107 }
108}
109
110void f3()
111{
112 try
113 {
114 f2();
115 assert(false);
116 }
117 catch (const B* a) // can catch B
118 {
119 assert(static_cast<const B*>(a)->id_ == 8);
120 throw;
121 }
122 catch (const C1* c1)
123 {
124 assert(false);
125 }
126 catch (const C2*)
127 {
128 assert(false);
129 }
130}
131
132void f4()
133{
134 try
135 {
136 f3();
137 assert(false);
138 }
139 catch (const C2* c2) // can catch C2
140 {
141 assert(c2->id_ == 3);
142 throw;
143 }
144 catch (const B* a)
145 {
146 assert(false);
147 }
148 catch (const C1*)
149 {
150 assert(false);
151 }
152}
153
154void f5()
155{
156 try
157 {
158 f4();
159 assert(false);
160 }
161 catch (const C1* c1) // can catch C1
162 {
163 assert(c1->id_ == 4);
164 assert(static_cast<const B*>(c1)->id_ == 8);
165 throw;
166 }
167 catch (const B* a)
168 {
169 assert(false);
170 }
171 catch (const C2*)
172 {
173 assert(false);
174 }
175}
176
177int main(int, char**)
178{
179 try
180 {
181 f5();
182 assert(false);
183 }
184 catch (...)
185 {
186 }
187
188 return 0;
189}
190

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