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1 //===---------------------- catch_class_04.cpp ----------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 /*
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10 This test checks that adjustedPtr is correct as there exist offsets in this
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11 object for the various subobjects, all of which have a unique id_ to
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12 check against. It also checks that virtual bases work properly
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13 */
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14
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15 // UNSUPPORTED: libcxxabi-no-exceptions
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16
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17 #include <exception>
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18 #include <stdlib.h>
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19 #include <assert.h>
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20
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21 // Clang emits warnings about exceptions of type 'Child' being caught by
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22 // an earlier handler of type 'Base'. Congrats clang, you've just
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23 // diagnosed the behavior under test.
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24 #if defined(__clang__)
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25 #pragma clang diagnostic ignored "-Wexceptions"
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26 #endif
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27
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28 struct B
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29 {
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30 static int count;
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31 int id_;
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32 explicit B(int id) : id_(id) {count++;}
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33 B(const B& a) : id_(a.id_) {count++;}
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34 ~B() {count--;}
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35 };
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36
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37 int B::count = 0;
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38
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39 struct C1
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40 : virtual B
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41 {
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42 static int count;
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43 int id_;
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44 explicit C1(int id) : B(id-2), id_(id) {count++;}
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45 C1(const C1& a) : B(a.id_-2), id_(a.id_) {count++;}
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46 ~C1() {count--;}
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47 };
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48
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49 int C1::count = 0;
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50
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51 struct C2
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52 : virtual private B
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53 {
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54 static int count;
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55 int id_;
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56 explicit C2(int id) : B(id-2), id_(id) {count++;}
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57 C2(const C2& a) : B(a.id_-2), id_(a.id_) {count++;}
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58 ~C2() {count--;}
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59 };
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60
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61 int C2::count = 0;
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62
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63 struct A
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64 : C1, C2
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65 {
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66 static int count;
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67 int id_;
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68 explicit A(int id) : B(id+3), C1(id-1), C2(id-2), id_(id) {count++;}
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69 A(const A& a) : B(a.id_+3), C1(a.id_-1), C2(a.id_-2), id_(a.id_) {count++;}
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70 ~A() {count--;}
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71 };
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72
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73 int A::count = 0;
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74
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75 A a(5);
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76
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77 void f1()
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78 {
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79 throw &a;
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80 assert(false);
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81 }
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82
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83 void f2()
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84 {
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85 try
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86 {
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87 f1();
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88 assert(false);
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89 }
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90 catch (const A* a) // can catch A
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91 {
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92 assert(a->id_ == 5);
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93 assert(static_cast<const C1*>(a)->id_ == 4);
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94 assert(static_cast<const C2*>(a)->id_ == 3);
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95 assert(static_cast<const B*>(a)->id_ == 8);
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96 throw;
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97 }
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98 catch (const C1*)
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99 {
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100 assert(false);
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101 }
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102 catch (const C2*)
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103 {
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104 assert(false);
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105 }
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106 catch (const B*)
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107 {
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108 assert(false);
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109 }
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110 }
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111
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112 void f3()
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113 {
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114 try
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115 {
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116 f2();
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117 assert(false);
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118 }
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119 catch (const B* a) // can catch B
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120 {
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121 assert(static_cast<const B*>(a)->id_ == 8);
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122 throw;
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123 }
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124 catch (const C1* c1)
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125 {
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126 assert(false);
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127 }
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128 catch (const C2*)
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129 {
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130 assert(false);
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131 }
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132 }
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133
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134 void f4()
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135 {
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136 try
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137 {
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138 f3();
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139 assert(false);
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140 }
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141 catch (const C2* c2) // can catch C2
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142 {
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143 assert(c2->id_ == 3);
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144 throw;
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145 }
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146 catch (const B* a)
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147 {
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148 assert(false);
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149 }
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150 catch (const C1*)
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151 {
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152 assert(false);
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153 }
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154 }
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155
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156 void f5()
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157 {
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158 try
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159 {
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160 f4();
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161 assert(false);
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162 }
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163 catch (const C1* c1) // can catch C1
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164 {
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165 assert(c1->id_ == 4);
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166 assert(static_cast<const B*>(c1)->id_ == 8);
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167 throw;
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168 }
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169 catch (const B* a)
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170 {
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171 assert(false);
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172 }
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173 catch (const C2*)
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174 {
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175 assert(false);
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176 }
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177 }
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178
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179 int main()
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180 {
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181 try
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182 {
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183 f5();
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184 assert(false);
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185 }
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186 catch (...)
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187 {
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188 }
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189 }
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