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150
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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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173
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15 // UNSUPPORTED: no-exceptions
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150
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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 void f1()
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76 {
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77 assert(A::count == 0);
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78 assert(C1::count == 0);
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79 assert(C2::count == 0);
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80 assert(B::count == 0);
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81 A a(5);
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82 assert(A::count == 1);
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83 assert(C1::count == 1);
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84 assert(C2::count == 1);
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85 assert(B::count == 1);
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86
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87 assert(a.id_ == 5);
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88 assert(static_cast<C1&>(a).id_ == 4);
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89 assert(static_cast<C2&>(a).id_ == 3);
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90 assert(static_cast<B&>(a).id_ == 8);
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91 throw a;
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92 assert(false);
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93 }
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94
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95 void f2()
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96 {
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97 try
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98 {
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99 assert(A::count == 0);
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100 assert(C1::count == 0);
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101 assert(C2::count == 0);
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102 assert(B::count == 0);
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103 f1();
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104 assert(false);
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105 }
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106 catch (const A& a) // can catch A
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107 {
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108 assert(a.id_ == 5);
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109 assert(static_cast<const C1&>(a).id_ == 4);
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110 assert(static_cast<const C2&>(a).id_ == 3);
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111 assert(static_cast<const B&>(a).id_ == 8);
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112 throw;
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113 }
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114 catch (const C1&)
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115 {
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116 assert(false);
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117 }
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118 catch (const C2&)
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119 {
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120 assert(false);
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121 }
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122 catch (const B&)
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123 {
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124 assert(false);
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125 }
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126 }
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127
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128 void f3()
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129 {
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130 try
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131 {
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132 assert(A::count == 0);
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133 assert(C1::count == 0);
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134 assert(C2::count == 0);
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135 assert(B::count == 0);
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136 f2();
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137 assert(false);
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138 }
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139 catch (const B& a) // can catch B
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140 {
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141 assert(static_cast<const B&>(a).id_ == 8);
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142 throw;
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143 }
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144 catch (const C1& c1)
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145 {
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146 assert(false);
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147 }
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148 catch (const C2&)
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149 {
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150 assert(false);
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151 }
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152 }
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153
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154 void f4()
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155 {
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156 try
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157 {
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158 assert(A::count == 0);
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159 assert(C1::count == 0);
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160 assert(C2::count == 0);
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161 assert(B::count == 0);
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162 f3();
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163 assert(false);
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164 }
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165 catch (const C2& c2) // can catch C2
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166 {
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167 assert(c2.id_ == 3);
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168 throw;
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169 }
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170 catch (const B& a) // can not catch B (ambiguous base)
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171 {
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172 assert(false);
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173 }
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174 catch (const C1&)
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175 {
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176 assert(false);
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177 }
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178 }
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179
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180 void f5()
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181 {
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182 try
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183 {
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184 assert(A::count == 0);
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185 assert(C1::count == 0);
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186 assert(C2::count == 0);
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187 assert(B::count == 0);
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188 f4();
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189 assert(false);
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190 }
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191 catch (const C1& c1) // can catch C1
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192 {
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193 assert(c1.id_ == 4);
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194 assert(static_cast<const B&>(c1).id_ == 8);
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195 throw;
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196 }
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197 catch (const B& a)
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198 {
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199 assert(false);
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200 }
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201 catch (const C2&)
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202 {
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203 assert(false);
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204 }
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205 }
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206
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207 int main()
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208 {
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209 try
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210 {
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211 f5();
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212 assert(false);
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213 }
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214 catch (...)
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215 {
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216 }
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217 assert(A::count == 0);
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218 assert(C1::count == 0);
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219 assert(C2::count == 0);
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220 assert(B::count == 0);
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221 }
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