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1 //===----------------------------------------------------------------------===//
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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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221
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9 // PR33425 and PR33487 are not fixed until the dylib shipped with macOS 10.15
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252
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10 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.14
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221
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11
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12 // PR33439 isn't fixed until the dylib shipped with macOS 10.14
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252
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13 // XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11|12|13}}
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221
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14
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150
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15 #include <cassert>
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16
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17 // This test explicitly tests dynamic cast with types that have inaccessible
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18 // bases.
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19 #if defined(__clang__)
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221
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20 # pragma clang diagnostic ignored "-Winaccessible-base"
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236
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21 #elif defined(__GNUC__)
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221
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22 # pragma GCC diagnostic ignored "-Winaccessible-base"
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150
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23 #endif
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24
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25 typedef char Pad1[43981];
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26 typedef char Pad2[34981];
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27 typedef char Pad3[93481];
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28 typedef char Pad4[13489];
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29 typedef char Pad5[81349];
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30 typedef char Pad6[34819];
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31 typedef char Pad7[3489];
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32
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33 namespace t1
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34 {
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35
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36 // PR33425
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37 struct C3 { virtual ~C3() {} Pad1 _; };
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38 struct C5 : protected virtual C3 { Pad2 _; };
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39 struct C6 : virtual C5 { Pad3 _; };
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40 struct C7 : virtual C3 { Pad4 _; };
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41 struct C9 : C6, C7 { Pad5 _; };
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42
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43 C9 c9;
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44 C3 *c3 = &c9;
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45
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46 void test()
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47 {
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48 assert(dynamic_cast<C3*>(c3) == static_cast<C3*>(&c9));
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49 assert(dynamic_cast<C5*>(c3) == static_cast<C5*>(&c9));
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50 assert(dynamic_cast<C6*>(c3) == static_cast<C6*>(&c9));
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51 assert(dynamic_cast<C7*>(c3) == static_cast<C7*>(&c9));
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52 assert(dynamic_cast<C9*>(c3) == static_cast<C9*>(&c9));
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53 }
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54
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55 } // t1
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56
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57 namespace t2
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58 {
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59
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60 // PR33425
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61 struct Src { virtual ~Src() {} Pad1 _; };
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62 struct Mask : protected virtual Src { Pad2 _; };
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63 struct Dest : Mask { Pad3 _; };
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64 struct Root : Dest, virtual Src { Pad4 _; };
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65
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66 Root root;
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67 Src *src = &root;
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68
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69 void test()
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70 {
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71 assert(dynamic_cast<Src*>(src) == static_cast<Src*>(&root));
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72 assert(dynamic_cast<Mask*>(src) == static_cast<Mask*>(&root));
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73 assert(dynamic_cast<Dest*>(src) == static_cast<Dest*>(&root));
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74 assert(dynamic_cast<Root*>(src) == static_cast<Root*>(&root));
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75 }
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76
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77 } // t2
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78
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79 namespace t3
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80 {
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81
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82 // PR33487
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83 struct Class1 { virtual ~Class1() {} Pad1 _; };
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84 struct Shared : virtual Class1 { Pad2 _; };
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85 struct Class6 : virtual Shared { Pad3 _; };
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86 struct Left : Class6 { Pad4 _; };
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87 struct Right : Class6 { Pad5 _; };
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88 struct Main : Left, Right { Pad6 _; };
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89
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90 Main m;
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91 Class1 *c1 = &m;
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92
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93 void test()
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94 {
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95 assert(dynamic_cast<Class1*>(c1) == static_cast<Class1*>(&m));
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96 assert(dynamic_cast<Shared*>(c1) == static_cast<Shared*>(&m));
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97 assert(dynamic_cast<Class6*>(c1) == 0);
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98 assert(dynamic_cast<Left*>(c1) == static_cast<Left*>(&m));
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99 assert(dynamic_cast<Right*>(c1) == static_cast<Right*>(&m));
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100 assert(dynamic_cast<Main*>(c1) == static_cast<Main*>(&m));
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101 }
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102
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103 } // t3
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104
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105 namespace t4
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106 {
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107
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108 // PR33439
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109 struct C2 { virtual ~C2() {} Pad1 _; };
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110 struct C3 { virtual ~C3() {} Pad2 _; };
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111 struct C4 : C3 { Pad3 _; };
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112 struct C8 : C2, virtual C4 { Pad4 _; };
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113 struct C9 : C4, C8 { Pad5 _; };
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114
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115 C9 c9;
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116 C2 *c2 = &c9;
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117
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118 void test()
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119 {
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120 assert(dynamic_cast<C2*>(c2) == static_cast<C2*>(&c9));
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121 assert(dynamic_cast<C3*>(c2) == 0);
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122 assert(dynamic_cast<C4*>(c2) == 0);
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123 assert(dynamic_cast<C8*>(c2) == static_cast<C8*>(&c9));
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124 assert(dynamic_cast<C9*>(c2) == static_cast<C9*>(&c9));
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125 }
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126
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127 } // t4
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128
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129 namespace t5
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130 {
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131
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132 // PR33439
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133 struct Dummy { virtual ~Dummy() {} Pad1 _; };
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134 struct Src { virtual ~Src() {} Pad2 _; };
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135 struct Dest : Dummy { Pad3 _; };
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136 struct A1 : Dest { Pad4 _; };
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137 struct A2 : Dest { Pad5 _; };
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138 struct Root : Src, A1, A2 { Pad6 _; };
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139
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140 Root root;
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141 Src *src = &root;
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142
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143 void test()
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144 {
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145 assert(dynamic_cast<Dummy*>(src) == 0);
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146 assert(dynamic_cast<Src*>(src) == static_cast<Src*>(&root));
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147 assert(dynamic_cast<Dest*>(src) == 0);
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148 assert(dynamic_cast<A1*>(src) == static_cast<A1*>(&root));
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149 assert(dynamic_cast<A2*>(src) == static_cast<A2*>(&root));
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150 }
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151
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152 } // t5
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153
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221
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154 int main(int, char**)
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150
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155 {
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156 t1::test();
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157 t2::test();
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158 t3::test();
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159 t4::test();
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160 t5::test();
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221
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161
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162 return 0;
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150
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163 }
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