| 1 | // RUN: %clang_cc1 -std=c++17 %s -triple x86_64-linux-gnu -emit-llvm -o - | FileCheck %s --implicit-check-not='call{{.*}}dtor' |
| 2 | |
| 3 | namespace std { |
| 4 | typedef decltype(sizeof(int)) size_t; |
| 5 | |
| 6 | template <class E> |
| 7 | struct initializer_list { |
| 8 | const E *begin; |
| 9 | size_t size; |
| 10 | initializer_list() : begin(nullptr), size(0) {} |
| 11 | }; |
| 12 | } |
| 13 | |
| 14 | void then(); |
| 15 | |
| 16 | struct dtor { |
| 17 | ~dtor(); |
| 18 | }; |
| 19 | |
| 20 | dtor ctor(); |
| 21 | |
| 22 | auto &&lambda = [a = {ctor()}] {}; |
| 23 | // CHECK-LABEL: define |
| 24 | // CHECK: call {{.*}}ctor |
| 25 | // CHECK: call {{.*}}atexit{{.*}}global_array_dtor |
| 26 | |
| 27 | // CHECK-LABEL: define{{.*}}global_array_dtor |
| 28 | // CHECK: call {{.*}}dtor |
| 29 | |
| 30 | // [lifetime extension occurs if the object was obtained by] |
| 31 | // -- a temporary materialization conversion |
| 32 | // CHECK-LABEL: ref_binding |
| 33 | void ref_binding() { |
| 34 | // CHECK: call {{.*}}ctor |
| 35 | auto &&x = ctor(); |
| 36 | // CHECK: call {{.*}}then |
| 37 | then(); |
| 38 | // CHECK: call {{.*}}dtor |
| 39 | // CHECK: } |
| 40 | } |
| 41 | |
| 42 | // -- ( expression ) |
| 43 | // CHECK-LABEL: parens |
| 44 | void parens() { |
| 45 | // CHECK: call {{.*}}ctor |
| 46 | auto &&x = ctor(); |
| 47 | // CHECK: call {{.*}}then |
| 48 | then(); |
| 49 | // CHECK: call {{.*}}dtor |
| 50 | // CHECK: } |
| 51 | } |
| 52 | |
| 53 | // -- subscripting of an array |
| 54 | // CHECK-LABEL: array_subscript_1 |
| 55 | void array_subscript_1() { |
| 56 | using T = dtor[1]; |
| 57 | // CHECK: call {{.*}}ctor |
| 58 | auto &&x = T{ctor()}[0]; |
| 59 | // CHECK: call {{.*}}then |
| 60 | then(); |
| 61 | // CHECK: call {{.*}}dtor |
| 62 | // CHECK: } |
| 63 | } |
| 64 | // CHECK-LABEL: array_subscript_2 |
| 65 | void array_subscript_2() { |
| 66 | using T = dtor[1]; |
| 67 | // CHECK: call {{.*}}ctor |
| 68 | auto &&x = ((dtor*)T{ctor()})[0]; |
| 69 | // CHECK: call {{.*}}dtor |
| 70 | // CHECK: call {{.*}}then |
| 71 | then(); |
| 72 | // CHECK: } |
| 73 | } |
| 74 | |
| 75 | struct with_member { dtor d; ~with_member(); }; |
| 76 | struct with_ref_member { dtor &&d; ~with_ref_member(); }; |
| 77 | |
| 78 | // -- a class member access using the . operator [...] |
| 79 | // CHECK-LABEL: member_access_1 |
| 80 | void member_access_1() { |
| 81 | // CHECK: call {{.*}}ctor |
| 82 | auto &&x = with_member{ctor()}.d; |
| 83 | // CHECK: call {{.*}}then |
| 84 | then(); |
| 85 | // CHECK: call {{.*}}with_member |
| 86 | // CHECK: } |
| 87 | } |
| 88 | // CHECK-LABEL: member_access_2 |
| 89 | void member_access_2() { |
| 90 | // CHECK: call {{.*}}ctor |
| 91 | auto &&x = with_ref_member{ctor()}.d; |
| 92 | // CHECK: call {{.*}}with_ref_member |
| 93 | // CHECK: call {{.*}}dtor |
| 94 | // CHECK: call {{.*}}then |
| 95 | then(); |
| 96 | // CHECK: } |
| 97 | } |
| 98 | // CHECK-LABEL: member_access_3 |
| 99 | void member_access_3() { |
| 100 | // CHECK: call {{.*}}ctor |
| 101 | auto &&x = (&(const with_member&)with_member{ctor()})->d; |
| 102 | // CHECK: call {{.*}}with_member |
| 103 | // CHECK: call {{.*}}then |
| 104 | then(); |
| 105 | // CHECK: } |
| 106 | } |
| 107 | |
| 108 | // -- a pointer-to-member operation using the .* operator [...] |
| 109 | // CHECK-LABEL: member_ptr_access_1 |
| 110 | void member_ptr_access_1() { |
| 111 | // CHECK: call {{.*}}ctor |
| 112 | auto &&x = with_member{ctor()}.*&with_member::d; |
| 113 | // CHECK: call {{.*}}then |
| 114 | then(); |
| 115 | // CHECK: call {{.*}}with_member |
| 116 | // CHECK: } |
| 117 | } |
| 118 | // CHECK-LABEL: member_ptr_access_2 |
| 119 | void member_ptr_access_2() { |
| 120 | // CHECK: call {{.*}}ctor |
| 121 | auto &&x = (&(const with_member&)with_member{ctor()})->*&with_member::d; |
| 122 | // CHECK: call {{.*}}with_member |
| 123 | // CHECK: call {{.*}}then |
| 124 | then(); |
| 125 | // CHECK: } |
| 126 | } |
| 127 | |
| 128 | // -- a [named] cast [...] |
| 129 | // CHECK-LABEL: static_cast |
| 130 | void test_static_cast() { |
| 131 | // CHECK: call {{.*}}ctor |
| 132 | auto &&x = static_cast<dtor&&>(ctor()); |
| 133 | // CHECK: call {{.*}}then |
| 134 | then(); |
| 135 | // CHECK: call {{.*}}dtor |
| 136 | // CHECK: } |
| 137 | } |
| 138 | // CHECK-LABEL: const_cast |
| 139 | void test_const_cast() { |
| 140 | // CHECK: call {{.*}}ctor |
| 141 | auto &&x = const_cast<dtor&&>(ctor()); |
| 142 | // CHECK: call {{.*}}then |
| 143 | then(); |
| 144 | // CHECK: call {{.*}}dtor |
| 145 | // CHECK: } |
| 146 | } |
| 147 | // CHECK-LABEL: reinterpret_cast |
| 148 | void test_reinterpret_cast() { |
| 149 | // CHECK: call {{.*}}ctor |
| 150 | auto &&x = reinterpret_cast<dtor&&>(static_cast<dtor&&>(ctor())); |
| 151 | // CHECK: call {{.*}}then |
| 152 | then(); |
| 153 | // CHECK: call {{.*}}dtor |
| 154 | // CHECK: } |
| 155 | } |
| 156 | // CHECK-LABEL: dynamic_cast |
| 157 | void test_dynamic_cast() { |
| 158 | // CHECK: call {{.*}}ctor |
| 159 | auto &&x = dynamic_cast<dtor&&>(ctor()); |
| 160 | // CHECK: call {{.*}}then |
| 161 | then(); |
| 162 | // CHECK: call {{.*}}dtor |
| 163 | // CHECK: } |
| 164 | } |
| 165 | |
| 166 | // -- [explicit cast notation is defined in terms of the above] |
| 167 | // CHECK-LABEL: c_style_cast |
| 168 | void c_style_cast() { |
| 169 | // CHECK: call {{.*}}ctor |
| 170 | auto &&x = (dtor&&)ctor(); |
| 171 | // CHECK: call {{.*}}then |
| 172 | then(); |
| 173 | // CHECK: call {{.*}}dtor |
| 174 | // CHECK: } |
| 175 | } |
| 176 | // CHECK-LABEL: function_style_cast |
| 177 | void function_style_cast() { |
| 178 | // CHECK: call {{.*}}ctor |
| 179 | using R = dtor&&; |
| 180 | auto &&x = R(ctor()); |
| 181 | // CHECK: call {{.*}}then |
| 182 | then(); |
| 183 | // CHECK: call {{.*}}dtor |
| 184 | // CHECK: } |
| 185 | } |
| 186 | |
| 187 | // -- a conditional operator |
| 188 | // CHECK-LABEL: conditional |
| 189 | void conditional(bool b) { |
| 190 | // CHECK: call {{.*}}ctor |
| 191 | // CHECK: call {{.*}}ctor |
| 192 | auto &&x = b ? (dtor&&)ctor() : (dtor&&)ctor(); |
| 193 | // CHECK: call {{.*}}then |
| 194 | then(); |
| 195 | // CHECK: call {{.*}}dtor |
| 196 | // CHECK: call {{.*}}dtor |
| 197 | // CHECK: } |
| 198 | } |
| 199 | |
| 200 | // -- a comma expression |
| 201 | // CHECK-LABEL: comma |
| 202 | void comma() { |
| 203 | // CHECK: call {{.*}}ctor |
| 204 | auto &&x = (true, (dtor&&)ctor()); |
| 205 | // CHECK: call {{.*}}then |
| 206 | then(); |
| 207 | // CHECK: call {{.*}}dtor |
| 208 | // CHECK: } |
| 209 | } |
| 210 | |
| 211 | |
| 212 | // This applies recursively: if an object is lifetime-extended and contains a |
| 213 | // reference, the referent is also extended. |
| 214 | // CHECK-LABEL: init_capture_ref |
| 215 | void init_capture_ref() { |
| 216 | // CHECK: call {{.*}}ctor |
| 217 | auto x = [&a = (const dtor&)ctor()] {}; |
| 218 | // CHECK: call {{.*}}then |
| 219 | then(); |
| 220 | // CHECK: call {{.*}}dtor |
| 221 | // CHECK: } |
| 222 | } |
| 223 | // CHECK-LABEL: init_capture_ref_indirect |
| 224 | void init_capture_ref_indirect() { |
| 225 | // CHECK: call {{.*}}ctor |
| 226 | auto x = [&a = (const dtor&)ctor()] {}; |
| 227 | // CHECK: call {{.*}}then |
| 228 | then(); |
| 229 | // CHECK: call {{.*}}dtor |
| 230 | // CHECK: } |
| 231 | } |
| 232 | // CHECK-LABEL: init_capture_init_list |
| 233 | void init_capture_init_list() { |
| 234 | // CHECK: call {{.*}}ctor |
| 235 | auto x = [a = {ctor()}] {}; |
| 236 | // CHECK: call {{.*}}then |
| 237 | then(); |
| 238 | // CHECK: call {{.*}}dtor |
| 239 | // CHECK: } |
| 240 | } |
| 241 | |