| 1 | // RUN: %clang_cc1 -std=c++98 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 2 | // RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 3 | // RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 4 | // RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 5 | // RUN: %clang_cc1 -std=c++2a -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 6 | |
| 7 | #if __cplusplus < 201103L |
| 8 | // expected-error@+1 {{variadic macro}} |
| 9 | #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__) |
| 10 | #endif |
| 11 | |
| 12 | #if __cplusplus >= 201103L |
| 13 | namespace std { |
| 14 | typedef decltype(sizeof(int)) size_t; |
| 15 | |
| 16 | template<typename E> class initializer_list { |
| 17 | const E *begin; |
| 18 | size_t size; |
| 19 | |
| 20 | public: |
| 21 | initializer_list(); |
| 22 | }; |
| 23 | } // std |
| 24 | #endif |
| 25 | |
| 26 | namespace dr1611 { // dr1611: dup 1658 |
| 27 | struct A { A(int); }; |
| 28 | struct B : virtual A { virtual void f() = 0; }; |
| 29 | struct C : B { C() : A(0) {} void f(); }; |
| 30 | C c; |
| 31 | } |
| 32 | |
| 33 | namespace dr1684 { // dr1684: 3.6 |
| 34 | #if __cplusplus >= 201103L |
| 35 | struct NonLiteral { // expected-note {{because}} |
| 36 | NonLiteral(); |
| 37 | constexpr int f() { return 0; } // expected-warning 0-1{{will not be implicitly 'const'}} |
| 38 | }; |
| 39 | constexpr int f(NonLiteral &) { return 0; } |
| 40 | constexpr int f(NonLiteral) { return 0; } // expected-error {{not a literal type}} |
| 41 | #endif |
| 42 | } |
| 43 | |
| 44 | namespace dr1631 { // dr1631: 3.7 |
| 45 | #if __cplusplus >= 201103L |
| 46 | // Incorrect overload resolution for single-element initializer-list |
| 47 | |
| 48 | struct A { int a[1]; }; |
| 49 | struct B { B(int); }; |
| 50 | void f(B, int); |
| 51 | void f(B, int, int = 0); |
| 52 | void f(int, A); |
| 53 | |
| 54 | void test() { |
| 55 | f({0}, {{1}}); // expected-warning {{braces around scalar init}} |
| 56 | } |
| 57 | |
| 58 | namespace with_error { |
| 59 | void f(B, int); // TODO: expected- note {{candidate function}} |
| 60 | void f(int, A); // expected-note {{candidate function}} |
| 61 | void f(int, A, int = 0); // expected-note {{candidate function}} |
| 62 | |
| 63 | void test() { |
| 64 | f({0}, {{1}}); // expected-error{{call to 'f' is ambiguous}} |
| 65 | } |
| 66 | } |
| 67 | #endif |
| 68 | } |
| 69 | |
| 70 | namespace dr1638 { // dr1638: yes |
| 71 | #if __cplusplus >= 201103L |
| 72 | template<typename T> struct A { |
| 73 | enum class E; // expected-note {{previous}} |
| 74 | enum class F : T; // expected-note 2{{previous}} |
| 75 | }; |
| 76 | |
| 77 | template<> enum class A<int>::E; |
| 78 | template<> enum class A<int>::E {}; |
| 79 | template<> enum class A<int>::F : int; |
| 80 | template<> enum class A<int>::F : int {}; |
| 81 | |
| 82 | template<> enum class A<short>::E : int; |
| 83 | template<> enum class A<short>::E : int {}; |
| 84 | |
| 85 | template<> enum class A<short>::F; // expected-error {{different underlying type}} |
| 86 | template<> enum class A<char>::E : char; // expected-error {{different underlying type}} |
| 87 | template<> enum class A<char>::F : int; // expected-error {{different underlying type}} |
| 88 | |
| 89 | enum class A<unsigned>::E; // expected-error {{template specialization requires 'template<>'}} expected-error {{nested name specifier}} |
| 90 | template enum class A<unsigned>::E; // expected-error {{enumerations cannot be explicitly instantiated}} |
| 91 | enum class A<unsigned>::E *e; // expected-error {{must use 'enum' not 'enum class'}} |
| 92 | |
| 93 | struct B { |
| 94 | friend enum class A<unsigned>::E; // expected-error {{must use 'enum' not 'enum class'}} |
| 95 | }; |
| 96 | #endif |
| 97 | } |
| 98 | |
| 99 | namespace dr1645 { // dr1645: 3.9 |
| 100 | #if __cplusplus >= 201103L |
| 101 | struct A { |
| 102 | constexpr A(int, float = 0); // expected-note 2{{candidate}} |
| 103 | explicit A(int, int = 0); // expected-note 2{{candidate}} |
| 104 | A(int, int, int = 0) = delete; // expected-note {{candidate}} |
| 105 | }; |
| 106 | |
| 107 | struct B : A { // expected-note 2{{candidate}} |
| 108 | using A::A; // expected-note 5{{inherited here}} |
| 109 | }; |
| 110 | |
| 111 | constexpr B a(0); // expected-error {{ambiguous}} |
| 112 | constexpr B b(0, 0); // expected-error {{ambiguous}} |
| 113 | #endif |
| 114 | } |
| 115 | |
| 116 | namespace dr1653 { // dr1653: 4 c++17 |
| 117 | void f(bool b) { |
| 118 | ++b; |
| 119 | b++; |
| 120 | #if __cplusplus <= 201402L |
| 121 | // expected-warning@-3 {{deprecated}} expected-warning@-2 {{deprecated}} |
| 122 | #else |
| 123 | // expected-error@-5 {{incrementing expression of type bool}} expected-error@-4 {{incrementing expression of type bool}} |
| 124 | #endif |
| 125 | --b; // expected-error {{cannot decrement expression of type bool}} |
| 126 | b--; // expected-error {{cannot decrement expression of type bool}} |
| 127 | b += 1; // ok |
| 128 | b -= 1; // ok |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | namespace dr1658 { // dr1658: 5 |
| 133 | namespace DefCtor { |
| 134 | class A { A(); }; // expected-note 0-2{{here}} |
| 135 | class B { ~B(); }; // expected-note 0-2{{here}} |
| 136 | |
| 137 | // The stars align! An abstract class does not construct its virtual bases. |
| 138 | struct C : virtual A { C(); virtual void foo() = 0; }; |
| 139 | C::C() = default; // ok, not deleted, expected-error 0-1{{extension}} |
| 140 | struct D : virtual B { D(); virtual void foo() = 0; }; |
| 141 | D::D() = default; // ok, not deleted, expected-error 0-1{{extension}} |
| 142 | |
| 143 | // In all other cases, we are not so lucky. |
| 144 | struct E : A { E(); virtual void foo() = 0; }; |
| 145 | #if __cplusplus < 201103L |
| 146 | E::E() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}} |
| 147 | #else |
| 148 | E::E() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}} |
| 149 | #endif |
| 150 | struct F : virtual A { F(); }; |
| 151 | #if __cplusplus < 201103L |
| 152 | F::F() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}} |
| 153 | #else |
| 154 | F::F() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}} |
| 155 | #endif |
| 156 | |
| 157 | struct G : B { G(); virtual void foo() = 0; }; |
| 158 | #if __cplusplus < 201103L |
| 159 | G::G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| 160 | #else |
| 161 | G::G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| 162 | #endif |
| 163 | struct H : virtual B { H(); }; |
| 164 | #if __cplusplus < 201103L |
| 165 | H::H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| 166 | #else |
| 167 | H::H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| 168 | #endif |
| 169 | } |
| 170 | |
| 171 | namespace Dtor { |
| 172 | class B { ~B(); }; // expected-note 0-2{{here}} |
| 173 | |
| 174 | struct D : virtual B { ~D(); virtual void foo() = 0; }; |
| 175 | D::~D() = default; // ok, not deleted, expected-error 0-1{{extension}} |
| 176 | |
| 177 | struct G : B { ~G(); virtual void foo() = 0; }; |
| 178 | #if __cplusplus < 201103L |
| 179 | G::~G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| 180 | #else |
| 181 | G::~G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| 182 | #endif |
| 183 | struct H : virtual B { ~H(); }; |
| 184 | #if __cplusplus < 201103L |
| 185 | H::~H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| 186 | #else |
| 187 | H::~H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| 188 | #endif |
| 189 | } |
| 190 | |
| 191 | namespace MemInit { |
| 192 | struct A { A(int); }; // expected-note {{here}} |
| 193 | struct B : virtual A { |
| 194 | B() {} |
| 195 | virtual void f() = 0; |
| 196 | }; |
| 197 | struct C : virtual A { |
| 198 | C() {} // expected-error {{must explicitly initialize}} |
| 199 | }; |
| 200 | } |
| 201 | |
| 202 | namespace CopyCtorParamType { |
| 203 | struct A { A(A&); }; |
| 204 | struct B : virtual A { virtual void f() = 0; }; |
| 205 | struct C : virtual A { virtual void f(); }; |
| 206 | struct D : A { virtual void f() = 0; }; |
| 207 | |
| 208 | struct X { |
| 209 | friend B::B(const B&) throw(); |
| 210 | friend C::C(C&); |
| 211 | friend D::D(D&); |
| 212 | }; |
| 213 | } |
| 214 | |
| 215 | namespace CopyCtor { |
| 216 | class A { A(const A&); A(A&&); }; // expected-note 0-4{{here}} expected-error 0-1{{extension}} |
| 217 | |
| 218 | struct C : virtual A { C(const C&); C(C&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}} |
| 219 | C::C(const C&) = default; // expected-error 0-1{{extension}} |
| 220 | C::C(C&&) = default; // expected-error 0-2{{extension}} |
| 221 | |
| 222 | struct E : A { E(const E&); E(E&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}} |
| 223 | #if __cplusplus < 201103L |
| 224 | E::E(const E&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}} |
| 225 | E::E(E&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}} |
| 226 | #else |
| 227 | E::E(const E&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}} |
| 228 | E::E(E&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}} |
| 229 | #endif |
| 230 | struct F : virtual A { F(const F&); F(F&&); }; // expected-error 0-1{{extension}} |
| 231 | #if __cplusplus < 201103L |
| 232 | F::F(const F&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}} |
| 233 | F::F(F&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}} |
| 234 | #else |
| 235 | F::F(const F&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}} |
| 236 | F::F(F&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}} |
| 237 | #endif |
| 238 | } |
| 239 | |
| 240 | // assignment case is superseded by dr2180 |
| 241 | } |
| 242 | |
| 243 | namespace dr1672 { // dr1672: 7 |
| 244 | struct Empty {}; |
| 245 | struct A : Empty {}; |
| 246 | struct B { Empty e; }; |
| 247 | struct C : A { B b; int n; }; |
| 248 | struct D : A { int n; B b; }; |
| 249 | |
| 250 | static_assert(!__is_standard_layout(C), ""); |
| 251 | static_assert(__is_standard_layout(D), ""); |
| 252 | |
| 253 | struct E { B b; int n; }; |
| 254 | struct F { int n; B b; }; |
| 255 | union G { B b; int n; }; |
| 256 | union H { int n; B b; }; |
| 257 | |
| 258 | struct X {}; |
| 259 | template<typename T> struct Y : X, A { T t; }; |
| 260 | |
| 261 | static_assert(!__is_standard_layout(Y<E>), ""); |
| 262 | static_assert(__is_standard_layout(Y<F>), ""); |
| 263 | static_assert(!__is_standard_layout(Y<G>), ""); |
| 264 | static_assert(!__is_standard_layout(Y<H>), ""); |
| 265 | static_assert(!__is_standard_layout(Y<X>), ""); |
| 266 | } |
| 267 | |
| 268 | namespace dr1687 { // dr1687: 7 |
| 269 | template<typename T> struct To { |
| 270 | operator T(); // expected-note 2{{first operand was implicitly converted to type 'int *'}} |
| 271 | // expected-note@-1 {{second operand was implicitly converted to type 'double'}} |
| 272 | #if __cplusplus > 201703L |
| 273 | // expected-note@-3 2{{operand was implicitly converted to type 'dr1687::E}} |
| 274 | #endif |
| 275 | }; |
| 276 | |
| 277 | int *a = To<int*>() + 100.0; // expected-error {{invalid operands to binary expression ('To<int *>' and 'double')}} |
| 278 | int *b = To<int*>() + To<double>(); // expected-error {{invalid operands to binary expression ('To<int *>' and 'To<double>')}} |
| 279 | |
| 280 | #if __cplusplus > 201703L |
| 281 | enum E1 {}; |
| 282 | enum E2 {}; |
| 283 | auto c = To<E1>() <=> To<E2>(); // expected-error {{invalid operands to binary expression ('To<dr1687::E1>' and 'To<dr1687::E2>')}} |
| 284 | #endif |
| 285 | } |
| 286 | |
| 287 | namespace dr1696 { // dr1696: 7 |
| 288 | namespace std_examples { |
| 289 | #if __cplusplus >= 201402L |
| 290 | extern struct A a; |
| 291 | struct A { |
| 292 | const A &x = { A{a, a} }; |
| 293 | const A &y = { A{} }; // expected-error {{default member initializer for 'y' needed within definition of enclosing class 'A' outside of member functions}} expected-note {{here}} |
| 294 | }; |
| 295 | A a{a, a}; |
| 296 | #endif |
| 297 | } |
| 298 | |
| 299 | struct A { A(); ~A(); }; |
| 300 | #if __cplusplus >= 201103L |
| 301 | struct B { |
| 302 | A &&a; // expected-note {{declared here}} |
| 303 | B() : a{} {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}} |
| 304 | } b; |
| 305 | #endif |
| 306 | |
| 307 | struct C { |
| 308 | C(); |
| 309 | const A &a; // expected-note {{declared here}} |
| 310 | }; |
| 311 | C::C() : a(A()) {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}} |
| 312 | |
| 313 | #if __cplusplus >= 201103L |
| 314 | // This is OK in C++14 onwards, per DR1815, though we don't support that yet: |
| 315 | // D1 d1 = {}; |
| 316 | // is equivalent to |
| 317 | // D1 d1 = {A()}; |
| 318 | // ... which lifetime-extends the A temporary. |
| 319 | struct D1 { |
| 320 | #if __cplusplus < 201402L |
| 321 | // expected-error@-2 {{binds to a temporary}} |
| 322 | #endif |
| 323 | const A &a = A(); // expected-note {{default member init}} |
| 324 | }; |
| 325 | D1 d1 = {}; |
| 326 | #if __cplusplus < 201402L |
| 327 | // expected-note@-2 {{first required here}} |
| 328 | #else |
| 329 | // expected-warning-re@-4 {{sorry, lifetime extension {{.*}} not supported}} |
| 330 | #endif |
| 331 | |
| 332 | struct D2 { |
| 333 | const A &a = A(); // expected-note {{default member init}} |
| 334 | D2() {} // expected-error {{binds to a temporary}} |
| 335 | }; |
| 336 | |
| 337 | struct D3 { // expected-error {{binds to a temporary}} |
| 338 | const A &a = A(); // expected-note {{default member init}} |
| 339 | }; |
| 340 | D3 d3; // expected-note {{first required here}} |
| 341 | |
| 342 | struct haslist1 { |
| 343 | std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}} |
| 344 | haslist1(int i) : il{i, 2, 3} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| 345 | }; |
| 346 | |
| 347 | struct haslist2 { |
| 348 | std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}} |
| 349 | haslist2(); |
| 350 | }; |
| 351 | haslist2::haslist2() : il{1, 2} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| 352 | |
| 353 | struct haslist3 { |
| 354 | std::initializer_list<int> il = {1, 2, 3}; |
| 355 | }; |
| 356 | |
| 357 | struct haslist4 { // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| 358 | std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}} |
| 359 | }; |
| 360 | haslist4 hl4; // expected-note {{in implicit default constructor}} |
| 361 | |
| 362 | struct haslist5 { |
| 363 | std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}} |
| 364 | haslist5() {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| 365 | }; |
| 366 | #endif |
| 367 | } |
| 368 | |