| 1 | // RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 2 | // RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 3 | // RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 4 | // RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| 5 | |
| 6 | // PR13819 -- __SIZE_TYPE__ is incompatible. |
| 7 | typedef __SIZE_TYPE__ size_t; // expected-error 0-1 {{extension}} |
| 8 | |
| 9 | #if __cplusplus < 201103L |
| 10 | #define fold(x) (__builtin_constant_p(x) ? (x) : (x)) |
| 11 | #else |
| 12 | #define fold |
| 13 | #endif |
| 14 | |
| 15 | namespace dr200 { // dr200: dup 214 |
| 16 | template <class T> T f(int); |
| 17 | template <class T, class U> T f(U) = delete; // expected-error 0-1{{extension}} |
| 18 | |
| 19 | void g() { |
| 20 | f<int>(1); |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | // dr201 FIXME: write codegen test |
| 25 | |
| 26 | namespace dr202 { // dr202: yes |
| 27 | template<typename T> T f(); |
| 28 | template<int (*g)()> struct X { |
| 29 | int arr[fold(g == &f<int>) ? 1 : -1]; |
| 30 | }; |
| 31 | template struct X<f>; |
| 32 | } |
| 33 | |
| 34 | // FIXME (export) dr204: no |
| 35 | |
| 36 | namespace dr206 { // dr206: yes |
| 37 | struct S; // expected-note 2{{declaration}} |
| 38 | template<typename T> struct Q { S s; }; // expected-error {{incomplete}} |
| 39 | template<typename T> void f() { S s; } // expected-error {{incomplete}} |
| 40 | } |
| 41 | |
| 42 | namespace dr207 { // dr207: yes |
| 43 | class A { |
| 44 | protected: |
| 45 | static void f() {} |
| 46 | }; |
| 47 | class B : A { |
| 48 | public: |
| 49 | using A::f; |
| 50 | void g() { |
| 51 | A::f(); |
| 52 | f(); |
| 53 | } |
| 54 | }; |
| 55 | } |
| 56 | |
| 57 | // dr208 FIXME: write codegen test |
| 58 | |
| 59 | namespace dr209 { // dr209: yes |
| 60 | class A { |
| 61 | void f(); // expected-note {{here}} |
| 62 | }; |
| 63 | class B { |
| 64 | friend void A::f(); // expected-error {{private}} |
| 65 | }; |
| 66 | } |
| 67 | |
| 68 | // dr210 FIXME: write codegen test |
| 69 | |
| 70 | namespace dr211 { // dr211: yes |
| 71 | struct A { |
| 72 | A() try { |
| 73 | throw 0; |
| 74 | } catch (...) { |
| 75 | return; // expected-error {{return in the catch of a function try block of a constructor}} |
| 76 | } |
| 77 | }; |
| 78 | } |
| 79 | |
| 80 | namespace dr213 { // dr213: yes |
| 81 | template <class T> struct A : T { |
| 82 | void h(T t) { |
| 83 | char &r1 = f(t); |
| 84 | int &r2 = g(t); // expected-error {{undeclared}} |
| 85 | } |
| 86 | }; |
| 87 | struct B { |
| 88 | int &f(B); |
| 89 | int &g(B); // expected-note {{in dependent base class}} |
| 90 | }; |
| 91 | char &f(B); |
| 92 | |
| 93 | template void A<B>::h(B); // expected-note {{instantiation}} |
| 94 | } |
| 95 | |
| 96 | namespace dr214 { // dr214: yes |
| 97 | template<typename T, typename U> T checked_cast(U from) { U::error; } |
| 98 | template<typename T, typename U> T checked_cast(U *from); |
| 99 | class C {}; |
| 100 | void foo(int *arg) { checked_cast<const C *>(arg); } |
| 101 | |
| 102 | template<typename T> T f(int); |
| 103 | template<typename T, typename U> T f(U) { T::error; } |
| 104 | void g() { |
| 105 | f<int>(1); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | namespace dr215 { // dr215: yes |
| 110 | template<typename T> class X { |
| 111 | friend void T::foo(); |
| 112 | int n; |
| 113 | }; |
| 114 | struct Y { |
| 115 | void foo() { (void)+X<Y>().n; } |
| 116 | }; |
| 117 | } |
| 118 | |
| 119 | namespace dr216 { // dr216: no |
| 120 | // FIXME: Should reject this: 'f' has linkage but its type does not, |
| 121 | // and 'f' is odr-used but not defined in this TU. |
| 122 | typedef enum { e } *E; |
| 123 | void f(E); |
| 124 | void g(E e) { f(e); } |
| 125 | |
| 126 | struct S { |
| 127 | // FIXME: Should reject this: 'f' has linkage but its type does not, |
| 128 | // and 'f' is odr-used but not defined in this TU. |
| 129 | typedef enum { e } *E; |
| 130 | void f(E); |
| 131 | }; |
| 132 | void g(S s, S::E e) { s.f(e); } |
| 133 | } |
| 134 | |
| 135 | namespace dr217 { // dr217: yes |
| 136 | template<typename T> struct S { |
| 137 | void f(int); |
| 138 | }; |
| 139 | template<typename T> void S<T>::f(int = 0) {} // expected-error {{default arguments cannot be added}} |
| 140 | } |
| 141 | |
| 142 | namespace dr218 { // dr218: yes |
| 143 | namespace A { |
| 144 | struct S {}; |
| 145 | void f(S); |
| 146 | } |
| 147 | namespace B { |
| 148 | struct S {}; |
| 149 | void f(S); |
| 150 | } |
| 151 | |
| 152 | struct C { |
| 153 | int f; |
| 154 | void test1(A::S as) { f(as); } // expected-error {{called object type 'int'}} |
| 155 | void test2(A::S as) { void f(); f(as); } // expected-error {{too many arguments}} expected-note {{}} |
| 156 | void test3(A::S as) { using A::f; f(as); } // ok |
| 157 | void test4(A::S as) { using B::f; f(as); } // ok |
| 158 | void test5(A::S as) { int f; f(as); } // expected-error {{called object type 'int'}} |
| 159 | void test6(A::S as) { struct f {}; (void) f(as); } // expected-error {{no matching conversion}} expected-note +{{}} |
| 160 | }; |
| 161 | |
| 162 | namespace D { |
| 163 | struct S {}; |
| 164 | struct X { void operator()(S); } f; |
| 165 | } |
| 166 | void testD(D::S ds) { f(ds); } // expected-error {{undeclared identifier}} |
| 167 | |
| 168 | namespace E { |
| 169 | struct S {}; |
| 170 | struct f { f(S); }; |
| 171 | } |
| 172 | void testE(E::S es) { f(es); } // expected-error {{undeclared identifier}} |
| 173 | |
| 174 | namespace F { |
| 175 | struct S { |
| 176 | template<typename T> friend void f(S, T) {} |
| 177 | }; |
| 178 | } |
| 179 | void testF(F::S fs) { f(fs, 0); } |
| 180 | |
| 181 | namespace G { |
| 182 | namespace X { |
| 183 | int f; |
| 184 | struct A {}; |
| 185 | } |
| 186 | namespace Y { |
| 187 | template<typename T> void f(T); |
| 188 | struct B {}; |
| 189 | } |
| 190 | template<typename A, typename B> struct C {}; |
| 191 | } |
| 192 | void testG(G::C<G::X::A, G::Y::B> gc) { f(gc); } |
| 193 | } |
| 194 | |
| 195 | // dr219: na |
| 196 | // dr220: na |
| 197 | |
| 198 | namespace dr221 { // dr221: yes |
| 199 | struct A { // expected-note 2-4{{candidate}} |
| 200 | A &operator=(int&); // expected-note 2{{candidate}} |
| 201 | A &operator+=(int&); |
| 202 | static A &operator=(A&, double&); // expected-error {{cannot be a static member}} |
| 203 | static A &operator+=(A&, double&); // expected-error {{cannot be a static member}} |
| 204 | friend A &operator=(A&, char&); // expected-error {{must be a non-static member function}} |
| 205 | friend A &operator+=(A&, char&); |
| 206 | }; |
| 207 | A &operator=(A&, float&); // expected-error {{must be a non-static member function}} |
| 208 | A &operator+=(A&, float&); |
| 209 | |
| 210 | void test(A a, int n, char c, float f) { |
| 211 | a = n; |
| 212 | a += n; |
| 213 | a = c; // expected-error {{no viable}} |
| 214 | a += c; |
| 215 | a = f; // expected-error {{no viable}} |
| 216 | a += f; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | namespace dr222 { // dr222: dup 637 |
| 221 | void f(int a, int b, int c, int *x) { |
| 222 | #pragma clang diagnostic push |
| 223 | #pragma clang diagnostic warning "-Wunsequenced" |
| 224 | void((a += b) += c); |
| 225 | void((a += b) + (a += c)); // expected-warning {{multiple unsequenced modifications to 'a'}} |
| 226 | |
| 227 | x[a++] = a; // expected-warning {{unsequenced modification and access to 'a'}} |
| 228 | |
| 229 | a = b = 0; // ok, read and write of 'b' are sequenced |
| 230 | |
| 231 | a = (b = a++); // expected-warning {{multiple unsequenced modifications to 'a'}} |
| 232 | a = (b = ++a); |
| 233 | #pragma clang diagnostic pop |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | // dr223: na |
| 238 | |
| 239 | namespace dr224 { // dr224: no |
| 240 | namespace example1 { |
| 241 | template <class T> class A { |
| 242 | typedef int type; |
| 243 | A::type a; |
| 244 | A<T>::type b; |
| 245 | A<T*>::type c; // expected-error {{missing 'typename'}} |
| 246 | ::dr224::example1::A<T>::type d; |
| 247 | |
| 248 | class B { |
| 249 | typedef int type; |
| 250 | |
| 251 | A::type a; |
| 252 | A<T>::type b; |
| 253 | A<T*>::type c; // expected-error {{missing 'typename'}} |
| 254 | ::dr224::example1::A<T>::type d; |
| 255 | |
| 256 | B::type e; |
| 257 | A<T>::B::type f; |
| 258 | A<T*>::B::type g; // expected-error {{missing 'typename'}} |
| 259 | typename A<T*>::B::type h; |
| 260 | }; |
| 261 | }; |
| 262 | |
| 263 | template <class T> class A<T*> { |
| 264 | typedef int type; |
| 265 | A<T*>::type a; |
| 266 | A<T>::type b; // expected-error {{missing 'typename'}} |
| 267 | }; |
| 268 | |
| 269 | template <class T1, class T2, int I> struct B { |
| 270 | typedef int type; |
| 271 | B<T1, T2, I>::type b1; |
| 272 | B<T2, T1, I>::type b2; // expected-error {{missing 'typename'}} |
| 273 | |
| 274 | typedef T1 my_T1; |
| 275 | static const int my_I = I; |
| 276 | static const int my_I2 = I+0; |
| 277 | static const int my_I3 = my_I; |
| 278 | B<my_T1, T2, my_I>::type b3; // FIXME: expected-error {{missing 'typename'}} |
| 279 | B<my_T1, T2, my_I2>::type b4; // expected-error {{missing 'typename'}} |
| 280 | B<my_T1, T2, my_I3>::type b5; // FIXME: expected-error {{missing 'typename'}} |
| 281 | }; |
| 282 | } |
| 283 | |
| 284 | namespace example2 { |
| 285 | template <int, typename T> struct X { typedef T type; }; |
| 286 | template <class T> class A { |
| 287 | static const int i = 5; |
| 288 | X<i, int>::type w; // FIXME: expected-error {{missing 'typename'}} |
| 289 | X<A::i, char>::type x; // FIXME: expected-error {{missing 'typename'}} |
| 290 | X<A<T>::i, double>::type y; // FIXME: expected-error {{missing 'typename'}} |
| 291 | X<A<T*>::i, long>::type z; // expected-error {{missing 'typename'}} |
| 292 | int f(); |
| 293 | }; |
| 294 | template <class T> int A<T>::f() { |
| 295 | return i; |
| 296 | } |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | // dr225: yes |
| 301 | template<typename T> void dr225_f(T t) { dr225_g(t); } // expected-error {{call to function 'dr225_g' that is neither visible in the template definition nor found by argument-dependent lookup}} |
| 302 | void dr225_g(int); // expected-note {{should be declared prior to the call site}} |
| 303 | template void dr225_f(int); // expected-note {{in instantiation of}} |
| 304 | |
| 305 | namespace dr226 { // dr226: no |
| 306 | template<typename T = void> void f() {} |
| 307 | #if __cplusplus < 201103L |
| 308 | // expected-error@-2 {{extension}} |
| 309 | // FIXME: This appears to be wrong: default arguments for function templates |
| 310 | // are listed as a defect (in c++98) not an extension. EDG accepts them in |
| 311 | // strict c++98 mode. |
| 312 | #endif |
| 313 | template<typename T> struct S { |
| 314 | template<typename U = void> void g(); |
| 315 | #if __cplusplus < 201103L |
| 316 | // expected-error@-2 {{extension}} |
| 317 | #endif |
| 318 | template<typename U> struct X; |
| 319 | template<typename U> void h(); |
| 320 | }; |
| 321 | template<typename T> template<typename U> void S<T>::g() {} |
| 322 | template<typename T> template<typename U = void> struct S<T>::X {}; // expected-error {{cannot add a default template arg}} |
| 323 | template<typename T> template<typename U = void> void S<T>::h() {} // expected-error {{cannot add a default template arg}} |
| 324 | |
| 325 | template<typename> void friend_h(); |
| 326 | struct A { |
| 327 | // FIXME: This is ill-formed. |
| 328 | template<typename=void> struct friend_B; |
| 329 | // FIXME: f, h, and i are ill-formed. |
| 330 | // f is ill-formed because it is not a definition. |
| 331 | // h and i are ill-formed because they are not the only declarations of the |
| 332 | // function in the translation unit. |
| 333 | template<typename=void> void friend_f(); |
| 334 | template<typename=void> void friend_g() {} |
| 335 | template<typename=void> void friend_h() {} |
| 336 | template<typename=void> void friend_i() {} |
| 337 | #if __cplusplus < 201103L |
| 338 | // expected-error@-5 {{extension}} expected-error@-4 {{extension}} |
| 339 | // expected-error@-4 {{extension}} expected-error@-3 {{extension}} |
| 340 | #endif |
| 341 | }; |
| 342 | template<typename> void friend_i(); |
| 343 | |
| 344 | template<typename=void, typename X> void foo(X) {} |
| 345 | template<typename=void, typename X> struct Foo {}; // expected-error {{missing a default argument}} expected-note {{here}} |
| 346 | #if __cplusplus < 201103L |
| 347 | // expected-error@-3 {{extension}} |
| 348 | #endif |
| 349 | |
| 350 | template<typename=void, typename X, typename, typename Y> int foo(X, Y); |
| 351 | template<typename, typename X, typename=void, typename Y> int foo(X, Y); |
| 352 | int x = foo(0, 0); |
| 353 | #if __cplusplus < 201103L |
| 354 | // expected-error@-4 {{extension}} |
| 355 | // expected-error@-4 {{extension}} |
| 356 | #endif |
| 357 | } |
| 358 | |
| 359 | void dr227(bool b) { // dr227: yes |
| 360 | if (b) |
| 361 | int n; |
| 362 | else |
| 363 | int n; |
| 364 | } |
| 365 | |
| 366 | namespace dr228 { // dr228: yes |
| 367 | template <class T> struct X { |
| 368 | void f(); |
| 369 | }; |
| 370 | template <class T> struct Y { |
| 371 | void g(X<T> x) { x.template X<T>::f(); } |
| 372 | }; |
| 373 | } |
| 374 | |
| 375 | namespace dr229 { // dr229: yes |
| 376 | template<typename T> void f(); |
| 377 | template<typename T> void f<T*>() {} // expected-error {{function template partial specialization}} |
| 378 | template<> void f<int>() {} |
| 379 | } |
| 380 | |
| 381 | namespace dr230 { // dr230: yes |
| 382 | struct S { |
| 383 | S() { f(); } // expected-warning {{call to pure virtual member function}} |
| 384 | virtual void f() = 0; // expected-note {{declared here}} |
| 385 | }; |
| 386 | } |
| 387 | |
| 388 | namespace dr231 { // dr231: yes |
| 389 | namespace outer { |
| 390 | namespace inner { |
| 391 | int i; // expected-note {{here}} |
| 392 | } |
| 393 | void f() { using namespace inner; } |
| 394 | int j = i; // expected-error {{undeclared identifier 'i'; did you mean 'inner::i'?}} |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | // dr234: na |
| 399 | // dr235: na |
| 400 | |
| 401 | namespace dr236 { // dr236: yes |
| 402 | void *p = int(); |
| 403 | #if __cplusplus < 201103L |
| 404 | // expected-warning@-2 {{null pointer}} |
| 405 | #else |
| 406 | // expected-error@-4 {{cannot initialize}} |
| 407 | #endif |
| 408 | } |
| 409 | |
| 410 | namespace dr237 { // dr237: dup 470 |
| 411 | template<typename T> struct A { void f() { T::error; } }; |
| 412 | template<typename T> struct B : A<T> {}; |
| 413 | template struct B<int>; // ok |
| 414 | } |
| 415 | |
| 416 | namespace dr239 { // dr239: yes |
| 417 | namespace NS { |
| 418 | class T {}; |
| 419 | void f(T); |
| 420 | float &g(T, int); |
| 421 | } |
| 422 | NS::T parm; |
| 423 | int &g(NS::T, float); |
| 424 | int main() { |
| 425 | f(parm); |
| 426 | float &r = g(parm, 1); |
| 427 | extern int &g(NS::T, float); |
| 428 | int &s = g(parm, 1); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | // dr240: dup 616 |
| 433 | |
| 434 | namespace dr241 { // dr241: yes |
| 435 | namespace A { |
| 436 | struct B {}; |
| 437 | template <int X> void f(); // expected-note 2{{candidate}} |
| 438 | template <int X> void g(B); |
| 439 | } |
| 440 | namespace C { |
| 441 | template <class T> void f(T t); // expected-note 2{{candidate}} |
| 442 | template <class T> void g(T t); // expected-note {{candidate}} |
| 443 | } |
| 444 | void h(A::B b) { |
| 445 | f<3>(b); // expected-error {{undeclared identifier}} |
| 446 | g<3>(b); // expected-error {{undeclared identifier}} |
| 447 | A::f<3>(b); // expected-error {{no matching}} |
| 448 | A::g<3>(b); |
| 449 | C::f<3>(b); // expected-error {{no matching}} |
| 450 | C::g<3>(b); // expected-error {{no matching}} |
| 451 | using C::f; |
| 452 | using C::g; |
| 453 | f<3>(b); // expected-error {{no matching}} |
| 454 | g<3>(b); |
| 455 | } |
| 456 | } |
| 457 | |
| 458 | namespace dr243 { // dr243: yes |
| 459 | struct B; |
| 460 | struct A { |
| 461 | A(B); // expected-note {{candidate}} |
| 462 | }; |
| 463 | struct B { |
| 464 | operator A() = delete; // expected-error 0-1{{extension}} expected-note {{candidate}} |
| 465 | } b; |
| 466 | A a1(b); |
| 467 | A a2 = b; // expected-error {{ambiguous}} |
| 468 | } |
| 469 | |
| 470 | namespace dr244 { // dr244: partial |
| 471 | struct B {}; struct D : B {}; // expected-note {{here}} |
| 472 | |
| 473 | D D_object; |
| 474 | typedef B B_alias; |
| 475 | B* B_ptr = &D_object; |
| 476 | |
| 477 | void f() { |
| 478 | D_object.~B(); // expected-error {{expression does not match the type}} |
| 479 | D_object.B::~B(); |
| 480 | B_ptr->~B(); |
| 481 | B_ptr->~B_alias(); |
| 482 | B_ptr->B_alias::~B(); |
| 483 | // This is valid under DR244. |
| 484 | B_ptr->B_alias::~B_alias(); |
| 485 | B_ptr->dr244::~B(); // expected-error {{refers to a member in namespace}} |
| 486 | B_ptr->dr244::~B_alias(); // expected-error {{refers to a member in namespace}} |
| 487 | } |
| 488 | |
| 489 | namespace N { |
| 490 | template<typename T> struct E {}; |
| 491 | typedef E<int> F; |
| 492 | } |
| 493 | void g(N::F f) { |
| 494 | typedef N::F G; |
| 495 | f.~G(); |
| 496 | f.G::~E(); |
| 497 | f.G::~F(); // expected-error {{expected the class name after '~' to name a destructor}} |
| 498 | f.G::~G(); |
| 499 | // This is technically ill-formed; E is looked up in 'N::' and names the |
| 500 | // class template, not the injected-class-name of the class. But that's |
| 501 | // probably a bug in the standard. |
| 502 | f.N::F::~E(); |
| 503 | // This is valid; we look up the second F in the same scope in which we |
| 504 | // found the first one, that is, 'N::'. |
| 505 | f.N::F::~F(); // FIXME: expected-error {{expected the class name after '~' to name a destructor}} |
| 506 | // This is technically ill-formed; G is looked up in 'N::' and is not found; |
| 507 | // as above, this is probably a bug in the standard. |
| 508 | f.N::F::~G(); |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | namespace dr245 { // dr245: yes |
| 513 | struct S { |
| 514 | enum E {}; // expected-note {{here}} |
| 515 | class E *p; // expected-error {{does not match previous declaration}} |
| 516 | }; |
| 517 | } |
| 518 | |
| 519 | namespace dr246 { // dr246: yes |
| 520 | struct S { |
| 521 | S() try { // expected-note {{try block}} |
| 522 | throw 0; |
| 523 | X: ; |
| 524 | } catch (int) { |
| 525 | goto X; // expected-error {{cannot jump}} |
| 526 | } |
| 527 | }; |
| 528 | } |
| 529 | |
| 530 | namespace dr247 { // dr247: yes |
| 531 | struct A {}; |
| 532 | struct B : A { |
| 533 | void f(); |
| 534 | void f(int); |
| 535 | }; |
| 536 | void (A::*f)() = (void (A::*)())&B::f; |
| 537 | |
| 538 | struct C { |
| 539 | void f(); |
| 540 | void f(int); |
| 541 | }; |
| 542 | struct D : C {}; |
| 543 | void (C::*g)() = &D::f; |
| 544 | void (D::*h)() = &D::f; |
| 545 | |
| 546 | struct E { |
| 547 | void f(); |
| 548 | }; |
| 549 | struct F : E { |
| 550 | using E::f; |
| 551 | void f(int); |
| 552 | }; |
| 553 | void (F::*i)() = &F::f; |
| 554 | } |
| 555 | |
| 556 | namespace dr248 { // dr248: yes c++11 |
| 557 | // FIXME: Should this also apply to c++98 mode? This was a DR against C++98. |
| 558 | int \u040d\u040e = 0; |
| 559 | #if __cplusplus < 201103L |
| 560 | // FIXME: expected-error@-2 {{expected ';'}} |
| 561 | #endif |
| 562 | } |
| 563 | |
| 564 | namespace dr249 { // dr249: yes |
| 565 | template<typename T> struct X { void f(); }; |
| 566 | template<typename T> void X<T>::f() {} |
| 567 | } |
| 568 | |
| 569 | namespace dr250 { // dr250: yes |
| 570 | typedef void (*FPtr)(double x[]); |
| 571 | |
| 572 | template<int I> void f(double x[]); |
| 573 | FPtr fp = &f<3>; |
| 574 | |
| 575 | template<int I = 3> void g(double x[]); // expected-error 0-1{{extension}} |
| 576 | FPtr gp = &g<>; |
| 577 | } |
| 578 | |
| 579 | namespace dr252 { // dr252: yes |
| 580 | struct A { |
| 581 | void operator delete(void*); // expected-note {{found}} |
| 582 | }; |
| 583 | struct B { |
| 584 | void operator delete(void*); // expected-note {{found}} |
| 585 | }; |
| 586 | struct C : A, B { |
| 587 | virtual ~C(); |
| 588 | }; |
| 589 | C::~C() {} // expected-error {{'operator delete' found in multiple base classes}} |
| 590 | |
| 591 | struct D { |
| 592 | void operator delete(void*, int); // expected-note {{here}} |
| 593 | virtual ~D(); |
| 594 | }; |
| 595 | D::~D() {} // expected-error {{no suitable member 'operator delete'}} |
| 596 | |
| 597 | struct E { |
| 598 | void operator delete(void*, int); |
| 599 | void operator delete(void*) = delete; // expected-error 0-1{{extension}} expected-note 1-2 {{here}} |
| 600 | virtual ~E(); // expected-error 0-1 {{attempt to use a deleted function}} |
| 601 | }; |
| 602 | E::~E() {} // expected-error {{attempt to use a deleted function}} |
| 603 | |
| 604 | struct F { |
| 605 | // If both functions are available, the first one is a placement delete. |
| 606 | void operator delete(void*, size_t); |
| 607 | void operator delete(void*) = delete; // expected-error 0-1{{extension}} expected-note {{here}} |
| 608 | virtual ~F(); |
| 609 | }; |
| 610 | F::~F() {} // expected-error {{attempt to use a deleted function}} |
| 611 | |
| 612 | struct G { |
| 613 | void operator delete(void*, size_t); |
| 614 | virtual ~G(); |
| 615 | }; |
| 616 | G::~G() {} |
| 617 | } |
| 618 | |
| 619 | namespace dr254 { // dr254: yes |
| 620 | template<typename T> struct A { |
| 621 | typedef typename T::type type; // ok even if this is a typedef-name, because |
| 622 | // it's not an elaborated-type-specifier |
| 623 | typedef struct T::type foo; // expected-error {{typedef 'type' cannot be referenced with a struct specifier}} |
| 624 | }; |
| 625 | struct B { struct type {}; }; |
| 626 | struct C { typedef struct {} type; }; // expected-note {{here}} |
| 627 | A<B>::type n; |
| 628 | A<C>::type n; // expected-note {{instantiation of}} |
| 629 | } |
| 630 | |
| 631 | // dr256: dup 624 |
| 632 | |
| 633 | namespace dr257 { // dr257: yes |
| 634 | struct A { A(int); }; // expected-note {{here}} |
| 635 | struct B : virtual A { |
| 636 | B() {} |
| 637 | virtual void f() = 0; |
| 638 | }; |
| 639 | struct C : B { |
| 640 | C() {} |
| 641 | }; |
| 642 | struct D : B { |
| 643 | D() {} // expected-error {{must explicitly initialize the base class 'dr257::A'}} |
| 644 | void f(); |
| 645 | }; |
| 646 | } |
| 647 | |
| 648 | namespace dr258 { // dr258: yes |
| 649 | struct A { |
| 650 | void f(const int); |
| 651 | template<typename> void g(int); |
| 652 | float &h() const; |
| 653 | }; |
| 654 | struct B : A { |
| 655 | using A::f; |
| 656 | using A::g; |
| 657 | using A::h; |
| 658 | int &f(int); |
| 659 | template<int> int &g(int); // expected-note {{candidate}} |
| 660 | int &h(); |
| 661 | } b; |
| 662 | int &w = b.f(0); |
| 663 | int &x = b.g<int>(0); // expected-error {{no match}} |
| 664 | int &y = b.h(); |
| 665 | float &z = const_cast<const B&>(b).h(); |
| 666 | |
| 667 | struct C { |
| 668 | virtual void f(const int) = 0; |
| 669 | }; |
| 670 | struct D : C { |
| 671 | void f(int); |
| 672 | } d; |
| 673 | |
| 674 | struct E { |
| 675 | virtual void f() = 0; // expected-note {{unimplemented}} |
| 676 | }; |
| 677 | struct F : E { |
| 678 | void f() const {} |
| 679 | } f; // expected-error {{abstract}} |
| 680 | } |
| 681 | |
| 682 | namespace dr259 { // dr259: 4 |
| 683 | template<typename T> struct A {}; |
| 684 | template struct A<int>; // expected-note {{previous}} |
| 685 | template struct A<int>; // expected-error {{duplicate explicit instantiation}} |
| 686 | |
| 687 | template<> struct A<float>; // expected-note {{previous}} |
| 688 | template struct A<float>; // expected-warning {{has no effect}} |
| 689 | |
| 690 | template struct A<char>; // expected-note {{here}} |
| 691 | template<> struct A<char>; // expected-error {{explicit specialization of 'dr259::A<char>' after instantiation}} |
| 692 | |
| 693 | template<> struct A<double>; |
| 694 | template<> struct A<double>; |
| 695 | template<> struct A<double> {}; // expected-note {{here}} |
| 696 | template<> struct A<double> {}; // expected-error {{redefinition}} |
| 697 | |
| 698 | template<typename T> struct B; // expected-note {{here}} |
| 699 | template struct B<int>; // expected-error {{undefined}} |
| 700 | |
| 701 | template<> struct B<float>; // expected-note {{previous}} |
| 702 | template struct B<float>; // expected-warning {{has no effect}} |
| 703 | } |
| 704 | |
| 705 | // FIXME: When dr260 is resolved, also add tests for DR507. |
| 706 | |
| 707 | namespace dr261 { // dr261: no |
| 708 | #pragma clang diagnostic push |
| 709 | #pragma clang diagnostic warning "-Wused-but-marked-unused" |
| 710 | |
| 711 | // FIXME: This is ill-formed, with a diagnostic required, because operator new |
| 712 | // and operator delete are inline and odr-used, but not defined in this |
| 713 | // translation unit. |
| 714 | // We're also missing the -Wused-but-marked-unused diagnostic here. |
| 715 | struct A { |
| 716 | inline void *operator new(size_t) __attribute__((unused)); |
| 717 | inline void operator delete(void*) __attribute__((unused)); |
| 718 | A() {} |
| 719 | }; |
| 720 | |
| 721 | // FIXME: This is ill-formed, with a required diagnostic, for the same |
| 722 | // reason. |
| 723 | struct B { |
| 724 | inline void operator delete(void*) __attribute__((unused)); |
| 725 | ~B() {} |
| 726 | }; |
| 727 | struct C { |
| 728 | inline void operator delete(void*) __attribute__((unused)); |
| 729 | virtual ~C() {} // expected-warning {{'operator delete' was marked unused but was used}} |
| 730 | }; |
| 731 | |
| 732 | struct D { |
| 733 | inline void operator delete(void*) __attribute__((unused)); |
| 734 | }; |
| 735 | void h() { C::operator delete(0); } // expected-warning {{marked unused but was used}} |
| 736 | |
| 737 | #pragma clang diagnostic pop |
| 738 | } |
| 739 | |
| 740 | namespace dr262 { // dr262: yes |
| 741 | int f(int = 0, ...); |
| 742 | int k = f(); |
| 743 | int l = f(0); |
| 744 | int m = f(0, 0); |
| 745 | } |
| 746 | |
| 747 | namespace dr263 { // dr263: yes |
| 748 | struct X {}; |
| 749 | struct Y { |
| 750 | #if __cplusplus < 201103L |
| 751 | friend X::X() throw(); |
| 752 | friend X::~X() throw(); |
| 753 | #else |
| 754 | friend constexpr X::X() noexcept; |
| 755 | friend X::~X(); |
| 756 | #endif |
| 757 | Y::Y(); // expected-error {{extra qualification}} |
| 758 | Y::~Y(); // expected-error {{extra qualification}} |
| 759 | }; |
| 760 | } |
| 761 | |
| 762 | // dr265: dup 353 |
| 763 | // dr266: na |
| 764 | // dr269: na |
| 765 | // dr270: na |
| 766 | |
| 767 | namespace dr272 { // dr272: yes |
| 768 | struct X { |
| 769 | void f() { |
| 770 | this->~X(); |
| 771 | X::~X(); |
| 772 | ~X(); // expected-error {{unary expression}} |
| 773 | } |
| 774 | }; |
| 775 | } |
| 776 | |
| 777 | #include <stdarg.h> |
| 778 | #include <stddef.h> |
| 779 | namespace dr273 { // dr273: yes |
| 780 | struct A { |
| 781 | int n; |
| 782 | }; |
| 783 | void operator&(A); |
| 784 | void f(A a, ...) { |
| 785 | offsetof(A, n); |
| 786 | va_list val; |
| 787 | va_start(val, a); |
| 788 | va_end(val); |
| 789 | } |
| 790 | } |
| 791 | |
| 792 | // dr274: na |
| 793 | |
| 794 | namespace dr275 { // dr275: no |
| 795 | namespace N { |
| 796 | template <class T> void f(T) {} // expected-note 1-4{{here}} |
| 797 | template <class T> void g(T) {} // expected-note {{candidate}} |
| 798 | template <> void f(int); |
| 799 | template <> void f(char); |
| 800 | template <> void f(double); |
| 801 | template <> void g(char); |
| 802 | } |
| 803 | |
| 804 | using namespace N; |
| 805 | |
| 806 | namespace M { |
| 807 | template <> void N::f(char) {} // expected-error {{'M' does not enclose namespace 'N'}} |
| 808 | template <class T> void g(T) {} |
| 809 | template <> void g(char) {} |
| 810 | template void f(long); |
| 811 | #if __cplusplus >= 201103L |
| 812 | // FIXME: this should be rejected in c++98 too |
| 813 | // expected-error@-3 {{must occur in namespace 'N'}} |
| 814 | #endif |
| 815 | template void N::f(unsigned long); |
| 816 | #if __cplusplus >= 201103L |
| 817 | // FIXME: this should be rejected in c++98 too |
| 818 | // expected-error@-3 {{not in a namespace enclosing 'N'}} |
| 819 | #endif |
| 820 | template void h(long); // expected-error {{does not refer to a function template}} |
| 821 | template <> void f(double) {} // expected-error {{no function template matches}} |
| 822 | } |
| 823 | |
| 824 | template <class T> void g(T) {} // expected-note {{candidate}} |
| 825 | |
| 826 | template <> void N::f(char) {} |
| 827 | template <> void f(int) {} // expected-error {{no function template matches}} |
| 828 | |
| 829 | template void f(short); |
| 830 | #if __cplusplus >= 201103L |
| 831 | // FIXME: this should be rejected in c++98 too |
| 832 | // expected-error@-3 {{must occur in namespace 'N'}} |
| 833 | #endif |
| 834 | template void N::f(unsigned short); |
| 835 | |
| 836 | // FIXME: this should probably be valid. the wording from the issue |
| 837 | // doesn't clarify this, but it follows from the usual rules. |
| 838 | template void g(int); // expected-error {{ambiguous}} |
| 839 | |
| 840 | // FIXME: likewise, this should also be valid. |
| 841 | template<typename T> void f(T) {} // expected-note {{candidate}} |
| 842 | template void f(short); // expected-error {{ambiguous}} |
| 843 | } |
| 844 | |
| 845 | // dr276: na |
| 846 | |
| 847 | namespace dr277 { // dr277: yes |
| 848 | typedef int *intp; |
| 849 | int *p = intp(); |
| 850 | int a[fold(intp() ? -1 : 1)]; |
| 851 | } |
| 852 | |
| 853 | namespace dr280 { // dr280: yes |
| 854 | typedef void f0(); |
| 855 | typedef void f1(int); |
| 856 | typedef void f2(int, int); |
| 857 | typedef void f3(int, int, int); |
| 858 | struct A { |
| 859 | operator f1*(); // expected-note {{here}} expected-note {{candidate}} |
| 860 | operator f2*(); |
| 861 | }; |
| 862 | struct B { |
| 863 | operator f0*(); // expected-note {{candidate}} |
| 864 | private: |
| 865 | operator f3*(); // expected-note {{here}} expected-note {{candidate}} |
| 866 | }; |
| 867 | struct C { |
| 868 | operator f0*(); // expected-note {{candidate}} |
| 869 | operator f1*(); // expected-note {{candidate}} |
| 870 | operator f2*(); // expected-note {{candidate}} |
| 871 | operator f3*(); // expected-note {{candidate}} |
| 872 | }; |
| 873 | struct D : private A, B { // expected-note 2{{here}} |
| 874 | operator f2*(); // expected-note {{candidate}} |
| 875 | } d; |
| 876 | struct E : C, D {} e; |
| 877 | void g() { |
| 878 | d(); // ok, public |
| 879 | d(0); // expected-error {{private member of 'dr280::A'}} expected-error {{private base class 'dr280::A'}} |
| 880 | d(0, 0); // ok, suppressed by member in D |
| 881 | d(0, 0, 0); // expected-error {{private member of 'dr280::B'}} |
| 882 | e(); // expected-error {{ambiguous}} |
| 883 | e(0); // expected-error {{ambiguous}} |
| 884 | e(0, 0); // expected-error {{ambiguous}} |
| 885 | e(0, 0, 0); // expected-error {{ambiguous}} |
| 886 | } |
| 887 | } |
| 888 | |
| 889 | namespace dr281 { // dr281: no |
| 890 | void a(); |
| 891 | inline void b(); |
| 892 | |
| 893 | void d(); |
| 894 | inline void e(); |
| 895 | |
| 896 | struct S { |
| 897 | friend inline void a(); // FIXME: ill-formed |
| 898 | friend inline void b(); |
| 899 | friend inline void c(); // FIXME: ill-formed |
| 900 | friend inline void d() {} |
| 901 | friend inline void e() {} |
| 902 | friend inline void f() {} |
| 903 | }; |
| 904 | } |
| 905 | |
| 906 | namespace dr283 { // dr283: yes |
| 907 | template<typename T> // expected-note 2{{here}} |
| 908 | struct S { |
| 909 | friend class T; // expected-error {{shadows}} |
| 910 | class T; // expected-error {{shadows}} |
| 911 | }; |
| 912 | } |
| 913 | |
| 914 | namespace dr284 { // dr284: no |
| 915 | namespace A { |
| 916 | struct X; |
| 917 | enum Y {}; |
| 918 | class Z {}; |
| 919 | } |
| 920 | namespace B { |
| 921 | struct W; |
| 922 | using A::X; |
| 923 | using A::Y; |
| 924 | using A::Z; |
| 925 | } |
| 926 | struct B::V {}; // expected-error {{no struct named 'V'}} |
| 927 | struct B::W {}; |
| 928 | struct B::X {}; // FIXME: ill-formed |
| 929 | enum B::Y e; // ok per dr417 |
| 930 | class B::Z z; // ok per dr417 |
| 931 | |
| 932 | struct C { |
| 933 | struct X; |
| 934 | enum Y {}; |
| 935 | class Z {}; |
| 936 | }; |
| 937 | struct D : C { |
| 938 | struct W; |
| 939 | using C::X; |
| 940 | using C::Y; |
| 941 | using C::Z; |
| 942 | }; |
| 943 | struct D::V {}; // expected-error {{no struct named 'V'}} |
| 944 | struct D::W {}; |
| 945 | struct D::X {}; // FIXME: ill-formed |
| 946 | enum D::Y e2; // ok per dr417 |
| 947 | class D::Z z2; // ok per dr417 |
| 948 | } |
| 949 | |
| 950 | namespace dr285 { // dr285: yes |
| 951 | template<typename T> void f(T, int); // expected-note {{match}} |
| 952 | template<typename T> void f(int, T); // expected-note {{match}} |
| 953 | template<> void f<int>(int, int) {} // expected-error {{ambiguous}} |
| 954 | } |
| 955 | |
| 956 | namespace dr286 { // dr286: yes |
| 957 | template<class T> struct A { |
| 958 | class C { |
| 959 | template<class T2> struct B {}; // expected-note {{here}} |
| 960 | }; |
| 961 | }; |
| 962 | |
| 963 | template<class T> |
| 964 | template<class T2> |
| 965 | struct A<T>::C::B<T2*> { }; |
| 966 | |
| 967 | A<short>::C::B<int*> absip; // expected-error {{private}} |
| 968 | } |
| 969 | |
| 970 | // dr288: na |
| 971 | |
| 972 | namespace dr289 { // dr289: yes |
| 973 | struct A; // expected-note {{forward}} |
| 974 | struct B : A {}; // expected-error {{incomplete}} |
| 975 | |
| 976 | template<typename T> struct C { typename T::error error; }; // expected-error {{cannot be used prior to '::'}} |
| 977 | struct D : C<int> {}; // expected-note {{instantiation}} |
| 978 | } |
| 979 | |
| 980 | // dr290: na |
| 981 | // dr291: dup 391 |
| 982 | // dr292 FIXME: write a codegen test |
| 983 | |
| 984 | namespace dr294 { // dr294: no |
| 985 | void f() throw(int); |
| 986 | #if __cplusplus > 201402L |
| 987 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
| 988 | #endif |
| 989 | int main() { |
| 990 | (void)static_cast<void (*)() throw()>(f); // FIXME: ill-formed in C++14 and before |
| 991 | #if __cplusplus > 201402L |
| 992 | // FIXME: expected-error@-2 {{not allowed}} |
| 993 | // |
| 994 | // Irony: the above is valid in C++17 and beyond, but that's exactly when |
| 995 | // we reject it. In C++14 and before, this is ill-formed because an |
| 996 | // exception-specification is not permitted in a type-id. In C++17, this is |
| 997 | // valid because it's the inverse of a standard conversion sequence |
| 998 | // containing a function pointer conversion. (Well, it's actually not valid |
| 999 | // yet, as a static_cast is not permitted to reverse a function pointer |
| 1000 | // conversion, but that is being changed by core issue). |
| 1001 | #endif |
| 1002 | (void)static_cast<void (*)() throw(int)>(f); // FIXME: ill-formed in C++14 and before |
| 1003 | #if __cplusplus > 201402L |
| 1004 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
| 1005 | #endif |
| 1006 | |
| 1007 | void (*p)() throw() = f; // expected-error-re {{{{not superset|different exception specification}}}} |
| 1008 | void (*q)() throw(int) = f; |
| 1009 | #if __cplusplus > 201402L |
| 1010 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
| 1011 | #endif |
| 1012 | } |
| 1013 | } |
| 1014 | |
| 1015 | namespace dr295 { // dr295: 3.7 |
| 1016 | typedef int f(); |
| 1017 | const f g; // expected-warning {{'const' qualifier on function type 'dr295::f' (aka 'int ()') has no effect}} |
| 1018 | f &r = g; |
| 1019 | template<typename T> struct X { |
| 1020 | const T &f; |
| 1021 | }; |
| 1022 | X<f> x = {g}; |
| 1023 | |
| 1024 | typedef int U(); |
| 1025 | typedef const U U; // expected-warning {{'const' qualifier on function type 'dr295::U' (aka 'int ()') has no effect}} |
| 1026 | |
| 1027 | typedef int (*V)(); |
| 1028 | typedef volatile U *V; // expected-warning {{'volatile' qualifier on function type 'dr295::U' (aka 'int ()') has no effect}} |
| 1029 | } |
| 1030 | |
| 1031 | namespace dr296 { // dr296: yes |
| 1032 | struct A { |
| 1033 | static operator int() { return 0; } // expected-error {{static}} |
| 1034 | }; |
| 1035 | } |
| 1036 | |
| 1037 | namespace dr298 { // dr298: yes |
| 1038 | struct A { |
| 1039 | typedef int type; |
| 1040 | A(); |
| 1041 | ~A(); |
| 1042 | }; |
| 1043 | typedef A B; // expected-note {{here}} |
| 1044 | typedef const A C; // expected-note {{here}} |
| 1045 | |
| 1046 | A::type i1; |
| 1047 | B::type i2; |
| 1048 | C::type i3; |
| 1049 | |
| 1050 | struct A a; |
| 1051 | struct B b; // expected-error {{typedef 'B' cannot be referenced with a struct specifier}} |
| 1052 | struct C c; // expected-error {{typedef 'C' cannot be referenced with a struct specifier}} |
| 1053 | |
| 1054 | B::B() {} // expected-error {{requires a type specifier}} |
| 1055 | B::A() {} // ok |
| 1056 | C::~C() {} // expected-error {{destructor cannot be declared using a typedef 'dr298::C' (aka 'const dr298::A') of the class name}} |
| 1057 | |
| 1058 | typedef struct D E; // expected-note {{here}} |
| 1059 | struct E {}; // expected-error {{conflicts with typedef}} |
| 1060 | |
| 1061 | struct F { |
| 1062 | ~F(); |
| 1063 | }; |
| 1064 | typedef const F G; |
| 1065 | G::~F() {} // ok |
| 1066 | } |
| 1067 | |
| 1068 | namespace dr299 { // dr299: yes c++11 |
| 1069 | struct S { |
| 1070 | operator int(); |
| 1071 | }; |
| 1072 | struct T { |
| 1073 | operator int(); // expected-note {{}} |
| 1074 | operator unsigned short(); // expected-note {{}} |
| 1075 | }; |
| 1076 | // FIXME: should this apply to c++98 mode? |
| 1077 | int *p = new int[S()]; // expected-error 0-1{{extension}} |
| 1078 | int *q = new int[T()]; // expected-error {{ambiguous}} |
| 1079 | } |
| 1080 | |