| 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 | // FIXME: This is included to avoid a diagnostic with no source location |
| 7 | // pointing at the implicit operator new. We can't match such a diagnostic |
| 8 | // with -verify. |
| 9 | __extension__ typedef __SIZE_TYPE__ size_t; |
| 10 | void *operator new(size_t); // expected-error 0-1{{missing exception spec}} expected-note{{candidate}} |
| 11 | #if __cplusplus > 201402L |
| 12 | namespace std { |
| 13 | enum class align_val_t : size_t {}; |
| 14 | } |
| 15 | void *operator new(size_t, std::align_val_t); // expected-note{{candidate}} |
| 16 | #endif |
| 17 | |
| 18 | namespace dr500 { // dr500: dup 372 |
| 19 | class D; |
| 20 | class A { |
| 21 | class B; |
| 22 | class C; |
| 23 | friend class D; |
| 24 | }; |
| 25 | class A::B {}; |
| 26 | class A::C : public A::B {}; |
| 27 | class D : public A::B {}; |
| 28 | } |
| 29 | |
| 30 | namespace dr501 { // dr501: yes |
| 31 | struct A { |
| 32 | friend void f() {} |
| 33 | void g() { |
| 34 | void (*p)() = &f; // expected-error {{undeclared identifier}} |
| 35 | } |
| 36 | }; |
| 37 | } |
| 38 | |
| 39 | namespace dr502 { // dr502: yes |
| 40 | struct Q {}; |
| 41 | template<typename T> struct A { |
| 42 | enum E { e = 1 }; |
| 43 | void q1() { f(e); } |
| 44 | void q2() { Q arr[sizeof(E)]; f(arr); } |
| 45 | void q3() { Q arr[e]; f(arr); } |
| 46 | void sanity() { Q arr[1]; f(arr); } // expected-error {{undeclared identifier 'f'}} |
| 47 | }; |
| 48 | int f(A<int>::E); |
| 49 | template<int N> int f(Q (&)[N]); |
| 50 | template struct A<int>; |
| 51 | } |
| 52 | |
| 53 | namespace dr505 { // dr505: yes |
| 54 | const char *exts = "\e\(\{\[\%"; // expected-error 5{{use of non-standard escape}} |
| 55 | const char *unknown = "\Q"; // expected-error {{unknown escape sequence}} |
| 56 | } |
| 57 | |
| 58 | namespace dr506 { // dr506: yes |
| 59 | struct NonPod { ~NonPod(); }; |
| 60 | void f(...); |
| 61 | void g(NonPod np) { f(np); } // expected-error {{cannot pass}} |
| 62 | } |
| 63 | |
| 64 | // FIXME: Add tests here once DR260 is resolved. |
| 65 | // dr507: dup 260 |
| 66 | |
| 67 | // dr508: na |
| 68 | // dr509: na |
| 69 | // dr510: na |
| 70 | |
| 71 | namespace dr512 { // dr512: yes |
| 72 | struct A { |
| 73 | A(int); |
| 74 | }; |
| 75 | union U { A a; }; |
| 76 | #if __cplusplus < 201103L |
| 77 | // expected-error@-2 {{has a non-trivial default constructor}} |
| 78 | // expected-note@-6 {{no default constructor}} |
| 79 | // expected-note@-6 {{suppressed by user-declared constructor}} |
| 80 | #endif |
| 81 | } |
| 82 | |
| 83 | // dr513: na |
| 84 | |
| 85 | namespace dr514 { // dr514: yes |
| 86 | namespace A { extern int x, y; } |
| 87 | int A::x = y; |
| 88 | } |
| 89 | |
| 90 | namespace dr515 { // dr515: sup 1017 |
| 91 | // FIXME: dr1017 reverses the wording of dr515, but the current draft has |
| 92 | // dr515's wording, with a different fix for dr1017. |
| 93 | |
| 94 | struct X { int n; }; |
| 95 | template<typename T> struct Y : T { |
| 96 | int f() { return X::n; } |
| 97 | }; |
| 98 | int k = Y<X>().f(); |
| 99 | |
| 100 | struct A { int a; }; |
| 101 | struct B { void f() { int k = sizeof(A::a); } }; |
| 102 | #if __cplusplus < 201103L |
| 103 | // expected-error@-2 {{invalid use of non-static data member}} |
| 104 | #endif |
| 105 | } |
| 106 | |
| 107 | // dr516: na |
| 108 | |
| 109 | namespace dr517 { // dr517: no |
| 110 | // This is NDR, but we should diagnose it anyway. |
| 111 | template<typename T> struct S {}; |
| 112 | template<typename T> int v = 0; // expected-error 0-1{{extension}} |
| 113 | |
| 114 | template struct S<int*>; |
| 115 | template int v<int*>; |
| 116 | |
| 117 | S<char&> s; |
| 118 | int k = v<char&>; |
| 119 | |
| 120 | // FIXME: These are both ill-formed. |
| 121 | template<typename T> struct S<T*> {}; |
| 122 | template<typename T> int v<T*> = 0; // expected-error 0-1{{extension}} |
| 123 | |
| 124 | // FIXME: These are both ill-formed. |
| 125 | template<typename T> struct S<T&> {}; |
| 126 | template<typename T> int v<T&> = 0; // expected-error 0-1{{extension}} |
| 127 | } |
| 128 | |
| 129 | namespace dr518 { // dr518: yes c++11 |
| 130 | enum E { e, }; |
| 131 | #if __cplusplus < 201103L |
| 132 | // expected-error@-2 {{C++11 extension}} |
| 133 | #endif |
| 134 | } |
| 135 | |
| 136 | namespace dr519 { // dr519: yes |
| 137 | // FIXME: Add a codegen test. |
| 138 | #if __cplusplus >= 201103L |
| 139 | #define fold(x) (__builtin_constant_p(x) ? (x) : (x)) |
| 140 | int test[fold((int*)(void*)0) ? -1 : 1]; |
| 141 | #undef fold |
| 142 | #endif |
| 143 | } |
| 144 | |
| 145 | // dr520: na |
| 146 | |
| 147 | // dr521: no |
| 148 | // FIXME: The wording here is broken. It's not reasonable to expect a |
| 149 | // diagnostic here. Once the relevant DR gets a number, mark this as a dup. |
| 150 | |
| 151 | namespace dr522 { // dr522: yes |
| 152 | struct S {}; |
| 153 | template<typename T> void b1(volatile T &); |
| 154 | template<typename T> void b2(volatile T * const *); |
| 155 | template<typename T> void b2(volatile T * const S::*); |
| 156 | template<typename T> void b2(volatile T * const S::* const *); |
| 157 | template<typename T> void b2a(volatile T *S::* const *); // expected-note {{candidate template ignored: deduced type 'volatile int *dr522::S::*const *' of 1st parameter does not match adjusted type 'int *dr522::S::**' of argument}} |
| 158 | |
| 159 | template<typename T> struct Base {}; |
| 160 | struct Derived : Base<int> {}; |
| 161 | template<typename T> void b3(Base<T>); |
| 162 | template<typename T> void b3(Base<T> *); |
| 163 | |
| 164 | void test(int n, const int cn, int **p, int *S::*pm) { |
| 165 | int *a[3], *S::*am[3]; |
| 166 | const Derived cd = Derived(); |
| 167 | Derived d[3]; |
| 168 | |
| 169 | b1(n); |
| 170 | b1(cn); |
| 171 | b2(p); |
| 172 | b2(pm); |
| 173 | b2(a); |
| 174 | b2(am); |
| 175 | b2a(am); // expected-error {{no matching function}} |
| 176 | b3(d); |
| 177 | b3(cd); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | namespace dr524 { // dr524: yes |
| 182 | template<typename T> void f(T a, T b) { operator+(a, b); } // expected-error {{call}} |
| 183 | |
| 184 | struct S {}; |
| 185 | void operator+(S, S); |
| 186 | template void f(S, S); |
| 187 | |
| 188 | namespace N { struct S {}; } |
| 189 | void operator+(N::S, N::S); // expected-note {{should be declared}} |
| 190 | template void f(N::S, N::S); // expected-note {{instantiation}} |
| 191 | } |
| 192 | |
| 193 | namespace dr525 { // dr525: yes |
| 194 | namespace before { |
| 195 | // Note, the example was correct prior to the change; instantiation is |
| 196 | // required for cases like this: |
| 197 | template <class T> struct D { operator T*(); }; |
| 198 | void g(D<double> ppp) { |
| 199 | delete ppp; |
| 200 | } |
| 201 | } |
| 202 | namespace after { |
| 203 | template <class T> struct D { typename T::error e; }; // expected-error {{prior to '::'}} |
| 204 | void g(D<double> *ppp) { |
| 205 | delete ppp; // expected-note {{instantiation of}} |
| 206 | } |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | namespace dr526 { // dr526: yes |
| 211 | template<int> struct S {}; |
| 212 | template<int N> void f1(S<N> s); |
| 213 | template<int N> void f2(S<(N)> s); // expected-note {{couldn't infer}} |
| 214 | template<int N> void f3(S<+N> s); // expected-note {{couldn't infer}} |
| 215 | template<int N> void g1(int (&)[N]); |
| 216 | template<int N> void g2(int (&)[(N)]); // expected-note {{couldn't infer}} |
| 217 | template<int N> void g3(int (&)[+N]); // expected-note {{couldn't infer}} |
| 218 | |
| 219 | void test(int (&a)[3], S<3> s) { |
| 220 | f1(s); |
| 221 | f2(s); // expected-error {{no matching}} |
| 222 | f3(s); // expected-error {{no matching}} |
| 223 | g1(a); |
| 224 | g2(a); // expected-error {{no matching}} |
| 225 | g3(a); // expected-error {{no matching}} |
| 226 | } |
| 227 | |
| 228 | template<int N> struct X { |
| 229 | typedef int type; |
| 230 | X<N>::type v1; |
| 231 | X<(N)>::type v2; // expected-error {{missing 'typename'}} |
| 232 | X<+N>::type v3; // expected-error {{missing 'typename'}} |
| 233 | }; |
| 234 | } |
| 235 | |
| 236 | namespace dr527 { // dr527: na |
| 237 | // This DR is meaningless. It removes a required diagnostic from the case |
| 238 | // where a not-externally-visible object is odr-used but not defined, which |
| 239 | // requires a diagnostic for a different reason. |
| 240 | extern struct { int x; } a; // FIXME: We should reject this, per dr389. |
| 241 | static struct { int x; } b; |
| 242 | extern "C" struct { int x; } c; |
| 243 | namespace { extern struct { int x; } d; } |
| 244 | typedef struct { int x; } *P; |
| 245 | struct E { static P e; }; // FIXME: We should reject this, per dr389. |
| 246 | namespace { struct F { static P f; }; } |
| 247 | |
| 248 | int ax = a.x, bx = b.x, cx = c.x, dx = d.x, ex = E::e->x, fx = F::f->x; |
| 249 | } |
| 250 | |
| 251 | namespace dr530 { // dr530: yes |
| 252 | template<int*> struct S { enum { N = 1 }; }; |
| 253 | template<void(*)()> struct T { enum { N = 1 }; }; |
| 254 | int n; |
| 255 | void f(); |
| 256 | int a[S<&n>::N]; |
| 257 | int b[T<&f>::N]; |
| 258 | } |
| 259 | |
| 260 | namespace dr531 { // dr531: partial |
| 261 | namespace good { |
| 262 | template<typename T> struct A { |
| 263 | void f(T) { T::error; } |
| 264 | template<typename U> void g(T, U) { T::error; } |
| 265 | struct B { typename T::error error; }; |
| 266 | template<typename U> struct C { typename T::error error; }; |
| 267 | static T n; |
| 268 | }; |
| 269 | template<typename T> T A<T>::n = T::error; |
| 270 | |
| 271 | template<> void A<int>::f(int) {} |
| 272 | template<> template<typename U> void A<int>::g(int, U) {} |
| 273 | template<> struct A<int>::B {}; |
| 274 | template<> template<typename U> struct A<int>::C {}; |
| 275 | template<> int A<int>::n = 0; |
| 276 | |
| 277 | void use(A<int> a) { |
| 278 | a.f(a.n); |
| 279 | a.g(0, 0); |
| 280 | A<int>::B b; |
| 281 | A<int>::C<int> c; |
| 282 | } |
| 283 | |
| 284 | template<> struct A<char> { |
| 285 | void f(char); |
| 286 | template<typename U> void g(char, U); |
| 287 | struct B; |
| 288 | template<typename U> struct C; |
| 289 | static char n; |
| 290 | }; |
| 291 | |
| 292 | void A<char>::f(char) {} |
| 293 | template<typename U> void A<char>::g(char, U) {} |
| 294 | struct A<char>::B {}; |
| 295 | template<typename U> struct A<char>::C {}; |
| 296 | char A<char>::n = 0; |
| 297 | } |
| 298 | |
| 299 | namespace bad { |
| 300 | template<typename T> struct A { |
| 301 | void f(T) { T::error; } |
| 302 | template<typename U> void g(T, U) { T::error; } |
| 303 | struct B { typename T::error error; }; |
| 304 | template<typename U> struct C { typename T::error error; }; // expected-note {{here}} |
| 305 | static T n; |
| 306 | }; |
| 307 | template<typename T> T A<T>::n = T::error; |
| 308 | |
| 309 | void A<int>::f(int) {} // expected-error {{requires 'template<>'}} |
| 310 | template<typename U> void A<int>::g(int, U) {} // expected-error {{should be empty}} |
| 311 | struct A<int>::B {}; // expected-error {{requires 'template<>'}} |
| 312 | template<typename U> struct A<int>::C {}; // expected-error {{should be empty}} expected-error {{different kind of symbol}} |
| 313 | int A<int>::n = 0; // expected-error {{requires 'template<>'}} |
| 314 | |
| 315 | template<> struct A<char> { // expected-note 2{{here}} |
| 316 | void f(char); |
| 317 | template<typename U> void g(char, U); |
| 318 | struct B; // expected-note {{here}} |
| 319 | template<typename U> struct C; |
| 320 | static char n; |
| 321 | }; |
| 322 | |
| 323 | template<> void A<char>::f(char) {} // expected-error {{no function template matches}} |
| 324 | // FIXME: This is ill-formed; -pedantic-errors should reject. |
| 325 | template<> template<typename U> void A<char>::g(char, U) {} // expected-warning {{extraneous template parameter list}} |
| 326 | template<> struct A<char>::B {}; // expected-error {{extraneous 'template<>'}} expected-error {{does not specialize}} |
| 327 | // FIXME: This is ill-formed; -pedantic-errors should reject. |
| 328 | template<> template<typename U> struct A<char>::C {}; // expected-warning {{extraneous template parameter list}} |
| 329 | template<> char A<char>::n = 0; // expected-error {{extraneous 'template<>'}} |
| 330 | } |
| 331 | |
| 332 | namespace nested { |
| 333 | template<typename T> struct A { |
| 334 | template<typename U> struct B; |
| 335 | }; |
| 336 | template<> template<typename U> struct A<int>::B { |
| 337 | void f(); |
| 338 | void g(); |
| 339 | template<typename V> void h(); |
| 340 | template<typename V> void i(); |
| 341 | }; |
| 342 | template<> template<typename U> void A<int>::B<U>::f() {} |
| 343 | template<typename U> void A<int>::B<U>::g() {} // expected-error {{should be empty}} |
| 344 | |
| 345 | template<> template<typename U> template<typename V> void A<int>::B<U>::h() {} |
| 346 | template<typename U> template<typename V> void A<int>::B<U>::i() {} // expected-error {{should be empty}} |
| 347 | |
| 348 | template<> template<> void A<int>::B<int>::f() {} |
| 349 | template<> template<> template<typename V> void A<int>::B<int>::h() {} |
| 350 | template<> template<> template<> void A<int>::B<int>::h<int>() {} |
| 351 | |
| 352 | template<> void A<int>::B<char>::f() {} // expected-error {{requires 'template<>'}} |
| 353 | template<> template<typename V> void A<int>::B<char>::h() {} // expected-error {{should be empty}} |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | // PR8130 |
| 358 | namespace dr532 { // dr532: 3.5 |
| 359 | struct A { }; |
| 360 | |
| 361 | template<class T> struct B { |
| 362 | template<class R> int &operator*(R&); |
| 363 | }; |
| 364 | |
| 365 | template<class T, class R> float &operator*(T&, R&); |
| 366 | void test() { |
| 367 | A a; |
| 368 | B<A> b; |
| 369 | int &ir = b * a; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | // dr533: na |
| 374 | |
| 375 | namespace dr534 { // dr534: yes |
| 376 | struct S {}; |
| 377 | template<typename T> void operator+(S, T); |
| 378 | template<typename T> void operator+<T*>(S, T*) {} // expected-error {{function template partial spec}} |
| 379 | } |
| 380 | |
| 381 | namespace dr535 { // dr535: yes |
| 382 | class X { private: X(const X&); }; |
| 383 | struct A { |
| 384 | X x; |
| 385 | template<typename T> A(T&); |
| 386 | }; |
| 387 | struct B : A { |
| 388 | X y; |
| 389 | B(volatile A&); |
| 390 | }; |
| 391 | |
| 392 | extern A a1; |
| 393 | A a2(a1); // ok, uses constructor template |
| 394 | |
| 395 | extern volatile B b1; |
| 396 | B b2(b1); // ok, uses converting constructor |
| 397 | |
| 398 | void f() { throw a1; } |
| 399 | |
| 400 | #if __cplusplus >= 201103L |
| 401 | struct C { |
| 402 | constexpr C() : n(0) {} |
| 403 | template<typename T> constexpr C(T&t) : n(t.n == 0 ? throw 0 : 0) {} |
| 404 | int n; |
| 405 | }; |
| 406 | constexpr C c() { return C(); } |
| 407 | // ok, copy is elided |
| 408 | constexpr C x = c(); |
| 409 | #endif |
| 410 | } |
| 411 | |
| 412 | // dr537: na |
| 413 | // dr538: na |
| 414 | |
| 415 | // dr539: yes |
| 416 | const dr539( // expected-error {{requires a type specifier}} |
| 417 | const a) { // expected-error {{unknown type name 'a'}} |
| 418 | const b; // expected-error {{requires a type specifier}} |
| 419 | new const; // expected-error {{expected a type}} |
| 420 | try {} catch (const n) {} // expected-error {{unknown type name 'n'}} |
| 421 | try {} catch (const) {} // expected-error {{expected a type}} |
| 422 | if (const n = 0) {} // expected-error {{requires a type specifier}} |
| 423 | switch (const n = 0) {} // expected-error {{requires a type specifier}} |
| 424 | while (const n = 0) {} // expected-error {{requires a type specifier}} |
| 425 | for (const n = 0; // expected-error {{requires a type specifier}} |
| 426 | const m = 0; ) {} // expected-error {{requires a type specifier}} |
| 427 | sizeof(const); // expected-error {{requires a type specifier}} |
| 428 | struct S { |
| 429 | const n; // expected-error {{requires a type specifier}} |
| 430 | operator const(); // expected-error {{expected a type}} |
| 431 | }; |
| 432 | #if __cplusplus >= 201103L |
| 433 | int arr[3]; |
| 434 | // FIXME: The extra braces here are to avoid the parser getting too |
| 435 | // badly confused when recovering here. We should fix this recovery. |
| 436 | { for (const n // expected-error {{unknown type name 'n'}} expected-note {{}} |
| 437 | : arr) ; {} } // expected-error +{{}} |
| 438 | (void) [](const) {}; // expected-error {{requires a type specifier}} |
| 439 | (void) [](const n) {}; // expected-error {{unknown type name 'n'}} |
| 440 | enum E : const {}; // expected-error {{expected a type}} |
| 441 | using T = const; // expected-error {{expected a type}} |
| 442 | auto f() -> const; // expected-error {{expected a type}} |
| 443 | #endif |
| 444 | } |
| 445 | |
| 446 | namespace dr540 { // dr540: yes |
| 447 | typedef int &a; |
| 448 | typedef const a &a; // expected-warning {{has no effect}} |
| 449 | typedef const int &b; |
| 450 | typedef b &b; |
| 451 | typedef const a &c; // expected-note {{previous}} expected-warning {{has no effect}} |
| 452 | typedef const b &c; // expected-error {{different}} expected-warning {{has no effect}} |
| 453 | } |
| 454 | |
| 455 | namespace dr541 { // dr541: yes |
| 456 | template<int> struct X { typedef int type; }; |
| 457 | template<typename T> struct S { |
| 458 | int f(T); |
| 459 | |
| 460 | int g(int); |
| 461 | T g(bool); |
| 462 | |
| 463 | int h(); |
| 464 | int h(T); |
| 465 | |
| 466 | void x() { |
| 467 | // These are type-dependent expressions, even though we could |
| 468 | // determine that all calls have type 'int'. |
| 469 | X<sizeof(f(0))>::type a; // expected-error +{{}} |
| 470 | X<sizeof(g(0))>::type b; // expected-error +{{}} |
| 471 | X<sizeof(h(0))>::type b; // expected-error +{{}} |
| 472 | |
| 473 | typename X<sizeof(f(0))>::type a; |
| 474 | typename X<sizeof(h(0))>::type b; |
| 475 | } |
| 476 | }; |
| 477 | } |
| 478 | |
| 479 | namespace dr542 { // dr542: yes |
| 480 | #if __cplusplus >= 201103L |
| 481 | struct A { A() = delete; int n; }; |
| 482 | A a[32] = {}; // ok, constructor not called |
| 483 | |
| 484 | struct B { |
| 485 | int n; |
| 486 | private: |
| 487 | B() = default; |
| 488 | }; |
| 489 | B b[32] = {}; // ok, constructor not called |
| 490 | #endif |
| 491 | } |
| 492 | |
| 493 | namespace dr543 { // dr543: yes |
| 494 | // In C++98+DR543, this is valid because value-initialization doesn't call a |
| 495 | // trivial default constructor, so we never notice that defining the |
| 496 | // constructor would be ill-formed. |
| 497 | // |
| 498 | // In C++11+DR543, this is ill-formed, because the default constructor is |
| 499 | // deleted, and value-initialization *does* call a deleted default |
| 500 | // constructor, even if it is trivial. |
| 501 | struct A { |
| 502 | const int n; |
| 503 | }; |
| 504 | A a = A(); |
| 505 | #if __cplusplus >= 201103L |
| 506 | // expected-error@-2 {{deleted}} |
| 507 | // expected-note@-5 {{would not be initialized}} |
| 508 | #endif |
| 509 | } |
| 510 | |
| 511 | namespace dr544 { // dr544: yes |
| 512 | int *n; |
| 513 | |
| 514 | template<class T> struct A { int n; }; |
| 515 | template<class T> struct B : A<T> { int get(); }; |
| 516 | template<> int B<int>::get() { return n; } |
| 517 | int k = B<int>().get(); |
| 518 | } |
| 519 | |
| 520 | namespace dr546 { // dr546: yes |
| 521 | template<typename T> struct A { void f(); }; |
| 522 | template struct A<int>; |
| 523 | template<typename T> void A<T>::f() { T::error; } |
| 524 | } |
| 525 | |
| 526 | namespace dr547 { // dr547: yes |
| 527 | template<typename T> struct X; |
| 528 | template<typename T> struct X<T() const> {}; |
| 529 | template<typename T, typename C> X<T> f(T C::*) { return X<T>(); } |
| 530 | |
| 531 | struct S { void f() const; }; |
| 532 | X<void() const> x = f(&S::f); |
| 533 | } |
| 534 | |
| 535 | namespace dr548 { // dr548: dup 482 |
| 536 | template<typename T> struct S {}; |
| 537 | template<typename T> void f() {} |
| 538 | template struct dr548::S<int>; |
| 539 | template void dr548::f<int>(); |
| 540 | } |
| 541 | |
| 542 | namespace dr551 { // dr551: yes c++11 |
| 543 | // FIXME: This obviously should apply in C++98 mode too. |
| 544 | template<typename T> void f() {} |
| 545 | template inline void f<int>(); |
| 546 | #if __cplusplus >= 201103L |
| 547 | // expected-error@-2 {{cannot be 'inline'}} |
| 548 | #endif |
| 549 | |
| 550 | template<typename T> inline void g() {} |
| 551 | template inline void g<int>(); |
| 552 | #if __cplusplus >= 201103L |
| 553 | // expected-error@-2 {{cannot be 'inline'}} |
| 554 | #endif |
| 555 | |
| 556 | template<typename T> struct X { |
| 557 | void f() {} |
| 558 | }; |
| 559 | template inline void X<int>::f(); |
| 560 | #if __cplusplus >= 201103L |
| 561 | // expected-error@-2 {{cannot be 'inline'}} |
| 562 | #endif |
| 563 | } |
| 564 | |
| 565 | namespace dr552 { // dr552: yes |
| 566 | template<typename T, typename T::U> struct X {}; |
| 567 | struct Y { typedef int U; }; |
| 568 | X<Y, 0> x; |
| 569 | } |
| 570 | |
| 571 | struct dr553_class { |
| 572 | friend void *operator new(size_t, dr553_class); |
| 573 | }; |
| 574 | namespace dr553 { |
| 575 | dr553_class c; |
| 576 | // Contrary to the apparent intention of the DR, operator new is not actually |
| 577 | // looked up with a lookup mechanism that performs ADL; the standard says it |
| 578 | // "is looked up in global scope", where it is not visible. |
| 579 | void *p = new (c) int; // expected-error {{no matching function}} |
| 580 | |
| 581 | struct namespace_scope { |
| 582 | friend void *operator new(size_t, namespace_scope); // expected-error {{cannot be declared inside a namespace}} |
| 583 | }; |
| 584 | } |
| 585 | |
| 586 | // dr556: na |
| 587 | |
| 588 | namespace dr557 { // dr557: yes |
| 589 | template<typename T> struct S { |
| 590 | friend void f(S<T> *); |
| 591 | friend void g(S<S<T> > *); |
| 592 | }; |
| 593 | void x(S<int> *p, S<S<int> > *q) { |
| 594 | f(p); |
| 595 | g(q); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | namespace dr558 { // dr558: yes |
| 600 | wchar_t a = L'\uD7FF'; |
| 601 | wchar_t b = L'\xD7FF'; |
| 602 | wchar_t c = L'\uD800'; // expected-error {{invalid universal character}} |
| 603 | wchar_t d = L'\xD800'; |
| 604 | wchar_t e = L'\uDFFF'; // expected-error {{invalid universal character}} |
| 605 | wchar_t f = L'\xDFFF'; |
| 606 | wchar_t g = L'\uE000'; |
| 607 | wchar_t h = L'\xE000'; |
| 608 | } |
| 609 | |
| 610 | template<typename> struct dr559 { typedef int T; dr559::T u; }; // dr559: yes |
| 611 | |
| 612 | namespace dr561 { // dr561: yes |
| 613 | template<typename T> void f(int); |
| 614 | template<typename T> void g(T t) { |
| 615 | f<T>(t); |
| 616 | } |
| 617 | namespace { |
| 618 | struct S {}; |
| 619 | template<typename T> static void f(S); |
| 620 | } |
| 621 | void h(S s) { |
| 622 | g(s); |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | namespace dr564 { // dr564: yes |
| 627 | extern "C++" void f(int); |
| 628 | void f(int); // ok |
| 629 | extern "C++" { extern int n; } |
| 630 | int n; // ok |
| 631 | } |
| 632 | |
| 633 | namespace dr565 { // dr565: yes |
| 634 | namespace N { |
| 635 | template<typename T> int f(T); // expected-note {{target}} |
| 636 | } |
| 637 | using N::f; // expected-note {{using}} |
| 638 | template<typename T> int f(T*); |
| 639 | template<typename T> void f(T); |
| 640 | template<typename T, int = 0> int f(T); // expected-error 0-1{{extension}} |
| 641 | template<typename T> int f(T, int = 0); |
| 642 | template<typename T> int f(T); // expected-error {{conflicts with}} |
| 643 | } |
| 644 | |
| 645 | namespace dr566 { // dr566: yes |
| 646 | #if __cplusplus >= 201103L |
| 647 | int check[int(-3.99) == -3 ? 1 : -1]; |
| 648 | #endif |
| 649 | } |
| 650 | |
| 651 | // dr567: na |
| 652 | |
| 653 | namespace dr568 { // dr568: yes c++11 |
| 654 | // FIXME: This is a DR issue against C++98, so should probably apply there |
| 655 | // too. |
| 656 | struct x { int y; }; |
| 657 | class trivial : x { |
| 658 | x y; |
| 659 | public: |
| 660 | int n; |
| 661 | }; |
| 662 | int check_trivial[__is_trivial(trivial) ? 1 : -1]; |
| 663 | |
| 664 | struct std_layout { |
| 665 | std_layout(); |
| 666 | std_layout(const std_layout &); |
| 667 | ~std_layout(); |
| 668 | private: |
| 669 | int n; |
| 670 | }; |
| 671 | int check_std_layout[__is_standard_layout(std_layout) ? 1 : -1]; |
| 672 | |
| 673 | struct aggregate { |
| 674 | int x; |
| 675 | int y; |
| 676 | trivial t; |
| 677 | std_layout sl; |
| 678 | }; |
| 679 | aggregate aggr = {}; |
| 680 | |
| 681 | void f(...); |
| 682 | void g(trivial t) { f(t); } |
| 683 | #if __cplusplus < 201103L |
| 684 | // expected-error@-2 {{non-POD}} |
| 685 | #endif |
| 686 | |
| 687 | void jump() { |
| 688 | goto x; |
| 689 | #if __cplusplus < 201103L |
| 690 | // expected-error@-2 {{cannot jump}} |
| 691 | // expected-note@+2 {{non-POD}} |
| 692 | #endif |
| 693 | trivial t; |
| 694 | x: ; |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | namespace dr569 { // dr569: yes c++11 |
| 699 | // FIXME: This is a DR issue against C++98, so should probably apply there |
| 700 | // too. |
| 701 | ;;;;; |
| 702 | #if __cplusplus < 201103L |
| 703 | // expected-error@-2 {{C++11 extension}} |
| 704 | #endif |
| 705 | } |
| 706 | |
| 707 | namespace dr570 { // dr570: dup 633 |
| 708 | int n; |
| 709 | int &r = n; // expected-note {{previous}} |
| 710 | int &r = n; // expected-error {{redefinition}} |
| 711 | } |
| 712 | |
| 713 | namespace dr571 { // dr571 unknown |
| 714 | // FIXME: Add a codegen test. |
| 715 | typedef int &ir; |
| 716 | int n; |
| 717 | const ir r = n; // expected-warning {{has no effect}} FIXME: Test if this has internal linkage. |
| 718 | } |
| 719 | |
| 720 | namespace dr572 { // dr572: yes |
| 721 | enum E { a = 1, b = 2 }; |
| 722 | int check[a + b == 3 ? 1 : -1]; |
| 723 | } |
| 724 | |
| 725 | namespace dr573 { // dr573: no |
| 726 | void *a; |
| 727 | int *b = reinterpret_cast<int*>(a); |
| 728 | void (*c)() = reinterpret_cast<void(*)()>(a); |
| 729 | void *d = reinterpret_cast<void*>(c); |
| 730 | #if __cplusplus < 201103L |
| 731 | // expected-error@-3 {{extension}} |
| 732 | // expected-error@-3 {{extension}} |
| 733 | #endif |
| 734 | void f() { delete a; } // expected-error {{cannot delete}} |
| 735 | int n = d - a; // expected-error {{arithmetic on pointers to void}} |
| 736 | // FIXME: This is ill-formed. |
| 737 | template<void*> struct S; |
| 738 | template<int*> struct T; |
| 739 | } |
| 740 | |
| 741 | namespace dr574 { // dr574: yes |
| 742 | struct A { |
| 743 | A &operator=(const A&) const; // expected-note {{different qualifiers}} |
| 744 | }; |
| 745 | struct B { |
| 746 | B &operator=(const B&) volatile; // expected-note {{different qualifiers}} |
| 747 | }; |
| 748 | #if __cplusplus >= 201103L |
| 749 | struct C { |
| 750 | C &operator=(const C&) &; // expected-note {{not viable}} expected-note {{candidate}} expected-note {{here}} |
| 751 | }; |
| 752 | struct D { |
| 753 | D &operator=(const D&) &&; // expected-note {{not viable}} expected-note {{candidate}} expected-note {{here}} |
| 754 | }; |
| 755 | void test(C c, D d) { |
| 756 | c = c; |
| 757 | C() = c; // expected-error {{no viable}} |
| 758 | d = d; // expected-error {{no viable}} |
| 759 | D() = d; |
| 760 | } |
| 761 | #endif |
| 762 | struct Test { |
| 763 | friend A &A::operator=(const A&); // expected-error {{does not match}} |
| 764 | friend B &B::operator=(const B&); // expected-error {{does not match}} |
| 765 | #if __cplusplus >= 201103L |
| 766 | // FIXME: We shouldn't produce the 'cannot overload' diagnostics here. |
| 767 | friend C &C::operator=(const C&); // expected-error {{does not match}} expected-error {{cannot overload}} |
| 768 | friend D &D::operator=(const D&); // expected-error {{does not match}} expected-error {{cannot overload}} |
| 769 | #endif |
| 770 | }; |
| 771 | } |
| 772 | |
| 773 | namespace dr575 { // dr575: yes |
| 774 | template<typename T, typename U = typename T::type> void a(T); void a(...); // expected-error 0-1{{extension}} |
| 775 | template<typename T, typename T::type U = 0> void b(T); void b(...); // expected-error 0-1{{extension}} |
| 776 | template<typename T, int U = T::value> void c(T); void c(...); // expected-error 0-1{{extension}} |
| 777 | template<typename T> void d(T, int = T::value); void d(...); // expected-error {{cannot be used prior to '::'}} |
| 778 | void x() { |
| 779 | a(0); |
| 780 | b(0); |
| 781 | c(0); |
| 782 | d(0); // expected-note {{in instantiation of default function argument}} |
| 783 | } |
| 784 | |
| 785 | template<typename T = int&> void f(T* = 0); // expected-error 0-1{{extension}} |
| 786 | template<typename T = int> void f(T = 0); // expected-error 0-1{{extension}} |
| 787 | void g() { f<>(); } |
| 788 | |
| 789 | template<typename T> T &h(T *); |
| 790 | template<typename T> T *h(T *); |
| 791 | void *p = h((void*)0); |
| 792 | } |
| 793 | |
| 794 | namespace dr576 { // dr576: yes |
| 795 | typedef void f() {} // expected-error {{function definition declared 'typedef'}} |
| 796 | void f(typedef int n); // expected-error {{invalid storage class}} |
| 797 | void f(char c) { typedef int n; } |
| 798 | } |
| 799 | |
| 800 | namespace dr577 { // dr577: yes |
| 801 | typedef void V; |
| 802 | typedef const void CV; |
| 803 | void a(void); |
| 804 | void b(const void); // expected-error {{qualifiers}} |
| 805 | void c(V); |
| 806 | void d(CV); // expected-error {{qualifiers}} |
| 807 | void (*e)(void) = c; |
| 808 | void (*f)(const void); // expected-error {{qualifiers}} |
| 809 | void (*g)(V) = a; |
| 810 | void (*h)(CV); // expected-error {{qualifiers}} |
| 811 | template<typename T> void i(T); // expected-note 2{{requires 1 arg}} |
| 812 | template<typename T> void j(void (*)(T)); // expected-note 2{{argument may not have 'void' type}} |
| 813 | void k() { |
| 814 | a(); |
| 815 | c(); |
| 816 | i<void>(); // expected-error {{no match}} |
| 817 | i<const void>(); // expected-error {{no match}} |
| 818 | j<void>(0); // expected-error {{no match}} |
| 819 | j<const void>(0); // expected-error {{no match}} |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | namespace dr580 { // dr580: partial |
| 824 | class C; |
| 825 | struct A { static C c; }; |
| 826 | struct B { static C c; }; |
| 827 | class C { |
| 828 | C(); // expected-note {{here}} |
| 829 | ~C(); // expected-note {{here}} |
| 830 | |
| 831 | typedef int I; // expected-note 2{{here}} |
| 832 | template<int> struct X; |
| 833 | template<int> friend struct Y; |
| 834 | template<int> void f(); |
| 835 | template<int> friend void g(); |
| 836 | friend struct A; |
| 837 | }; |
| 838 | |
| 839 | template<C::I> struct C::X {}; |
| 840 | template<C::I> struct Y {}; |
| 841 | template<C::I> struct Z {}; // expected-error {{private}} |
| 842 | |
| 843 | struct C2 { |
| 844 | class X { |
| 845 | struct A; |
| 846 | typedef int I; |
| 847 | friend struct A; |
| 848 | }; |
| 849 | class Y { |
| 850 | template<X::I> struct A {}; // FIXME: We incorrectly accept this |
| 851 | // because we think C2::Y::A<...> might |
| 852 | // instantiate to C2::X::A |
| 853 | }; |
| 854 | }; |
| 855 | |
| 856 | template<C::I> void C::f() {} |
| 857 | template<C::I> void g() {} |
| 858 | template<C::I> void h() {} // expected-error {{private}} |
| 859 | |
| 860 | C A::c; |
| 861 | C B::c; // expected-error 2{{private}} |
| 862 | } |
| 863 | |
| 864 | // dr582: na |
| 865 | |
| 866 | namespace dr583 { // dr583: 4 |
| 867 | // see n3624 |
| 868 | int *p; |
| 869 | bool b1 = p < 0; // expected-error {{ordered comparison between pointer and zero}} |
| 870 | bool b2 = p > 0; // expected-error {{ordered comparison between pointer and zero}} |
| 871 | bool b3 = p <= 0; // expected-error {{ordered comparison between pointer and zero}} |
| 872 | bool b4 = p >= 0; // expected-error {{ordered comparison between pointer and zero}} |
| 873 | } |
| 874 | |
| 875 | // dr584: na |
| 876 | |
| 877 | namespace dr585 { // dr585: yes |
| 878 | template<typename> struct T; |
| 879 | struct A { |
| 880 | friend T; |
| 881 | #if __cplusplus <= 201402L |
| 882 | // expected-error@-2 {{requires a type specifier}} expected-error@-2 {{can only be classes or functions}} |
| 883 | #else |
| 884 | // expected-error@-4 {{use of class template 'T' requires template arguments; argument deduction not allowed in friend declaration}} |
| 885 | // expected-note@-7 {{here}} |
| 886 | #endif |
| 887 | // FIXME: It's not clear whether the standard allows this or what it means, |
| 888 | // but the DR585 writeup suggests it as an alternative. |
| 889 | template<typename U> friend T<U>; // expected-error {{must use an elaborated type}} |
| 890 | }; |
| 891 | template<template<typename> class T> struct B { |
| 892 | friend T; |
| 893 | #if __cplusplus <= 201402L |
| 894 | // expected-error@-2 {{requires a type specifier}} expected-error@-2 {{can only be classes or functions}} |
| 895 | #else |
| 896 | // expected-error@-4 {{use of template template parameter 'T' requires template arguments; argument deduction not allowed in friend declaration}} |
| 897 | // expected-note@-6 {{here}} |
| 898 | #endif |
| 899 | template<typename U> friend T<U>; // expected-error {{must use an elaborated type}} |
| 900 | }; |
| 901 | } |
| 902 | |
| 903 | // dr586: na |
| 904 | |
| 905 | namespace dr587 { // dr587: yes |
| 906 | template<typename T> void f(bool b, const T x, T y) { |
| 907 | const T *p = &(b ? x : y); |
| 908 | } |
| 909 | struct S {}; |
| 910 | template void f(bool, const int, int); |
| 911 | template void f(bool, const S, S); |
| 912 | } |
| 913 | |
| 914 | namespace dr588 { // dr588: yes |
| 915 | struct A { int n; }; // expected-note {{ambiguous}} |
| 916 | template<typename T> int f() { |
| 917 | struct S : A, T { int f() { return n; } } s; |
| 918 | int a = s.f(); |
| 919 | int b = s.n; // expected-error {{found in multiple}} |
| 920 | } |
| 921 | struct B { int n; }; // expected-note {{ambiguous}} |
| 922 | int k = f<B>(); // expected-note {{here}} |
| 923 | } |
| 924 | |
| 925 | namespace dr589 { // dr589: yes |
| 926 | struct B { }; |
| 927 | struct D : B { }; |
| 928 | D f(); |
| 929 | extern const B &b; |
| 930 | bool a; |
| 931 | const B *p = &(a ? f() : b); // expected-error {{temporary}} |
| 932 | const B *q = &(a ? D() : b); // expected-error {{temporary}} |
| 933 | } |
| 934 | |
| 935 | namespace dr590 { // dr590: yes |
| 936 | template<typename T> struct A { |
| 937 | struct B { |
| 938 | struct C { |
| 939 | A<T>::B::C f(A<T>::B::C); // ok, no 'typename' required. |
| 940 | }; |
| 941 | }; |
| 942 | }; |
| 943 | template<typename T> typename A<T>::B::C A<T>::B::C::f(A<T>::B::C) {} |
| 944 | } |
| 945 | |
| 946 | namespace dr591 { // dr591: no |
| 947 | template<typename T> struct A { |
| 948 | typedef int M; |
| 949 | struct B { |
| 950 | typedef void M; |
| 951 | struct C; |
| 952 | }; |
| 953 | }; |
| 954 | |
| 955 | template<typename T> struct A<T>::B::C : A<T> { |
| 956 | // FIXME: Should find member of non-dependent base class A<T>. |
| 957 | M m; // expected-error {{incomplete type 'dr591::A::B::M' (aka 'void'}} |
| 958 | }; |
| 959 | } |
| 960 | |
| 961 | // dr592: na |
| 962 | // dr593 needs an IRGen test. |
| 963 | // dr594: na |
| 964 | |
| 965 | namespace dr595 { // dr595: dup 1330 |
| 966 | template<class T> struct X { |
| 967 | void f() throw(T) {} |
| 968 | #if __cplusplus > 201402L |
| 969 | // expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}} |
| 970 | #endif |
| 971 | }; |
| 972 | struct S { |
| 973 | X<S> xs; |
| 974 | }; |
| 975 | } |
| 976 | |
| 977 | // dr597: na |
| 978 | |
| 979 | namespace dr598 { // dr598: yes |
| 980 | namespace N { |
| 981 | void f(int); |
| 982 | void f(char); |
| 983 | // Not found by ADL. |
| 984 | void g(void (*)(int)); |
| 985 | void h(void (*)(int)); |
| 986 | |
| 987 | namespace M { |
| 988 | struct S {}; |
| 989 | int &h(void (*)(S)); |
| 990 | } |
| 991 | void i(M::S); |
| 992 | void i(); |
| 993 | } |
| 994 | int &g(void(*)(char)); |
| 995 | int &r = g(N::f); |
| 996 | int &s = h(N::f); // expected-error {{undeclared}} |
| 997 | int &t = h(N::i); |
| 998 | } |
| 999 | |
| 1000 | namespace dr599 { // dr599: partial |
| 1001 | typedef int Fn(); |
| 1002 | struct S { operator void*(); }; |
| 1003 | struct T { operator Fn*(); }; |
| 1004 | struct U { operator int*(); operator void*(); }; // expected-note 2{{conversion}} |
| 1005 | struct V { operator int*(); operator Fn*(); }; |
| 1006 | void f(void *p, void (*q)(), S s, T t, U u, V v) { |
| 1007 | delete p; // expected-error {{cannot delete}} |
| 1008 | delete q; // expected-error {{cannot delete}} |
| 1009 | delete s; // expected-error {{cannot delete}} |
| 1010 | delete t; // expected-error {{cannot delete}} |
| 1011 | // FIXME: This is valid, but is rejected due to a non-conforming GNU |
| 1012 | // extension allowing deletion of pointers to void. |
| 1013 | delete u; // expected-error {{ambiguous}} |
| 1014 | delete v; |
| 1015 | } |
| 1016 | } |
| 1017 | |