| 1 | // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify -std=c++98 %s |
| 2 | // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify -std=c++11 %s |
| 3 | // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify %s |
| 4 | |
| 5 | // C++0x [class.access]p4: |
| 6 | |
| 7 | // Access control is applied uniformly to all names, whether the |
| 8 | // names are referred to from declarations or expressions. In the |
| 9 | // case of overloaded function names, access control is applied to |
| 10 | // the function selected by overload resolution. |
| 11 | |
| 12 | class Public {} PublicInst; |
| 13 | class Protected {} ProtectedInst; |
| 14 | class Private {} PrivateInst; |
| 15 | |
| 16 | namespace test0 { |
| 17 | class A { |
| 18 | public: |
| 19 | void foo(Public&); |
| 20 | protected: |
| 21 | void foo(Protected&); // expected-note 2 {{declared protected here}} |
| 22 | private: |
| 23 | void foo(Private&); // expected-note 2 {{declared private here}} |
| 24 | }; |
| 25 | |
| 26 | void test(A *op) { |
| 27 | op->foo(PublicInst); |
| 28 | op->foo(ProtectedInst); // expected-error {{'foo' is a protected member}} |
| 29 | op->foo(PrivateInst); // expected-error {{'foo' is a private member}} |
| 30 | |
| 31 | void (A::*a)(Public&) = &A::foo; |
| 32 | void (A::*b)(Protected&) = &A::foo; // expected-error {{'foo' is a protected member}} |
| 33 | void (A::*c)(Private&) = &A::foo; // expected-error {{'foo' is a private member}} |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | // Member operators. |
| 38 | namespace test1 { |
| 39 | class A { |
| 40 | public: |
| 41 | void operator+(Public&); |
| 42 | void operator[](Public&); |
| 43 | void operator()(Public&); |
| 44 | typedef void (*PublicSurrogate)(Public&); |
| 45 | operator PublicSurrogate() const; |
| 46 | protected: |
| 47 | void operator+(Protected&); // expected-note {{declared protected here}} |
| 48 | void operator[](Protected&); // expected-note {{declared protected here}} |
| 49 | void operator()(Protected&); // expected-note {{declared protected here}} |
| 50 | typedef void (*ProtectedSurrogate)(Protected&); |
| 51 | operator ProtectedSurrogate() const; // expected-note {{declared protected here}} |
| 52 | private: |
| 53 | void operator+(Private&); // expected-note {{declared private here}} |
| 54 | void operator[](Private&); // expected-note {{declared private here}} |
| 55 | void operator()(Private&); // expected-note {{declared private here}} |
| 56 | void operator-(); // expected-note {{declared private here}} |
| 57 | typedef void (*PrivateSurrogate)(Private&); |
| 58 | operator PrivateSurrogate() const; // expected-note {{declared private here}} |
| 59 | }; |
| 60 | void operator+(const A &, Public&); |
| 61 | void operator+(const A &, Protected&); |
| 62 | void operator+(const A &, Private&); |
| 63 | void operator-(const A &); |
| 64 | |
| 65 | void test(A &a, Public &pub, Protected &prot, Private &priv) { |
| 66 | a + pub; |
| 67 | a + prot; // expected-error {{'operator+' is a protected member}} |
| 68 | a + priv; // expected-error {{'operator+' is a private member}} |
| 69 | a[pub]; |
| 70 | a[prot]; // expected-error {{'operator[]' is a protected member}} |
| 71 | a[priv]; // expected-error {{'operator[]' is a private member}} |
| 72 | a(pub); |
| 73 | a(prot); // expected-error {{'operator()' is a protected member}} |
| 74 | a(priv); // expected-error {{'operator()' is a private member}} |
| 75 | -a; // expected-error {{'operator-' is a private member}} |
| 76 | |
| 77 | const A &ca = a; |
| 78 | ca + pub; |
| 79 | ca + prot; |
| 80 | ca + priv; |
| 81 | -ca; |
| 82 | // These are all surrogate calls |
| 83 | ca(pub); |
| 84 | ca(prot); // expected-error {{'operator void (*)(Protected &)' is a protected member}} |
| 85 | ca(priv); // expected-error {{'operator void (*)(Private &)' is a private member}} |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | // Implicit constructor calls. |
| 90 | namespace test2 { |
| 91 | class A { |
| 92 | private: |
| 93 | A(); // expected-note 1+{{declared private here}} |
| 94 | |
| 95 | static A foo; |
| 96 | }; |
| 97 | |
| 98 | A a; // expected-error {{calling a private constructor}} |
| 99 | A A::foo; // okay |
| 100 | |
| 101 | #if __cplusplus < 201103L |
| 102 | class B : A { }; // expected-error {{base class 'test2::A' has private default constructor}} |
| 103 | B b; // expected-note{{implicit default constructor}} |
| 104 | |
| 105 | class C : virtual A { |
| 106 | public: |
| 107 | C(); |
| 108 | }; |
| 109 | |
| 110 | class D : C { }; // expected-error {{inherited virtual base class 'test2::A' has private default constructor}} |
| 111 | D d; // expected-note{{implicit default constructor}} |
| 112 | #else |
| 113 | class B : A { }; // expected-note {{base class 'test2::A' has an inaccessible default constructor}} |
| 114 | B b; // expected-error {{call to implicitly-deleted default constructor}} |
| 115 | |
| 116 | // FIXME: Do a better job of explaining how we get here from class D. |
| 117 | class C : virtual A { // expected-note {{default constructor of 'D' is implicitly deleted because base class 'test2::A' has an inaccessible default constructor}} |
| 118 | public: |
| 119 | C(); |
| 120 | }; |
| 121 | |
| 122 | class D : C { }; |
| 123 | D d; // expected-error {{call to implicitly-deleted default constructor}} |
| 124 | #endif |
| 125 | } |
| 126 | |
| 127 | // Implicit destructor calls. |
| 128 | namespace test3 { |
| 129 | class A { |
| 130 | private: |
| 131 | ~A(); // expected-note 2 {{declared private here}} |
| 132 | static A foo; |
| 133 | }; |
| 134 | |
| 135 | A a; // expected-error {{variable of type 'test3::A' has private destructor}} |
| 136 | A A::foo; |
| 137 | |
| 138 | void foo(A param) { // okay |
| 139 | A local; // expected-error {{variable of type 'test3::A' has private destructor}} |
| 140 | } |
| 141 | |
| 142 | #if __cplusplus < 201103L |
| 143 | template <unsigned N> class Base { ~Base(); }; // expected-note 14 {{declared private here}} |
| 144 | class Base2 : virtual Base<2> { ~Base2(); }; // expected-note 3 {{declared private here}} \ |
| 145 | // expected-error {{base class 'Base<2>' has private destructor}} |
| 146 | class Base3 : virtual Base<3> { public: ~Base3(); }; // expected-error {{base class 'Base<3>' has private destructor}} |
| 147 | |
| 148 | // These don't cause diagnostics because we don't need the destructor. |
| 149 | class Derived0 : Base<0> { ~Derived0(); }; |
| 150 | class Derived1 : Base<1> { }; |
| 151 | |
| 152 | class Derived2 : // expected-error {{inherited virtual base class 'Base<2>' has private destructor}} \ |
| 153 | // expected-error {{inherited virtual base class 'Base<3>' has private destructor}} |
| 154 | Base<0>, // expected-error {{base class 'Base<0>' has private destructor}} |
| 155 | virtual Base<1>, // expected-error {{base class 'Base<1>' has private destructor}} |
| 156 | Base2, // expected-error {{base class 'test3::Base2' has private destructor}} |
| 157 | virtual Base3 |
| 158 | { |
| 159 | ~Derived2() {} |
| 160 | }; |
| 161 | |
| 162 | class Derived3 : // expected-error 2 {{inherited virtual base class 'Base<2>' has private destructor}} \ |
| 163 | // expected-error 2 {{inherited virtual base class 'Base<3>' has private destructor}} \ |
| 164 | // expected-note 2{{implicit default constructor}} |
| 165 | Base<0>, // expected-error 2 {{base class 'Base<0>' has private destructor}} |
| 166 | virtual Base<1>, // expected-error 2 {{base class 'Base<1>' has private destructor}} |
| 167 | Base2, // expected-error 2 {{base class 'test3::Base2' has private destructor}} |
| 168 | virtual Base3 |
| 169 | {}; |
| 170 | Derived3 d3; // expected-note 3{{implicit default constructor}}\ |
| 171 | // expected-note{{implicit destructor}}} |
| 172 | #else |
| 173 | template <unsigned N> class Base { ~Base(); }; // expected-note 4{{declared private here}} |
| 174 | class Base2 : virtual Base<2> { ~Base2(); }; // expected-note 1{{declared private here}} |
| 175 | class Base3 : virtual Base<3> { public: ~Base3(); }; |
| 176 | |
| 177 | // These don't cause diagnostics because we don't need the destructor. |
| 178 | class Derived0 : Base<0> { ~Derived0(); }; |
| 179 | class Derived1 : Base<1> { }; |
| 180 | |
| 181 | class Derived2 : // expected-error {{inherited virtual base class 'Base<2>' has private destructor}} \ |
| 182 | // expected-error {{inherited virtual base class 'Base<3>' has private destructor}} |
| 183 | Base<0>, // expected-error {{base class 'Base<0>' has private destructor}} |
| 184 | virtual Base<1>, // expected-error {{base class 'Base<1>' has private destructor}} |
| 185 | Base2, // expected-error {{base class 'test3::Base2' has private destructor}} |
| 186 | virtual Base3 |
| 187 | { |
| 188 | ~Derived2() {} |
| 189 | }; |
| 190 | |
| 191 | class Derived3 : |
| 192 | Base<0>, // expected-note {{deleted because base class 'Base<0>' has an inaccessible destructor}} |
| 193 | virtual Base<1>, |
| 194 | Base2, |
| 195 | virtual Base3 |
| 196 | {}; |
| 197 | Derived3 d3; // expected-error {{implicitly-deleted default constructor}} |
| 198 | #endif |
| 199 | } |
| 200 | |
| 201 | // Conversion functions. |
| 202 | namespace test4 { |
| 203 | class Base { |
| 204 | private: |
| 205 | operator Private(); // expected-note 4 {{declared private here}} |
| 206 | public: |
| 207 | operator Public(); // expected-note 2{{member is declared here}} |
| 208 | }; |
| 209 | |
| 210 | class Derived1 : private Base { // expected-note 2 {{declared private here}} \ |
| 211 | // expected-note {{constrained by private inheritance}} |
| 212 | Private test1() { return *this; } // expected-error {{'operator Private' is a private member}} |
| 213 | Public test2() { return *this; } |
| 214 | }; |
| 215 | Private test1(Derived1 &d) { return d; } // expected-error {{'operator Private' is a private member}} \ |
| 216 | // expected-error {{cannot cast 'test4::Derived1' to its private base class}} |
| 217 | Public test2(Derived1 &d) { return d; } // expected-error {{cannot cast 'test4::Derived1' to its private base class}} \ |
| 218 | // expected-error {{'operator Public' is a private member}} |
| 219 | |
| 220 | |
| 221 | class Derived2 : public Base { |
| 222 | Private test1() { return *this; } // expected-error {{'operator Private' is a private member}} |
| 223 | Public test2() { return *this; } |
| 224 | }; |
| 225 | Private test1(Derived2 &d) { return d; } // expected-error {{'operator Private' is a private member}} |
| 226 | Public test2(Derived2 &d) { return d; } |
| 227 | |
| 228 | class Derived3 : private Base { // expected-note {{constrained by private inheritance here}} \ |
| 229 | // expected-note {{declared private here}} |
| 230 | public: |
| 231 | operator Private(); |
| 232 | }; |
| 233 | Private test1(Derived3 &d) { return d; } |
| 234 | Public test2(Derived3 &d) { return d; } // expected-error {{'operator Public' is a private member of 'test4::Base'}} \ |
| 235 | // expected-error {{cannot cast 'test4::Derived3' to its private base class}} |
| 236 | |
| 237 | class Derived4 : public Base { |
| 238 | public: |
| 239 | operator Private(); |
| 240 | }; |
| 241 | Private test1(Derived4 &d) { return d; } |
| 242 | Public test2(Derived4 &d) { return d; } |
| 243 | } |
| 244 | |
| 245 | // Implicit copy assignment operator uses. |
| 246 | namespace test5 { |
| 247 | class A { |
| 248 | void operator=(const A &); |
| 249 | #if __cplusplus < 201103L |
| 250 | // expected-note@-2 2{{implicitly declared private here}} |
| 251 | #endif |
| 252 | }; |
| 253 | |
| 254 | #if __cplusplus < 201103L |
| 255 | class Test1 { A a; }; // expected-error {{private member}} |
| 256 | void test1() { |
| 257 | Test1 a; |
| 258 | a = Test1(); // expected-note{{implicit copy}} |
| 259 | } |
| 260 | |
| 261 | class Test2 : A {}; // expected-error {{private member}} |
| 262 | void test2() { |
| 263 | Test2 a; |
| 264 | a = Test2(); // expected-note{{implicit copy}} |
| 265 | } |
| 266 | #else |
| 267 | class Test1 { A a; }; // expected-note {{because field 'a' has an inaccessible copy assignment operator}} |
| 268 | void test1() { |
| 269 | Test1 a; |
| 270 | a = Test1(); // expected-error {{copy assignment operator is implicitly deleted}} |
| 271 | } |
| 272 | |
| 273 | class Test2 : A {}; // expected-note {{because base class 'test5::A' has an inaccessible copy assignment operator}} |
| 274 | void test2() { |
| 275 | Test2 a; |
| 276 | a = Test2(); // expected-error {{copy assignment operator is implicitly deleted}} |
| 277 | } |
| 278 | #endif |
| 279 | } |
| 280 | |
| 281 | // Implicit copy constructor uses. |
| 282 | namespace test6 { |
| 283 | class A { |
| 284 | public: A(); |
| 285 | private: A(const A &); |
| 286 | #if __cplusplus < 201103L |
| 287 | // expected-note@-2 2{{declared private here}} |
| 288 | #endif |
| 289 | }; |
| 290 | |
| 291 | #if __cplusplus < 201103L |
| 292 | class Test1 { A a; }; // expected-error {{field of type 'test6::A' has private copy constructor}} |
| 293 | void test1(const Test1 &t) { |
| 294 | Test1 a = t; // expected-note{{implicit copy}} |
| 295 | } |
| 296 | |
| 297 | class Test2 : A {}; // expected-error {{base class 'test6::A' has private copy constructor}} |
| 298 | void test2(const Test2 &t) { |
| 299 | Test2 a = t; // expected-note{{implicit copy}} |
| 300 | } |
| 301 | #else |
| 302 | class Test1 { A a; }; // expected-note {{field 'a' has an inaccessible copy constructor}} |
| 303 | void test1(const Test1 &t) { |
| 304 | Test1 a = t; // expected-error{{implicitly-deleted}} |
| 305 | } |
| 306 | |
| 307 | class Test2 : A {}; // expected-note {{base class 'test6::A' has an inaccessible copy constructor}} |
| 308 | void test2(const Test2 &t) { |
| 309 | Test2 a = t; // expected-error{{implicitly-deleted}} |
| 310 | } |
| 311 | #endif |
| 312 | } |
| 313 | |
| 314 | // Redeclaration lookups are not accesses. |
| 315 | namespace test7 { |
| 316 | class A { |
| 317 | int private_member; |
| 318 | }; |
| 319 | class B : A { |
| 320 | int foo(int private_member) { |
| 321 | return 0; |
| 322 | } |
| 323 | }; |
| 324 | } |
| 325 | |
| 326 | // Ignored operator new and delete overloads are not |
| 327 | namespace test8 { |
| 328 | typedef __typeof__(sizeof(int)) size_t; |
| 329 | |
| 330 | class A { |
| 331 | void *operator new(size_t s); |
| 332 | void operator delete(void *p); |
| 333 | public: |
| 334 | void *operator new(size_t s, int n); |
| 335 | void operator delete(void *p, int n); |
| 336 | }; |
| 337 | |
| 338 | void test() { |
| 339 | new (2) A(); |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | // Don't silently upgrade forbidden-access paths to private. |
| 344 | namespace test9 { |
| 345 | class A { |
| 346 | public: static int x; // expected-note {{member is declared here}} |
| 347 | }; |
| 348 | class B : private A { // expected-note {{constrained by private inheritance here}} |
| 349 | }; |
| 350 | class C : public B { |
| 351 | static int getX() { return x; } // expected-error {{'x' is a private member of 'test9::A'}} |
| 352 | }; |
| 353 | } |
| 354 | |
| 355 | namespace test10 { |
| 356 | class A { |
| 357 | enum { |
| 358 | value = 10 // expected-note {{declared private here}} |
| 359 | }; |
| 360 | friend class C; |
| 361 | }; |
| 362 | |
| 363 | class B { |
| 364 | enum { |
| 365 | value = A::value // expected-error {{'value' is a private member of 'test10::A'}} |
| 366 | }; |
| 367 | }; |
| 368 | |
| 369 | class C { |
| 370 | enum { |
| 371 | value = A::value |
| 372 | }; |
| 373 | }; |
| 374 | } |
| 375 | |
| 376 | namespace test11 { |
| 377 | class A { |
| 378 | protected: virtual ~A(); |
| 379 | }; |
| 380 | |
| 381 | class B : public A { |
| 382 | ~B(); |
| 383 | }; |
| 384 | |
| 385 | B::~B() {}; |
| 386 | } |
| 387 | |
| 388 | namespace test12 { |
| 389 | class A { |
| 390 | int x; |
| 391 | |
| 392 | void foo() { |
| 393 | class Local { |
| 394 | int foo(A *a) { |
| 395 | return a->x; |
| 396 | } |
| 397 | }; |
| 398 | } |
| 399 | }; |
| 400 | } |
| 401 | |
| 402 | namespace test13 { |
| 403 | struct A { |
| 404 | int x; |
| 405 | unsigned foo() const; |
| 406 | }; |
| 407 | |
| 408 | struct B : protected A { |
| 409 | using A::foo; |
| 410 | using A::x; |
| 411 | }; |
| 412 | |
| 413 | void test() { |
| 414 | A *d; |
| 415 | d->foo(); |
| 416 | (void) d->x; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | // Destructors for temporaries. |
| 421 | namespace test14 { |
| 422 | class A { |
| 423 | private: ~A(); // expected-note {{declared private here}} |
| 424 | }; |
| 425 | A foo(); |
| 426 | |
| 427 | void test() { |
| 428 | foo(); // expected-error {{temporary of type 'test14::A' has private destructor}} |
| 429 | } |
| 430 | |
| 431 | class X { |
| 432 | ~X(); // expected-note {{declared private here}} |
| 433 | }; |
| 434 | |
| 435 | struct Y1 { |
| 436 | operator X(); |
| 437 | }; |
| 438 | |
| 439 | void g() { |
| 440 | const X &xr = Y1(); // expected-error{{temporary of type 'test14::X' has private destructor}} |
| 441 | } |
| 442 | } |
| 443 | |
| 444 | // PR 7024 |
| 445 | namespace test15 { |
| 446 | template <class T> class A { |
| 447 | private: |
| 448 | int private_foo; // expected-note {{declared private here}} |
| 449 | static int private_sfoo; // expected-note {{declared private here}} |
| 450 | protected: |
| 451 | int protected_foo; // expected-note 3 {{declared protected here}} // expected-note {{can only access this member on an object of type 'test15::B<int>'}} |
| 452 | static int protected_sfoo; // expected-note 3 {{declared protected here}} |
| 453 | |
| 454 | int test1(A<int> &a) { |
| 455 | return a.private_foo; // expected-error {{private member}} |
| 456 | } |
| 457 | |
| 458 | int test2(A<int> &a) { |
| 459 | return a.private_sfoo; // expected-error {{private member}} |
| 460 | } |
| 461 | |
| 462 | int test3(A<int> &a) { |
| 463 | return a.protected_foo; // expected-error {{protected member}} |
| 464 | } |
| 465 | |
| 466 | int test4(A<int> &a) { |
| 467 | return a.protected_sfoo; // expected-error {{protected member}} |
| 468 | } |
| 469 | }; |
| 470 | |
| 471 | template class A<int>; |
| 472 | template class A<long>; // expected-note 4 {{in instantiation}} |
| 473 | |
| 474 | template <class T> class B : public A<T> { |
| 475 | // TODO: These first two accesses can be detected as ill-formed at |
| 476 | // definition time because they're member accesses and A<int> can't |
| 477 | // be a subclass of B<T> for any T. |
| 478 | |
| 479 | int test1(A<int> &a) { |
| 480 | return a.protected_foo; // expected-error 2 {{protected member}} |
| 481 | } |
| 482 | |
| 483 | int test2(A<int> &a) { |
| 484 | return a.protected_sfoo; // expected-error {{protected member}} |
| 485 | } |
| 486 | |
| 487 | int test3(B<int> &b) { |
| 488 | return b.protected_foo; // expected-error {{protected member}} |
| 489 | } |
| 490 | |
| 491 | int test4(B<int> &b) { |
| 492 | return b.protected_sfoo; // expected-error {{protected member}} |
| 493 | } |
| 494 | }; |
| 495 | |
| 496 | template class B<int>; // expected-note {{in instantiation}} |
| 497 | template class B<long>; // expected-note 4 {{in instantiation}} |
| 498 | } |
| 499 | |
| 500 | // PR7281 |
| 501 | namespace test16 { |
| 502 | class A { ~A(); }; // expected-note 2{{declared private here}} |
| 503 | void b() { throw A(); } // expected-error{{temporary of type 'test16::A' has private destructor}} \ |
| 504 | // expected-error{{exception object of type 'test16::A' has private destructor}} |
| 505 | } |
| 506 | |
| 507 | // rdar://problem/8146294 |
| 508 | namespace test17 { |
| 509 | class A { |
| 510 | template <typename T> class Inner { }; // expected-note {{declared private here}} |
| 511 | }; |
| 512 | |
| 513 | A::Inner<int> s; // expected-error {{'Inner' is a private member of 'test17::A'}} |
| 514 | } |
| 515 | |
| 516 | namespace test18 { |
| 517 | template <class T> class A {}; // expected-note {{member is declared here}} |
| 518 | class B : A<int> { // expected-note {{constrained by implicitly private inheritance here}} |
| 519 | A<int> member; |
| 520 | }; |
| 521 | class C : B { |
| 522 | A<int> member; // expected-error {{'A' is a private member of 'test18::A<int>'}} |
| 523 | }; |
| 524 | } |
| 525 | |
| 526 | // PR8325 |
| 527 | namespace test19 { |
| 528 | class A { ~A(); }; |
| 529 | // The destructor is not implicitly referenced here. Contrast to test16, |
| 530 | // testing PR7281, earlier in this file. |
| 531 | void b(A* x) { throw x; } |
| 532 | } |
| 533 | |
| 534 | // PR7930 |
| 535 | namespace test20 { |
| 536 | class Foo { |
| 537 | Foo(); // expected-note {{implicitly declared private here}} |
| 538 | }; |
| 539 | Foo::Foo() {} |
| 540 | |
| 541 | void test() { |
| 542 | Foo a; // expected-error {{calling a private constructor}} |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | namespace test21 { |
| 547 | template <class T> class A { |
| 548 | void foo(); |
| 549 | void bar(); |
| 550 | class Inner; // expected-note {{implicitly declared private here}} |
| 551 | public: |
| 552 | void baz(); |
| 553 | }; |
| 554 | template <class T> class A<T>::Inner {}; |
| 555 | class B { |
| 556 | template <class T> class A<T>::Inner; // expected-error{{non-friend class member 'Inner' cannot have a qualified name}} |
| 557 | }; |
| 558 | |
| 559 | void test() { |
| 560 | A<int>::Inner i; // expected-error {{'Inner' is a private member}} |
| 561 | } |
| 562 | } |
| 563 | |
| 564 | namespace rdar8876150 { |
| 565 | struct A { operator bool(); }; |
| 566 | struct B : private A { using A::operator bool; }; |
| 567 | |
| 568 | bool f() { |
| 569 | B b; |
| 570 | return !b; |
| 571 | } |
| 572 | } |
| 573 | |
| 574 | namespace test23 { |
| 575 | template <typename T> class A { |
| 576 | A(); |
| 577 | static A instance; |
| 578 | }; |
| 579 | |
| 580 | template <typename T> A<T> A<T>::instance; |
| 581 | template class A<int>; |
| 582 | } |
| 583 | |