1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s // RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 %s // RUN: %clang_cc1 -fsyntax-only -verify %s // C++'0x [class.friend] p1: // A friend of a class is a function or class that is given permission to use // the private and protected member names from the class. A class specifies // its friends, if any, by way of friend declarations. Such declarations give // special access rights to the friends, but they do not make the nominated // friends members of the befriending class. struct S { static void f(); }; // expected-note 2 {{'S' declared here}} S* g() { return 0; } struct X { friend struct S; friend S* g(); // expected-note 2 {{'g' declared here}} // FIXME: The above two notes would be better attached to line 11. }; void test1() { S s; g()->f(); S::f(); X::g(); // expected-error{{no member named 'g' in 'X'; did you mean simply 'g'?}} X::S x_s; // expected-error{{no type named 'S' in 'X'; did you mean simply 'S'?}} X x; x.g(); // expected-error{{no member named 'g' in 'X'}} } // Test that we recurse through namespaces to find already declared names, but // new names are declared within the enclosing namespace. namespace N { struct X { friend struct S; friend S* g(); friend struct S2; friend struct S2* g2(); }; struct S2 { static void f2(); }; // expected-note 2 {{'S2' declared here}} S2* g2() { return 0; } // expected-note 2 {{'g2' declared here}} void test() { g()->f(); S s; S::f(); X::g(); // expected-error{{no member named 'g' in 'N::X'; did you mean simply 'g'?}} X::S x_s; // expected-error{{no type named 'S' in 'N::X'; did you mean simply 'S'?}} X x; x.g(); // expected-error{{no member named 'g' in 'N::X'}} g2(); S2 s2; ::g2(); // expected-error{{no member named 'g2' in the global namespace; did you mean simply 'g2'?}} ::S2 g_s2; // expected-error{{no type named 'S2' in the global namespace; did you mean simply 'S2'?}} X::g2(); // expected-error{{no member named 'g2' in 'N::X'; did you mean simply 'g2'?}} X::S2 x_s2; // expected-error{{no type named 'S2' in 'N::X'; did you mean simply 'S2'?}} x.g2(); // expected-error{{no member named 'g2' in 'N::X'}} } } namespace test0 { class ClassFriend { void test(); }; class MemberFriend { public: void test(); }; void declared_test(); class Class { static void member(); // expected-note 2 {{declared private here}} friend class ClassFriend; friend class UndeclaredClassFriend; friend void undeclared_test(); friend void declared_test(); friend void MemberFriend::test(); }; void declared_test() { Class::member(); } void undeclared_test() { Class::member(); } void unfriended_test() { Class::member(); // expected-error {{'member' is a private member of 'test0::Class'}} } void ClassFriend::test() { Class::member(); } void MemberFriend::test() { Class::member(); } class UndeclaredClassFriend { void test() { Class::member(); } }; class ClassNonFriend { void test() { Class::member(); // expected-error {{'member' is a private member of 'test0::Class'}} } }; } // Make sure that friends have access to inherited protected members. namespace test2 { struct X; class ilist_half_node { friend struct ilist_walker_bad; X *Prev; protected: X *getPrev() { return Prev; } // expected-note{{member is declared here}} }; class ilist_node : private ilist_half_node { // expected-note {{declared private here}} expected-note {{constrained by private inheritance here}} friend struct ilist_walker; X *Next; X *getNext() { return Next; } // expected-note {{declared private here}} }; struct X : ilist_node {}; struct ilist_walker { static X *getPrev(X *N) { return N->getPrev(); } static X *getNext(X *N) { return N->getNext(); } }; struct ilist_walker_bad { static X *getPrev(X *N) { return N->getPrev(); } // \ // expected-error {{'getPrev' is a private member of 'test2::ilist_half_node'}} \ // expected-error {{cannot cast 'test2::X' to its private base class 'test2::ilist_half_node'}} static X *getNext(X *N) { return N->getNext(); } // \ // expected-error {{'getNext' is a private member of 'test2::ilist_node'}} }; } namespace test3 { class A { protected: int x; }; // expected-note {{declared protected here}} class B : public A { friend int foo(B*); }; int foo(B *p) { return p->x; } int foo(const B *p) { return p->x; // expected-error {{'x' is a protected member of 'test3::A'}} } } namespace test3a { class A { protected: int x; }; class B : public A { friend int foo(B*); }; int foo(B * const p) { return p->x; } } namespace test4 { template <class T> class Holder { T object; friend bool operator==(Holder &a, Holder &b) { return a.object == b.object; // expected-error {{invalid operands to binary expression}} } }; struct Inequal {}; bool test() { Holder<Inequal> a, b; return a == b; // expected-note {{requested here}} } } // PR6174 namespace test5 { namespace ns { class A; } class ns::A { private: int x; friend class B; }; namespace ns { class B { int test(A *p) { return p->x; } }; } } // PR6207 namespace test6 { struct A {}; struct B { friend #if __cplusplus >= 201103L constexpr #endif A::A(); friend A::~A(); friend #if __cplusplus >= 201402L constexpr #endif A &A::operator=(const A&); }; } namespace test7 { template <class T> struct X { X(); ~X(); void foo(); void bar(); }; class A { friend void X<int>::foo(); friend X<int>::X(); friend #if __cplusplus >= 201103L constexpr #endif X<int>::X(const X&); private: A(); // expected-note 2 {{declared private here}} }; template<> void X<int>::foo() { A a; } template<> void X<int>::bar() { A a; // expected-error {{calling a private constructor}} } template<> X<int>::X() { A a; } template<> X<int>::~X() { A a; // expected-error {{calling a private constructor}} } } // Return types, parameters and default arguments to friend functions. namespace test8 { class A { typedef int I; // expected-note 4 {{declared private here}} static const I x = 0; // expected-note {{implicitly declared private here}} friend I f(I i); template<typename T> friend I g(I i); }; const A::I A::x; A::I f(A::I i = A::x) {} template<typename T> A::I g(A::I i) { T t; } template A::I g<A::I>(A::I i); A::I f2(A::I i = A::x) {} // expected-error 3 {{is a private member of}} template<typename T> A::I g2(A::I i) { // expected-error 2 {{is a private member of}} T t; } template A::I g2<A::I>(A::I i); } // PR6885 namespace test9 { class B { friend class test9; }; } // PR7230 namespace test10 { extern "C" void test10_f(void); extern "C" void test10_g(void); namespace NS { class C { void foo(void); // expected-note {{declared private here}} friend void test10::test10_f(void); }; static C* bar; } void test10_f(void) { NS::bar->foo(); } void test10_g(void) { NS::bar->foo(); // expected-error {{private member}} } } // PR8705 namespace test11 { class A { public: void test0(int); void test1(int); void test2(int); void test3(int); }; class B { typedef int private_type; // expected-note 2 {{implicitly declared private here}} friend void A::test0(int); friend void A::test1(int); }; void A::test0(B::private_type x) {} void A::test1(int x = B::private_type()) {} void A::test2(B::private_type x) {} // expected-error {{'private_type' is a private member of 'test11::B'}} void A::test3(int x = B::private_type()) {} // expected-error {{'private_type' is a private member of 'test11::B'}} } // PR9221 namespace test12 { struct A { void foo(); }; class B : private A { friend void A::foo(); void *mem; }; void A::foo() { void *var = static_cast<B*>(this)->mem; } } namespace PR9103 { struct base { protected: static void foo(void) {} }; struct cls: base { friend void bar(void) { base::foo(); } }; } // PR13642. When computing the effective context, we were walking up // the DC chain for the canonical decl, which is unfortunate if that's // (e.g.) a friend declaration. namespace test14 { class A { class B { // expected-note {{implicitly declared private here}} static int i; friend void c(); }; }; void c() { A::B::i = 5; // expected-error {{'B' is a private member of 'test14::A'}} } } |