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
5 // C++0x [class.access]p4:
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.
12 class Public {} PublicInst;
13 class Protected {} ProtectedInst;
14 class Private {} PrivateInst;
21 void foo(Protected&); // expected-note 2 {{declared protected here}}
23 void foo(Private&); // expected-note 2 {{declared private here}}
28 op->foo(ProtectedInst); // expected-error {{'foo' is a protected member}}
29 op->foo(PrivateInst); // expected-error {{'foo' is a private member}}
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}}
41 void operator+(Public&);
42 void operator[](Public&);
43 void operator()(Public&);
44 typedef void (*PublicSurrogate)(Public&);
45 operator PublicSurrogate() const;
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}}
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}}
60 void operator+(const A &, Public&);
61 void operator+(const A &, Protected&);
62 void operator+(const A &, Private&);
63 void operator-(const A &);
65 void test(A &a, Public &pub, Protected &prot, Private &priv) {
67 a + prot; // expected-error {{'operator+' is a protected member}}
68 a + priv; // expected-error {{'operator+' is a private member}}
70 a[prot]; // expected-error {{'operator[]' is a protected member}}
71 a[priv]; // expected-error {{'operator[]' is a private member}}
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}}
82 // These are all surrogate calls
84 ca(prot); // expected-error {{'operator void (*)(Protected &)' is a protected member}}
85 ca(priv); // expected-error {{'operator void (*)(Private &)' is a private member}}
89 // Implicit constructor calls.
93 A(); // expected-note 1+{{declared private here}}
98 A a; // expected-error {{calling a private constructor}}
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}}
105 class C : virtual A {
110 class D : C { }; // expected-error {{inherited virtual base class 'test2::A' has private default constructor}}
111 D d; // expected-note{{implicit default constructor}}
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}}
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}}
123 D d; // expected-error {{call to implicitly-deleted default constructor}}
127 // Implicit destructor calls.
131 ~A(); // expected-note 2 {{declared private here}}
135 A a; // expected-error {{variable of type 'test3::A' has private destructor}}
138 void foo(A param) { // okay
139 A local; // expected-error {{variable of type 'test3::A' has private destructor}}
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}}
148 // These don't cause diagnostics because we don't need the destructor.
149 class Derived0 : Base<0> { ~Derived0(); };
150 class Derived1 : Base<1> { };
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}}
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}}
170 Derived3 d3; // expected-note {{implicit default constructor}}\
171 // expected-note{{implicit destructor}}}
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(); };
177 // These don't cause diagnostics because we don't need the destructor.
178 class Derived0 : Base<0> { ~Derived0(); };
179 class Derived1 : Base<1> { };
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}}
192 Base<0>, // expected-note {{deleted because base class 'Base<0>' has an inaccessible destructor}}
197 Derived3 d3; // expected-error {{implicitly-deleted default constructor}}
201 // Conversion functions.
205 operator Private(); // expected-note 4 {{declared private here}}
207 operator Public(); // expected-note 2{{member is declared here}}
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; }
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}}
221 class Derived2 : public Base {
222 Private test1() { return *this; } // expected-error {{'operator Private' is a private member}}
223 Public test2() { return *this; }
225 Private test1(Derived2 &d) { return d; } // expected-error {{'operator Private' is a private member}}
226 Public test2(Derived2 &d) { return d; }
228 class Derived3 : private Base { // expected-note {{constrained by private inheritance here}} \
229 // expected-note {{declared private here}}
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}}
237 class Derived4 : public Base {
241 Private test1(Derived4 &d) { return d; }
242 Public test2(Derived4 &d) { return d; }
245 // Implicit copy assignment operator uses.
248 void operator=(const A &);
249 #if __cplusplus < 201103L
250 // expected-note@-2 2{{implicitly declared private here}}
254 #if __cplusplus < 201103L
255 class Test1 { A a; }; // expected-error {{private member}}
258 a = Test1(); // expected-note{{implicit copy}}
261 class Test2 : A {}; // expected-error {{private member}}
264 a = Test2(); // expected-note{{implicit copy}}
267 class Test1 { A a; }; // expected-note {{because field 'a' has an inaccessible copy assignment operator}}
270 a = Test1(); // expected-error {{copy assignment operator is implicitly deleted}}
273 class Test2 : A {}; // expected-note {{because base class 'test5::A' has an inaccessible copy assignment operator}}
276 a = Test2(); // expected-error {{copy assignment operator is implicitly deleted}}
281 // Implicit copy constructor uses.
285 private: A(const A &);
286 #if __cplusplus < 201103L
287 // expected-note@-2 2{{declared private here}}
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}}
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}}
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}}
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}}
314 // Redeclaration lookups are not accesses.
320 int foo(int private_member) {
326 // Ignored operator new and delete overloads are not
328 typedef __typeof__(sizeof(int)) size_t;
331 void *operator new(size_t s);
332 void operator delete(void *p);
334 void *operator new(size_t s, int n);
335 void operator delete(void *p, int n);
343 // Don't silently upgrade forbidden-access paths to private.
346 public: static int x; // expected-note {{member is declared here}}
348 class B : private A { // expected-note {{constrained by private inheritance here}}
351 static int getX() { return x; } // expected-error {{'x' is a private member of 'test9::A'}}
358 value = 10 // expected-note {{declared private here}}
365 value = A::value // expected-error {{'value' is a private member of 'test10::A'}}
378 protected: virtual ~A();
405 unsigned foo() const;
408 struct B : protected A {
420 // Destructors for temporaries.
423 private: ~A(); // expected-note {{declared private here}}
428 foo(); // expected-error {{temporary of type 'test14::A' has private destructor}}
432 ~X(); // expected-note {{declared private here}}
440 const X &xr = Y1(); // expected-error{{temporary of type 'test14::X' has private destructor}}
446 template <class T> class A {
448 int private_foo; // expected-note {{declared private here}}
449 static int private_sfoo; // expected-note {{declared private here}}
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}}
454 int test1(A<int> &a) {
455 return a.private_foo; // expected-error {{private member}}
458 int test2(A<int> &a) {
459 return a.private_sfoo; // expected-error {{private member}}
462 int test3(A<int> &a) {
463 return a.protected_foo; // expected-error {{protected member}}
466 int test4(A<int> &a) {
467 return a.protected_sfoo; // expected-error {{protected member}}
471 template class A<int>;
472 template class A<long>; // expected-note 4 {{in instantiation}}
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.
479 int test1(A<int> &a) {
480 return a.protected_foo; // expected-error 2 {{protected member}}
483 int test2(A<int> &a) {
484 return a.protected_sfoo; // expected-error {{protected member}}
487 int test3(B<int> &b) {
488 return b.protected_foo; // expected-error {{protected member}}
491 int test4(B<int> &b) {
492 return b.protected_sfoo; // expected-error {{protected member}}
496 template class B<int>; // expected-note {{in instantiation}}
497 template class B<long>; // expected-note 4 {{in instantiation}}
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}}
507 // rdar://problem/8146294
510 template <typename T> class Inner { }; // expected-note {{declared private here}}
513 A::Inner<int> s; // expected-error {{'Inner' is a private member of 'test17::A'}}
517 template <class T> class A {};
522 // FIXME: this access to A should be forbidden (because C++ is dumb),
523 // but LookupResult can't express the necessary information to do
524 // the check, so we aggressively suppress access control.
533 // The destructor is not implicitly referenced here. Contrast to test16,
534 // testing PR7281, earlier in this file.
535 void b(A* x) { throw x; }
541 Foo(); // expected-note {{implicitly declared private here}}
546 Foo a; // expected-error {{calling a private constructor}}
551 template <class T> class A {
554 class Inner; // expected-note {{implicitly declared private here}}
558 template <class T> class A<T>::Inner {};
560 template <class T> class A<T>::Inner; // expected-error{{non-friend class member 'Inner' cannot have a qualified name}}
564 A<int>::Inner i; // expected-error {{'Inner' is a private member}}
568 namespace rdar8876150 {
569 struct A { operator bool(); };
570 struct B : private A { using A::operator bool; };
579 template <typename T> class A {
584 template <typename T> A<T> A<T>::instance;
585 template class A<int>;