| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
|---|
| 2 | |
|---|
| 3 | struct Base { |
|---|
| 4 | int data; |
|---|
| 5 | int method(); |
|---|
| 6 | }; |
|---|
| 7 | int (Base::*data_ptr) = &Base::data; |
|---|
| 8 | int (Base::*method_ptr)() = &Base::method; |
|---|
| 9 | |
|---|
| 10 | namespace test0 { |
|---|
| 11 | struct Derived : Base {}; |
|---|
| 12 | void test() { |
|---|
| 13 | int (Derived::*d) = data_ptr; |
|---|
| 14 | int (Derived::*m)() = method_ptr; |
|---|
| 15 | } |
|---|
| 16 | } |
|---|
| 17 | |
|---|
| 18 | // Can't be inaccessible. |
|---|
| 19 | namespace test1 { |
|---|
| 20 | struct Derived : private Base {}; // expected-note 2 {{declared private here}} |
|---|
| 21 | void test() { |
|---|
| 22 | int (Derived::*d) = data_ptr; // expected-error {{cannot cast private base class 'Base' to 'test1::Derived'}} |
|---|
| 23 | int (Derived::*m)() = method_ptr; // expected-error {{cannot cast private base class 'Base' to 'test1::Derived'}} |
|---|
| 24 | } |
|---|
| 25 | }; |
|---|
| 26 | |
|---|
| 27 | // Can't be ambiguous. |
|---|
| 28 | namespace test2 { |
|---|
| 29 | struct A : Base {}; |
|---|
| 30 | struct B : Base {}; |
|---|
| 31 | struct Derived : A, B {}; |
|---|
| 32 | void test() { |
|---|
| 33 | int (Derived::*d) = data_ptr; // expected-error {{ambiguous conversion from pointer to member of base class 'Base' to pointer to member of derived class 'test2::Derived':}} |
|---|
| 34 | int (Derived::*m)() = method_ptr; // expected-error {{ambiguous conversion from pointer to member of base class 'Base' to pointer to member of derived class 'test2::Derived':}} |
|---|
| 35 | } |
|---|
| 36 | } |
|---|
| 37 | |
|---|
| 38 | // Can't be virtual. |
|---|
| 39 | namespace test3 { |
|---|
| 40 | struct Derived : virtual Base {}; |
|---|
| 41 | void test() { |
|---|
| 42 | int (Derived::*d) = data_ptr; // expected-error {{conversion from pointer to member of class 'Base' to pointer to member of class 'test3::Derived' via virtual base 'Base' is not allowed}} |
|---|
| 43 | int (Derived::*m)() = method_ptr; // expected-error {{conversion from pointer to member of class 'Base' to pointer to member of class 'test3::Derived' via virtual base 'Base' is not allowed}} |
|---|
| 44 | } |
|---|
| 45 | } |
|---|
| 46 | |
|---|
| 47 | // Can't be virtual even if there's a non-virtual path. |
|---|
| 48 | namespace test4 { |
|---|
| 49 | struct A : Base {}; |
|---|
| 50 | struct Derived : Base, virtual A {}; // expected-warning {{direct base 'Base' is inaccessible due to ambiguity:\n struct test4::Derived -> struct Base\n struct test4::Derived -> struct test4::A -> struct Base}} |
|---|
| 51 | void test() { |
|---|
| 52 | int (Derived::*d) = data_ptr; // expected-error {{ambiguous conversion from pointer to member of base class 'Base' to pointer to member of derived class 'test4::Derived':}} |
|---|
| 53 | int (Derived::*m)() = method_ptr; // expected-error {{ambiguous conversion from pointer to member of base class 'Base' to pointer to member of derived class 'test4::Derived':}} |
|---|
| 54 | } |
|---|
| 55 | } |
|---|
| 56 | |
|---|
| 57 | // PR6254: don't get thrown off by a virtual base. |
|---|
| 58 | namespace test5 { |
|---|
| 59 | struct A {}; |
|---|
| 60 | struct Derived : Base, virtual A {}; |
|---|
| 61 | void test() { |
|---|
| 62 | int (Derived::*d) = data_ptr; |
|---|
| 63 | int (Derived::*m)() = method_ptr; |
|---|
| 64 | } |
|---|
| 65 | } |
|---|
| 66 | |
|---|