| 1 | // RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s |
| 2 | |
| 3 | namespace Test1 { |
| 4 | |
| 5 | struct B { |
| 6 | virtual void f(int); |
| 7 | }; |
| 8 | |
| 9 | struct D : B { |
| 10 | virtual void f(long) override; // expected-error {{'f' marked 'override' but does not override any member functions}} |
| 11 | void f(int) override; |
| 12 | }; |
| 13 | } |
| 14 | |
| 15 | namespace Test2 { |
| 16 | |
| 17 | struct A { |
| 18 | virtual void f(int, char, int); |
| 19 | }; |
| 20 | |
| 21 | template<typename T> |
| 22 | struct B : A { |
| 23 | // FIXME: Diagnose this. |
| 24 | virtual void f(T) override; |
| 25 | }; |
| 26 | |
| 27 | template<typename T> |
| 28 | struct C : A { |
| 29 | virtual void f(int) override; // expected-error {{does not override}} |
| 30 | }; |
| 31 | |
| 32 | } |
| 33 | |
| 34 | namespace Test3 { |
| 35 | |
| 36 | struct A { |
| 37 | virtual void f(int, char, int); |
| 38 | }; |
| 39 | |
| 40 | template<typename... Args> |
| 41 | struct B : A { |
| 42 | virtual void f(Args...) override; // expected-error {{'f' marked 'override' but does not override any member functions}} |
| 43 | }; |
| 44 | |
| 45 | template struct B<int, char, int>; |
| 46 | template struct B<int>; // expected-note {{in instantiation of template class 'Test3::B<int>' requested here}} |
| 47 | |
| 48 | } |
| 49 | |
| 50 | namespace Test4 { |
| 51 | struct B { |
| 52 | virtual void f() const final; // expected-note {{overridden virtual function is here}} |
| 53 | }; |
| 54 | |
| 55 | struct D : B { |
| 56 | void f() const; // expected-error {{declaration of 'f' overrides a 'final' function}} |
| 57 | }; |
| 58 | |
| 59 | } |
| 60 | |
| 61 | namespace PR13499 { |
| 62 | struct X { |
| 63 | virtual void f(); |
| 64 | virtual void h(); |
| 65 | }; |
| 66 | template<typename T> struct A : X { |
| 67 | void f() override; |
| 68 | void h() final; |
| 69 | }; |
| 70 | template<typename T> struct B : X { |
| 71 | void g() override; // expected-error {{only virtual member functions can be marked 'override'}} |
| 72 | void i() final; // expected-error {{only virtual member functions can be marked 'final'}} |
| 73 | }; |
| 74 | B<int> b; // no-note |
| 75 | template<typename T> struct C : T { |
| 76 | void g() override; |
| 77 | void i() final; |
| 78 | }; |
| 79 | template<typename T> struct D : X { |
| 80 | virtual void g() override; // expected-error {{does not override}} |
| 81 | virtual void i() final; |
| 82 | }; |
| 83 | template<typename...T> struct E : X { |
| 84 | void f(T...) override; |
| 85 | void g(T...) override; // expected-error {{only virtual member functions can be marked 'override'}} |
| 86 | void h(T...) final; |
| 87 | void i(T...) final; // expected-error {{only virtual member functions can be marked 'final'}} |
| 88 | }; |
| 89 | // FIXME: Diagnose these in the template definition, not in the instantiation. |
| 90 | E<> e; // expected-note {{in instantiation of}} |
| 91 | |
| 92 | template<typename T> struct Y : T { |
| 93 | void f() override; |
| 94 | void h() final; |
| 95 | }; |
| 96 | template<typename T> struct Z : T { |
| 97 | void g() override; // expected-error {{only virtual member functions can be marked 'override'}} |
| 98 | void i() final; // expected-error {{only virtual member functions can be marked 'final'}} |
| 99 | }; |
| 100 | Y<X> y; |
| 101 | Z<X> z; // expected-note {{in instantiation of}} |
| 102 | } |
| 103 | |
| 104 | namespace MemberOfUnknownSpecialization { |
| 105 | template<typename T> struct A { |
| 106 | struct B {}; |
| 107 | struct C : B { |
| 108 | void f() override; |
| 109 | }; |
| 110 | }; |
| 111 | |
| 112 | template<> struct A<int>::B { |
| 113 | virtual void f(); |
| 114 | }; |
| 115 | // ok |
| 116 | A<int>::C c1; |
| 117 | |
| 118 | template<> struct A<char>::B { |
| 119 | void f(); |
| 120 | }; |
| 121 | // expected-error@-13 {{only virtual member functions can be marked 'override'}} |
| 122 | // expected-note@+1 {{in instantiation of}} |
| 123 | A<char>::C c2; |
| 124 | |
| 125 | template<> struct A<double>::B { |
| 126 | virtual void f() final; |
| 127 | }; |
| 128 | // expected-error@-20 {{declaration of 'f' overrides a 'final' function}} |
| 129 | // expected-note@-3 {{here}} |
| 130 | // expected-note@+1 {{in instantiation of}} |
| 131 | A<double>::C c3; |
| 132 | } |
| 133 | |
| 134 | namespace DiagnosticsQOI { |
| 135 | struct X { |
| 136 | virtual ~X(); |
| 137 | virtual void foo(int x); // expected-note {{hidden overloaded virtual function}} |
| 138 | virtual void bar(int x); // expected-note 2 {{hidden overloaded virtual function}} |
| 139 | virtual void bar(float x); // expected-note 2 {{hidden overloaded virtual function}} |
| 140 | }; |
| 141 | |
| 142 | struct Y : X { |
| 143 | void foo(int x, int y) override; // expected-error {{non-virtual member function marked 'override' hides virtual member function}} |
| 144 | void bar(double) override; // expected-error {{non-virtual member function marked 'override' hides virtual member functions}} |
| 145 | void bar(long double) final; // expected-error {{non-virtual member function marked 'final' hides virtual member functions}} |
| 146 | }; |
| 147 | |
| 148 | template<typename T> |
| 149 | struct Z : T { |
| 150 | static void foo() override; // expected-error {{only virtual member functions can be marked 'override'}} |
| 151 | }; |
| 152 | } |
| 153 | |