| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
| 2 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s |
| 3 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
| 4 | |
| 5 | class Base { // expected-warning{{class 'Base' does not declare any constructor to initialize its non-modifiable members}} |
| 6 | #if __cplusplus <= 199711L |
| 7 | // expected-error@-2 {{cannot define the implicit copy assignment operator for 'Base', because non-static reference member 'ref' cannot use copy assignment operator}} |
| 8 | #endif |
| 9 | |
| 10 | int &ref; // expected-note{{reference member 'ref' will never be initialized}} |
| 11 | #if __cplusplus <= 199711L |
| 12 | // expected-note@-2 {{declared here}} |
| 13 | #else |
| 14 | // expected-note@-4 2 {{copy assignment operator of 'Base' is implicitly deleted because field 'ref' is of reference type 'int &'}} |
| 15 | #endif |
| 16 | }; |
| 17 | |
| 18 | class X : Base { |
| 19 | #if __cplusplus <= 199711L |
| 20 | // expected-note@-2 {{assignment operator for 'Base' first required here}} |
| 21 | // expected-error@-3 {{cannot define the implicit copy assignment operator for 'X', because non-static const member 'cint' cannot use copy assignment operator}} |
| 22 | #else |
| 23 | // expected-note@-5 2 {{copy assignment operator of 'X' is implicitly deleted because base class 'Base' has a deleted copy assignment operator}} |
| 24 | #endif |
| 25 | |
| 26 | public: |
| 27 | X(); |
| 28 | const int cint; |
| 29 | #if __cplusplus <= 199711L |
| 30 | // expected-note@-2 {{declared here}} |
| 31 | #endif |
| 32 | }; |
| 33 | |
| 34 | struct Y : X { |
| 35 | Y(); |
| 36 | Y& operator=(const Y&); |
| 37 | Y& operator=(volatile Y&); |
| 38 | Y& operator=(const volatile Y&); |
| 39 | Y& operator=(Y&); |
| 40 | }; |
| 41 | |
| 42 | class Z : Y {}; |
| 43 | |
| 44 | Z z1; |
| 45 | Z z2; |
| 46 | |
| 47 | // Test1 |
| 48 | void f(X x, const X cx) { |
| 49 | x = cx; |
| 50 | #if __cplusplus <= 199711L |
| 51 | // expected-note@-2 2{{assignment operator for 'X' first required here}} |
| 52 | #else |
| 53 | // expected-error@-4 {{object of type 'X' cannot be assigned because its copy assignment operator is implicitly deleted}} |
| 54 | #endif |
| 55 | |
| 56 | x = cx; |
| 57 | #if __cplusplus >= 201103L |
| 58 | // expected-error@-2 {{object of type 'X' cannot be assigned because its copy assignment operator is implicitly deleted}} |
| 59 | #endif |
| 60 | z1 = z2; |
| 61 | } |
| 62 | |
| 63 | // Test2 |
| 64 | class T {}; |
| 65 | T t1; |
| 66 | T t2; |
| 67 | |
| 68 | void g() { |
| 69 | t1 = t2; |
| 70 | } |
| 71 | |
| 72 | // Test3 |
| 73 | class V { |
| 74 | public: |
| 75 | V(); |
| 76 | V &operator = (V &b); |
| 77 | }; |
| 78 | |
| 79 | class W : V {}; |
| 80 | W w1, w2; |
| 81 | |
| 82 | void h() { |
| 83 | w1 = w2; |
| 84 | } |
| 85 | |
| 86 | // Test4 |
| 87 | |
| 88 | class B1 { |
| 89 | public: |
| 90 | B1(); |
| 91 | B1 &operator = (B1 b); |
| 92 | }; |
| 93 | |
| 94 | class D1 : B1 {}; |
| 95 | D1 d1, d2; |
| 96 | |
| 97 | void i() { |
| 98 | d1 = d2; |
| 99 | } |
| 100 | |
| 101 | // Test5 |
| 102 | |
| 103 | class E1 { |
| 104 | #if __cplusplus <= 199711L |
| 105 | // expected-error@-2 {{cannot define the implicit copy assignment operator for 'E1', because non-static const member 'a' cannot use copy assignment operator}} |
| 106 | #endif |
| 107 | |
| 108 | public: |
| 109 | const int a; |
| 110 | #if __cplusplus <= 199711L |
| 111 | // expected-note@-2 {{declared here}} |
| 112 | #else |
| 113 | // expected-note@-4 {{copy assignment operator of 'E1' is implicitly deleted because field 'a' is of const-qualified type 'const int'}} |
| 114 | #endif |
| 115 | E1() : a(0) {} |
| 116 | |
| 117 | }; |
| 118 | |
| 119 | E1 e1, e2; |
| 120 | |
| 121 | void j() { |
| 122 | e1 = e2; |
| 123 | #if __cplusplus <= 199711L |
| 124 | // expected-note@-2 {{assignment operator for 'E1' first required here}} |
| 125 | #else |
| 126 | // expected-error@-4 {{object of type 'E1' cannot be assigned because its copy assignment operator is implicitly deleted}} |
| 127 | #endif |
| 128 | } |
| 129 | |
| 130 | namespace ProtectedCheck { |
| 131 | struct X { |
| 132 | protected: |
| 133 | X &operator=(const X&); |
| 134 | #if __cplusplus <= 199711L |
| 135 | // expected-note@-2 {{declared protected here}} |
| 136 | #endif |
| 137 | }; |
| 138 | |
| 139 | struct Y : public X { }; |
| 140 | |
| 141 | void f(Y y) { y = y; } |
| 142 | |
| 143 | struct Z { |
| 144 | #if __cplusplus <= 199711L |
| 145 | // expected-error@-2 {{'operator=' is a protected member of 'ProtectedCheck::X'}} |
| 146 | #endif |
| 147 | X x; |
| 148 | #if __cplusplus >= 201103L |
| 149 | // expected-note@-2 {{copy assignment operator of 'Z' is implicitly deleted because field 'x' has an inaccessible copy assignment operator}} |
| 150 | #endif |
| 151 | }; |
| 152 | |
| 153 | void f(Z z) { z = z; } |
| 154 | #if __cplusplus <= 199711L |
| 155 | // expected-note@-2 {{implicit copy assignment operator}} |
| 156 | #else |
| 157 | // expected-error@-4 {{object of type 'ProtectedCheck::Z' cannot be assigned because its copy assignment operator is implicitly deleted}} |
| 158 | #endif |
| 159 | } |
| 160 | |
| 161 | namespace MultiplePaths { |
| 162 | struct X0 { |
| 163 | X0 &operator=(const X0&); |
| 164 | }; |
| 165 | |
| 166 | struct X1 : public virtual X0 { }; |
| 167 | |
| 168 | struct X2 : X0, X1 { }; // expected-warning{{direct base 'MultiplePaths::X0' is inaccessible due to ambiguity:\n struct MultiplePaths::X2 -> struct MultiplePaths::X0\n struct MultiplePaths::X2 -> struct MultiplePaths::X1 -> struct MultiplePaths::X0}} |
| 169 | |
| 170 | void f(X2 x2) { x2 = x2; } |
| 171 | } |
| 172 | |