| 1 | // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s |
| 2 | |
| 3 | struct non_copiable { |
| 4 | non_copiable(const non_copiable&) = delete; // expected-note {{marked deleted here}} |
| 5 | non_copiable& operator = (const non_copiable&) = delete; // expected-note {{explicitly deleted}} |
| 6 | non_copiable() = default; |
| 7 | }; |
| 8 | |
| 9 | struct non_const_copy { |
| 10 | non_const_copy(non_const_copy&); |
| 11 | non_const_copy& operator = (non_const_copy&) &; |
| 12 | non_const_copy& operator = (non_const_copy&) &&; |
| 13 | non_const_copy() = default; // expected-note {{not viable}} |
| 14 | int uninit_field; |
| 15 | }; |
| 16 | non_const_copy::non_const_copy(non_const_copy&) = default; // expected-note {{not viable}} |
| 17 | non_const_copy& non_const_copy::operator = (non_const_copy&) & = default; // expected-note {{not viable}} |
| 18 | non_const_copy& non_const_copy::operator = (non_const_copy&) && = default; // expected-note {{not viable}} |
| 19 | |
| 20 | void fn1 () { |
| 21 | non_copiable nc; |
| 22 | non_copiable nc2 = nc; // expected-error {{deleted constructor}} |
| 23 | nc = nc; // expected-error {{deleted operator}} |
| 24 | |
| 25 | non_const_copy ncc; |
| 26 | non_const_copy ncc2 = ncc; |
| 27 | ncc = ncc2; |
| 28 | const non_const_copy cncc{}; |
| 29 | const non_const_copy cncc1; // expected-error {{default initialization of an object of const type 'const non_const_copy' without a user-provided default constructor}} |
| 30 | non_const_copy ncc3 = cncc; // expected-error {{no matching}} |
| 31 | ncc = cncc; // expected-error {{no viable overloaded}} |
| 32 | }; |
| 33 | |
| 34 | struct no_fields { }; |
| 35 | struct all_init { |
| 36 | int a = 0; |
| 37 | int b = 0; |
| 38 | }; |
| 39 | struct some_init { |
| 40 | int a = 0; |
| 41 | int b; |
| 42 | int c = 0; |
| 43 | }; |
| 44 | struct some_init_mutable { |
| 45 | int a = 0; |
| 46 | mutable int b; |
| 47 | int c = 0; |
| 48 | }; |
| 49 | struct some_init_def { |
| 50 | some_init_def() = default; |
| 51 | int a = 0; |
| 52 | int b; |
| 53 | int c = 0; |
| 54 | }; |
| 55 | struct some_init_ctor { |
| 56 | some_init_ctor(); |
| 57 | int a = 0; |
| 58 | int b; |
| 59 | int c = 0; |
| 60 | }; |
| 61 | struct sub_some_init : public some_init_def { }; |
| 62 | struct sub_some_init_ctor : public some_init_def { |
| 63 | sub_some_init_ctor(); |
| 64 | }; |
| 65 | struct sub_some_init_ctor2 : public some_init_ctor { |
| 66 | }; |
| 67 | struct some_init_container { |
| 68 | some_init_def sid; |
| 69 | }; |
| 70 | struct some_init_container_ctor { |
| 71 | some_init_container_ctor(); |
| 72 | some_init_def sid; |
| 73 | }; |
| 74 | struct no_fields_container { |
| 75 | no_fields nf; |
| 76 | }; |
| 77 | struct param_pack_ctor { |
| 78 | template <typename... T> |
| 79 | param_pack_ctor(T...); |
| 80 | int n; |
| 81 | }; |
| 82 | struct param_pack_ctor_field { |
| 83 | param_pack_ctor ndc; |
| 84 | }; |
| 85 | struct multi_param_pack_ctor { |
| 86 | template <typename... T, typename... U> |
| 87 | multi_param_pack_ctor(T..., U..., int f = 0); |
| 88 | int n; |
| 89 | }; |
| 90 | struct ignored_template_ctor_and_def { |
| 91 | template <class T> ignored_template_ctor_and_def(T* f = nullptr); |
| 92 | ignored_template_ctor_and_def() = default; |
| 93 | int field; |
| 94 | }; |
| 95 | template<bool, typename = void> struct enable_if {}; |
| 96 | template<typename T> struct enable_if<true, T> { typedef T type; }; |
| 97 | struct multi_param_pack_and_defaulted { |
| 98 | template <typename... T, |
| 99 | typename enable_if<sizeof...(T) != 0>::type* = nullptr> |
| 100 | multi_param_pack_and_defaulted(T...); |
| 101 | multi_param_pack_and_defaulted() = default; |
| 102 | int n; |
| 103 | }; |
| 104 | |
| 105 | void constobjs() { |
| 106 | const no_fields nf; // ok |
| 107 | const all_init ai; // ok |
| 108 | const some_init si; // expected-error {{default initialization of an object of const type 'const some_init' without a user-provided default constructor}} |
| 109 | const some_init_mutable sim; // ok |
| 110 | const some_init_def sid; // expected-error {{default initialization of an object of const type 'const some_init_def' without a user-provided default constructor}} |
| 111 | const some_init_ctor sic; // ok |
| 112 | const sub_some_init ssi; // expected-error {{default initialization of an object of const type 'const sub_some_init' without a user-provided default constructor}} |
| 113 | const sub_some_init_ctor ssic; // ok |
| 114 | const sub_some_init_ctor2 ssic2; // ok |
| 115 | const some_init_container sicon; // expected-error {{default initialization of an object of const type 'const some_init_container' without a user-provided default constructor}} |
| 116 | const some_init_container_ctor siconc; // ok |
| 117 | const no_fields_container nfc; // ok |
| 118 | const param_pack_ctor ppc; // ok |
| 119 | const param_pack_ctor_field ppcf; // ok |
| 120 | const multi_param_pack_ctor mppc; // ok |
| 121 | const multi_param_pack_and_defaulted mppad; // expected-error {{default initialization of an object of const type 'const multi_param_pack_and_defaulted' without a user-provided default constructor}} |
| 122 | const ignored_template_ctor_and_def itcad; // expected-error {{default initialization of an object of const type 'const ignored_template_ctor_and_def' without a user-provided default constructor}} |
| 123 | |
| 124 | } |
| 125 | |
| 126 | struct non_const_derived : non_const_copy { |
| 127 | non_const_derived(const non_const_derived&) = default; // expected-error {{requires it to be non-const}} |
| 128 | non_const_derived& operator =(non_const_derived&) = default; |
| 129 | }; |
| 130 | |
| 131 | struct bad_decls { |
| 132 | bad_decls(volatile bad_decls&) = default; // expected-error {{may not be volatile}} |
| 133 | bad_decls&& operator = (bad_decls) = default; // expected-error {{lvalue reference}} expected-error {{must return 'bad_decls &'}} |
| 134 | bad_decls& operator = (volatile bad_decls&) = default; // expected-error {{may not be volatile}} |
| 135 | bad_decls& operator = (const bad_decls&) const = default; // expected-error {{may not have 'const', 'constexpr' or 'volatile' qualifiers}} |
| 136 | }; |
| 137 | |
| 138 | struct DefaultDelete { |
| 139 | DefaultDelete() = default; // expected-note {{previous definition is here}} |
| 140 | DefaultDelete() = delete; // expected-error {{constructor cannot be redeclared}} |
| 141 | |
| 142 | ~DefaultDelete() = default; // expected-note {{previous definition is here}} |
| 143 | ~DefaultDelete() = delete; // expected-error {{destructor cannot be redeclared}} |
| 144 | |
| 145 | DefaultDelete &operator=(const DefaultDelete &) = default; // expected-note {{previous definition is here}} |
| 146 | DefaultDelete &operator=(const DefaultDelete &) = delete; // expected-error {{class member cannot be redeclared}} |
| 147 | }; |
| 148 | |
| 149 | struct DeleteDefault { |
| 150 | DeleteDefault() = delete; // expected-note {{previous definition is here}} |
| 151 | DeleteDefault() = default; // expected-error {{constructor cannot be redeclared}} |
| 152 | |
| 153 | ~DeleteDefault() = delete; // expected-note {{previous definition is here}} |
| 154 | ~DeleteDefault() = default; // expected-error {{destructor cannot be redeclared}} |
| 155 | |
| 156 | DeleteDefault &operator=(const DeleteDefault &) = delete; // expected-note {{previous definition is here}} |
| 157 | DeleteDefault &operator=(const DeleteDefault &) = default; // expected-error {{class member cannot be redeclared}} |
| 158 | }; |
| 159 | |
| 160 | struct A {}; struct B {}; |
| 161 | |
| 162 | struct except_spec_a { |
| 163 | virtual ~except_spec_a() throw(A); |
| 164 | except_spec_a() throw(A); |
| 165 | }; |
| 166 | struct except_spec_b { |
| 167 | virtual ~except_spec_b() throw(B); |
| 168 | except_spec_b() throw(B); |
| 169 | }; |
| 170 | |
| 171 | struct except_spec_d_good : except_spec_a, except_spec_b { |
| 172 | ~except_spec_d_good(); |
| 173 | }; |
| 174 | except_spec_d_good::~except_spec_d_good() = default; |
| 175 | struct except_spec_d_good2 : except_spec_a, except_spec_b { |
| 176 | ~except_spec_d_good2() = default; |
| 177 | }; |
| 178 | struct except_spec_d_bad : except_spec_a, except_spec_b { |
| 179 | ~except_spec_d_bad() noexcept; |
| 180 | }; |
| 181 | // FIXME: This should error because this exception spec is not |
| 182 | // compatible with the implicit exception spec. |
| 183 | except_spec_d_bad::~except_spec_d_bad() noexcept = default; |
| 184 | |
| 185 | // FIXME: This should error because this exception spec is not |
| 186 | // compatible with the implicit exception spec. |
| 187 | struct except_spec_d_mismatch : except_spec_a, except_spec_b { |
| 188 | except_spec_d_mismatch() throw(A) = default; |
| 189 | }; |
| 190 | struct except_spec_d_match : except_spec_a, except_spec_b { |
| 191 | except_spec_d_match() throw(A, B) = default; |
| 192 | }; |
| 193 | |
| 194 | // gcc-compatibility: allow attributes on default definitions |
| 195 | // (but not normal definitions) |
| 196 | struct S { S(); }; |
| 197 | S::S() __attribute((pure)) = default; |
| 198 | |
| 199 | using size_t = decltype(sizeof(0)); |
| 200 | void *operator new(size_t) = delete; // expected-error {{deleted definition must be first declaration}} expected-note {{implicit}} |
| 201 | void operator delete(void *) noexcept = delete; // expected-error {{deleted definition must be first declaration}} expected-note {{implicit}} |
| 202 | |