1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 | // RUN: %clang_cc1 -fsyntax-only -verify %s // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s // C++03 [namespace.udecl]p4: // A using-declaration used as a member-declaration shall refer to a // member of a base class of the class being defined, shall refer to // a member of an anonymous union that is a member of a base class // of the class being defined, or shall refer to an enumerator for // an enumeration type that is a member of a base class of the class // being defined. // There is no directly analogous paragraph in C++0x, and the feature // works sufficiently differently there that it needs a separate test. namespace test0 { namespace NonClass { typedef int type; struct hiding {}; int hiding; static union { double union_member; }; enum tagname { enumerator }; } class Test0 { using NonClass::type; // expected-error {{not a class}} using NonClass::hiding; // expected-error {{not a class}} using NonClass::union_member; // expected-error {{not a class}} using NonClass::enumerator; // expected-error {{not a class}} }; } struct Opaque0 {}; namespace test1 { struct A { typedef int type; struct hiding {}; // expected-note {{previous use is here}} Opaque0 hiding; union { double union_member; }; enum tagname { enumerator }; }; struct B : A { using A::type; using A::hiding; using A::union_member; using A::enumerator; using A::tagname; void test0() { type t = 0; } void test1() { typedef struct A::hiding local; struct hiding _ = local(); } void test2() { union hiding _; // expected-error {{tag type that does not match previous}} } void test3() { char array[sizeof(union_member) == sizeof(double) ? 1 : -1]; } void test4() { enum tagname _ = enumerator; } void test5() { Opaque0 _ = hiding; } }; } namespace test2 { struct A { typedef int type; struct hiding {}; // expected-note {{previous use is here}} int hiding; union { double union_member; }; enum tagname { enumerator }; }; template <class T> struct B : A { using A::type; using A::hiding; using A::union_member; using A::enumerator; using A::tagname; void test0() { type t = 0; } void test1() { typedef struct A::hiding local; struct hiding _ = local(); } void test2() { union hiding _; // expected-error {{tag type that does not match previous}} } void test3() { char array[sizeof(union_member) == sizeof(double) ? 1 : -1]; } void test4() { enum tagname _ = enumerator; } void test5() { Opaque0 _ = hiding; } }; } namespace test3 { struct hiding {}; template <class T> struct A { typedef int type; // expected-note {{target of using declaration}} struct hiding {}; Opaque0 hiding; // expected-note {{target of using declaration}} union { double union_member; }; // expected-note {{target of using declaration}} enum tagname { enumerator }; // expected-note 2 {{target of using declaration}} }; template <class T> struct B : A<T> { using A<T>::type; // expected-error {{dependent using declaration resolved to type without 'typename'}} using A<T>::hiding; using A<T>::union_member; using A<T>::enumerator; using A<T>::tagname; // expected-error {{dependent using declaration resolved to type without 'typename'}} // FIXME: re-enable these when the various bugs involving tags are fixed #if 0 void test1() { typedef struct A<T>::hiding local; struct hiding _ = local(); } void test2() { typedef struct A<T>::hiding local; union hiding _ = local(); } #endif void test3() { char array[sizeof(union_member) == sizeof(double) ? 1 : -1]; } #if 0 void test4() { enum tagname _ = enumerator; } #endif void test5() { Opaque0 _ = hiding; } }; template struct B<int>; // expected-note {{in instantiation}} template <class T> struct C : A<T> { using typename A<T>::type; using typename A<T>::hiding; // expected-note {{declared here}} \ // expected-error {{'typename' keyword used on a non-type}} using typename A<T>::union_member; // expected-error {{'typename' keyword used on a non-type}} using typename A<T>::enumerator; // expected-error {{'typename' keyword used on a non-type}} void test6() { type t = 0; } void test7() { Opaque0 _ = hiding; // expected-error {{does not refer to a value}} } }; template struct C<int>; // expected-note {{in instantiation}} } namespace test4 { struct Base { int foo(); }; struct Unrelated { int foo(); }; struct Subclass : Base { }; namespace InnerNS { int foo(); } // We should be able to diagnose these without instantiation. template <class T> struct C : Base { using InnerNS::foo; // expected-error {{not a class}} using Base::bar; // expected-error {{no member named 'bar'}} using Unrelated::foo; // expected-error {{not a base class}} using C::foo; // legal in C++03 using Subclass::foo; // legal in C++03 #if __cplusplus >= 201103L // expected-error@-3 {{refers to its own class}} // expected-error@-3 {{refers into 'Subclass::', which is not a base class}} #endif int bar(); #if __cplusplus < 201103L // expected-note@-2 {{target of using declaration}} #endif using C::bar; // expected-error {{refers to its own class}} }; } namespace test5 { struct B; struct A { A(const B&); B &operator=(const B&); }; struct B : A { #if __cplusplus >= 201103L using A::A; #endif using A::operator=; }; void test(B b) { B b2(b); b2 = b; } } |