1// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s 2 3enum class E1 { 4 Val1 = 1L 5}; 6 7enum struct E2 { 8 Val1 = '\0' 9}; 10 11E1 v1 = Val1; // expected-error{{undeclared identifier}} 12E1 v2 = E1::Val1; 13 14static_assert(sizeof(E1) == sizeof(int), "bad size"); 15static_assert(sizeof(E1::Val1) == sizeof(int), "bad size"); 16static_assert(sizeof(E2) == sizeof(int), "bad size"); 17static_assert(sizeof(E2::Val1) == sizeof(int), "bad size"); 18 19E1 v3 = E2::Val1; // expected-error{{cannot initialize a variable}} 20int x1 = E1::Val1; // expected-error{{cannot initialize a variable}} 21 22enum E3 : char { 23 Val2 = 1 24}; 25 26E3 v4 = Val2; 27E1 v5 = Val2; // expected-error{{cannot initialize a variable}} 28 29static_assert(sizeof(E3) == 1, "bad size"); 30 31int x2 = Val2; 32 33int a1[Val2]; 34int a2[E1::Val1]; // expected-error{{size of array has non-integer type}} 35 36int* p1 = new int[Val2]; 37int* p2 = new int[E1::Val1]; // expected-error{{array size expression must have integral or unscoped enumeration type, not 'E1'}} 38 39enum class E4 { 40 e1 = -2147483648, // ok 41 e2 = 2147483647, // ok 42 e3 = 2147483648 // expected-error{{enumerator value evaluates to 2147483648, which cannot be narrowed to type 'int'}} 43}; 44 45enum class E5 { 46 e1 = 2147483647, // ok 47 e2 // expected-error{{2147483648 is not representable in the underlying}} 48}; 49 50enum class E6 : bool { 51 e1 = false, e2 = true, 52 e3 // expected-error{{2 is not representable in the underlying}} 53}; 54 55enum E7 : bool { 56 e1 = false, e2 = true, 57 e3 // expected-error{{2 is not representable in the underlying}} 58}; 59 60template <class T> 61struct X { 62 enum E : T { 63 e1, e2, 64 e3 // expected-error{{2 is not representable in the underlying}} 65 }; 66}; 67 68X<bool> X2; // expected-note{{in instantiation of template}} 69 70enum Incomplete1; // expected-error{{C++ forbids forward references}} 71 72enum Complete1 : int; 73Complete1 complete1; 74 75enum class Complete2; 76Complete2 complete2; 77 78// All the redeclarations below are done twice on purpose. Tests that the type 79// of the declaration isn't changed. 80 81enum class Redeclare2; // expected-note{{previous use is here}} expected-note{{previous use is here}} 82enum Redeclare2; // expected-error{{previously declared as scoped}} 83enum Redeclare2; // expected-error{{previously declared as scoped}} 84 85enum Redeclare3 : int; // expected-note{{previous use is here}} expected-note{{previous use is here}} 86enum Redeclare3; // expected-error{{previously declared with fixed underlying type}} 87enum Redeclare3; // expected-error{{previously declared with fixed underlying type}} 88 89enum class Redeclare5; 90enum class Redeclare5 : int; // ok 91 92enum Redeclare6 : int; // expected-note{{previous use is here}} expected-note{{previous use is here}} 93enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}} 94enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}} 95 96enum class Redeclare7; // expected-note{{previous use is here}} expected-note{{previous use is here}} 97enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}} 98enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}} 99 100enum : long { 101 long_enum_val = 10000 102}; 103 104enum : long x; // expected-error{{unnamed enumeration must be a definition}} \ 105// expected-warning{{declaration does not declare anything}} 106 107void PR9333() { 108 enum class scoped_enum { yes, no, maybe }; 109 scoped_enum e = scoped_enum::yes; 110 if (e == scoped_enum::no) { } 111} 112 113// <rdar://problem/9366066> 114namespace rdar9366066 { 115 enum class X : unsigned { value }; 116 117 void f(X x) { 118 x % X::value; // expected-error{{invalid operands to binary expression ('rdar9366066::X' and 'rdar9366066::X')}} 119 x % 8; // expected-error{{invalid operands to binary expression ('rdar9366066::X' and 'int')}} 120 } 121} 122 123// Part 1 of PR10264 124namespace test5 { 125 namespace ns { 126 typedef unsigned Atype; 127 enum A : Atype; 128 } 129 enum ns::A : ns::Atype { 130 x, y, z 131 }; 132} 133 134// Part 2 of PR10264 135namespace test6 { 136 enum A : unsigned; 137 struct A::a; // expected-error {{incomplete type 'test6::A' named in nested name specifier}} 138 enum A::b; // expected-error {{incomplete type 'test6::A' named in nested name specifier}} 139 int A::c; // expected-error {{incomplete type 'test6::A' named in nested name specifier}} 140 void A::d(); // expected-error {{incomplete type 'test6::A' named in nested name specifier}} 141 void test() { 142 (void) A::e; // expected-error {{incomplete type 'test6::A' named in nested name specifier}} 143 } 144} 145 146namespace PR11484 { 147 const int val = 104; 148 enum class test1 { owner_dead = val, }; 149} 150 151namespace N2764 { 152 enum class E { a, b }; 153 enum E x1 = E::a; // ok 154 enum class E x2 = E::a; // expected-error {{reference to scoped enumeration must use 'enum' not 'enum class'}} 155 156 enum F { a, b }; 157 enum F y1 = a; // ok 158 enum class F y2 = a; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}} 159 160 struct S { 161 friend enum class E; // expected-error {{reference to scoped enumeration must use 'enum' not 'enum class'}} 162 friend enum class F; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}} 163 164 friend enum G {}; // expected-error {{forward reference}} expected-error {{cannot define a type in a friend declaration}} 165 friend enum class H {}; // expected-error {{cannot define a type in a friend declaration}} 166 167 enum A : int; 168 A a; 169 } s; 170 171 enum S::A : int {}; 172 173 enum class B; 174} 175 176enum class N2764::B {}; 177 178namespace PR12106 { 179 template<typename E> struct Enum { 180 Enum() : m_e(E::Last) {} 181 E m_e; 182 }; 183 184 enum eCOLORS { Last }; 185 Enum<eCOLORS> e; 186} 187 188namespace test7 { 189 enum class E { e = (struct S*)0 == (struct S*)0 }; 190 S *p; 191} 192 193namespace test8 { 194 template<typename T> struct S { 195 enum A : int; // expected-note {{here}} 196 enum class B; // expected-note {{here}} 197 enum class C : int; // expected-note {{here}} 198 enum class D : int; // expected-note {{here}} 199 }; 200 template<typename T> enum S<T>::A { a }; // expected-error {{previously declared with fixed underlying type}} 201 template<typename T> enum class S<T>::B : char { b }; // expected-error {{redeclared with different underlying}} 202 template<typename T> enum S<T>::C : int { c }; // expected-error {{previously declared as scoped}} 203 template<typename T> enum class S<T>::D : char { d }; // expected-error {{redeclared with different underlying}} 204} 205 206namespace test9 { 207 template<typename T> struct S { 208 enum class ET : T; // expected-note 2{{here}} 209 enum class Eint : int; // expected-note 2{{here}} 210 }; 211 template<> enum class S<int>::ET : int {}; 212 template<> enum class S<char>::ET : short {}; // expected-error {{different underlying type}} 213 template<> enum class S<int>::Eint : short {}; // expected-error {{different underlying type}} 214 template<> enum class S<char>::Eint : int {}; 215 216 template<typename T> enum class S<T>::ET : int {}; // expected-error {{different underlying type 'int' (was 'short')}} 217 template<typename T> enum class S<T>::Eint : T {}; // expected-error {{different underlying type 'short' (was 'int')}} 218 219 // The implicit instantiation of S<short> causes the implicit instantiation of 220 // all declarations of member enumerations, so is ill-formed, even though we 221 // never instantiate the definitions of S<short>::ET nor S<short>::Eint. 222 S<short> s; // expected-note {{in instantiation of}} 223} 224 225namespace test10 { 226 template<typename T> int f() { 227 enum E : int; 228 enum E : T; // expected-note {{here}} 229 E x; 230 enum E : int { e }; // expected-error {{different underlying}} 231 x = e; 232 return x; 233 } 234 int k = f<int>(); 235 int l = f<short>(); // expected-note {{here}} 236 237 template<typename T> int g() { 238 enum class E : int; 239 enum class E : T; // expected-note {{here}} 240 E x; 241 enum class E : int { e }; // expected-error {{different underlying}} 242 x = E::e; 243 return (int)x; 244 } 245 int m = g<int>(); 246 int n = g<short>(); // expected-note {{here}} 247} 248