1 // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
11 E1 v1 = Val1; // expected-error{{undeclared identifier}}
14 static_assert(sizeof(E1) == sizeof(int), "bad size");
15 static_assert(sizeof(E1::Val1) == sizeof(int), "bad size");
16 static_assert(sizeof(E2) == sizeof(int), "bad size");
17 static_assert(sizeof(E2::Val1) == sizeof(int), "bad size");
19 E1 v3 = E2::Val1; // expected-error{{cannot initialize a variable}}
20 int x1 = E1::Val1; // expected-error{{cannot initialize a variable}}
27 E1 v5 = Val2; // expected-error{{cannot initialize a variable}}
29 static_assert(sizeof(E3) == 1, "bad size");
34 int a2[E1::Val1]; // expected-error{{size of array has non-integer type}}
36 int* p1 = new int[Val2];
37 int* p2 = new int[E1::Val1]; // expected-error{{array size expression must have integral or unscoped enumeration type, not 'E1'}}
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'}}
46 e1 = 2147483647, // ok
47 e2 // expected-error{{2147483648 is not representable in the underlying}}
50 enum class E6 : bool {
51 e1 = false, e2 = true,
52 e3 // expected-error{{2 is not representable in the underlying}}
56 e1 = false, e2 = true,
57 e3 // expected-error{{2 is not representable in the underlying}}
64 e3 // expected-error{{2 is not representable in the underlying}}
68 X<bool> X2; // expected-note{{in instantiation of template}}
70 enum Incomplete1; // expected-error{{C++ forbids forward references}}
78 // All the redeclarations below are done twice on purpose. Tests that the type
79 // of the declaration isn't changed.
81 enum class Redeclare2; // expected-note{{previous use is here}} expected-note{{previous use is here}}
82 enum Redeclare2; // expected-error{{previously declared as scoped}}
83 enum Redeclare2; // expected-error{{previously declared as scoped}}
85 enum Redeclare3 : int; // expected-note{{previous use is here}} expected-note{{previous use is here}}
86 enum Redeclare3; // expected-error{{previously declared with fixed underlying type}}
87 enum Redeclare3; // expected-error{{previously declared with fixed underlying type}}
89 enum class Redeclare5;
90 enum class Redeclare5 : int; // ok
92 enum Redeclare6 : int; // expected-note{{previous use is here}} expected-note{{previous use is here}}
93 enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}}
94 enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}}
96 enum class Redeclare7; // expected-note{{previous use is here}} expected-note{{previous use is here}}
97 enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}}
98 enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}}
101 long_enum_val = 10000
104 enum : long x; // expected-error{{unnamed enumeration must be a definition}} \
105 // expected-warning{{declaration does not declare anything}}
108 enum class scoped_enum { yes, no, maybe };
109 scoped_enum e = scoped_enum::yes;
110 if (e == scoped_enum::no) { }
113 // <rdar://problem/9366066>
114 namespace rdar9366066 {
115 enum class X : unsigned { value };
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')}}
126 typedef unsigned Atype;
129 enum ns::A : ns::Atype {
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}}
142 (void) A::e; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
148 enum class test1 { owner_dead = val, };
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'}}
158 enum class F y2 = a; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}}
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'}}
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}}
176 enum class N2764::B {};
179 template<typename E> struct Enum {
180 Enum() : m_e(E::Last) {}
184 enum eCOLORS { Last };
189 enum class E { e = (struct S*)0 == (struct S*)0 };
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}}
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}}
207 template<typename T> struct S {
208 enum class ET : T; // expected-note 2{{here}}
209 enum class Eint : int; // expected-note 2{{here}}
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 {};
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')}}
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}}
226 template<typename T> int f() {
228 enum E : T; // expected-note {{here}}
230 enum E : int { e }; // expected-error {{different underlying}}
235 int l = f<short>(); // expected-note {{here}}
237 template<typename T> int g() {
239 enum class E : T; // expected-note {{here}}
241 enum class E : int { e }; // expected-error {{different underlying}}
246 int n = g<short>(); // expected-note {{here}}
250 // This should compile cleanly
257 template<typename T> struct A {
263 template<typename T> enum class A<T>::B::E { e };
264 template class A<int>;
266 struct B { enum class E; };
267 template<typename T> enum class B::E { e }; // expected-error {{enumeration cannot be a template}}
272 A f(A a) { return -a; } // expected-error {{invalid argument type 'PR16900::A' to unary expression}}
275 namespace rdar15124329 {
276 enum class B : bool { F, T };
278 const rdar15124329::B T1 = B::T;
279 typedef B C; const C T2 = B::T;
281 static_assert(T1 != B::F, "");
282 static_assert(T2 == B::T, "");
288 int E::e = 0; // expected-error {{does not refer into a class}}
289 void E::f() {} // expected-error {{does not refer into a class}}
290 struct E::S {}; // expected-error {{no struct named 'S'}}
291 struct T : E::S {}; // expected-error {{expected class name}}
292 enum E::E {}; // expected-error {{no enum named 'E'}}
293 int E::*p; // expected-error {{does not point into a class}}
294 using E::f; // expected-error {{no member named 'f'}}