// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++17 -verify -triple x86_64-apple-darwin %s
enum class E1 {
Val1 = 1L
};
enum struct E2 {
Val1 = '\0'
};
E1 v1 = Val1; // expected-error{{undeclared identifier}}
E1 v2 = E1::Val1;
static_assert(sizeof(E1) == sizeof(int), "bad size");
static_assert(sizeof(E1::Val1) == sizeof(int), "bad size");
static_assert(sizeof(E2) == sizeof(int), "bad size");
static_assert(sizeof(E2::Val1) == sizeof(int), "bad size");
E1 v3 = E2::Val1; // expected-error{{cannot initialize a variable}}
int x1 = E1::Val1; // expected-error{{cannot initialize a variable}}
enum E3 : char {
Val2 = 1
};
E3 v4 = Val2;
E1 v5 = Val2; // expected-error{{cannot initialize a variable}}
static_assert(sizeof(E3) == 1, "bad size");
int x2 = Val2;
int a1[Val2];
int a2[E1::Val1];
#if __cplusplus >= 201703L
// expected-error@-3 {{type 'E1' is not implicitly convertible to 'unsigned long'}}
#else
// expected-error@-5 {{size of array has non-integer type}}
#endif
int* p1 = new int[Val2];
int* p2 = new int[E1::Val1];
#if __cplusplus >= 201703L
// expected-error@-3 {{converting 'E1' to incompatible type 'unsigned long'}}
#else
// expected-error@-5 {{array size expression must have integral or unscoped enumeration type, not 'E1'}}
#endif
enum class E4 {
e1 = -2147483648, // ok
e2 = 2147483647, // ok
e3 = 2147483648 // expected-error{{enumerator value evaluates to 2147483648, which cannot be narrowed to type 'int'}}
// expected-warning@-1{{changes value}}
};
enum class E5 {
e1 = 2147483647, // ok
e2 // expected-error{{2147483648 is not representable in the underlying}}
};
enum class E6 : bool {
e1 = false, e2 = true,
e3 // expected-error{{2 is not representable in the underlying}}
};
enum E7 : bool {
e1 = false, e2 = true,
e3 // expected-error{{2 is not representable in the underlying}}
};
template <class T>
struct X {
enum E : T {
e1, e2,
e3 // expected-error{{2 is not representable in the underlying}}
};
};
X<bool> X2; // expected-note{{in instantiation of template}}
enum Incomplete1; // expected-error{{C++ forbids forward references}}
enum Complete1 : int;
Complete1 complete1;
enum class Complete2;
Complete2 complete2;
// All the redeclarations below are done twice on purpose. Tests that the type
// of the declaration isn't changed.
enum class Redeclare2; // expected-note{{previous declaration is here}} expected-note{{previous declaration is here}}
enum Redeclare2; // expected-error{{previously declared as scoped}}
enum Redeclare2; // expected-error{{previously declared as scoped}}
enum Redeclare3 : int; // expected-note{{previous declaration is here}} expected-note{{previous declaration is here}}
enum Redeclare3; // expected-error{{previously declared with fixed underlying type}}
enum Redeclare3; // expected-error{{previously declared with fixed underlying type}}
enum class Redeclare5;
enum class Redeclare5 : int; // ok
enum Redeclare6 : int; // expected-note{{previous declaration is here}} expected-note{{previous declaration is here}}
enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}}
enum Redeclare6 : short; // expected-error{{redeclared with different underlying type}}
enum class Redeclare7; // expected-note{{previous declaration is here}} expected-note{{previous declaration is here}}
enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}}
enum class Redeclare7 : short; // expected-error{{redeclared with different underlying type}}
enum : long {
long_enum_val = 10000
};
enum : long x; // expected-error{{unnamed enumeration must be a definition}}
void PR9333() {
enum class scoped_enum { yes, no, maybe };
scoped_enum e = scoped_enum::yes;
if (e == scoped_enum::no) { }
}
namespace rdar9366066 {
enum class X : unsigned { value };
void f(X x) {
x % X::value; // expected-error{{invalid operands to binary expression ('X' and 'rdar9366066::X')}}
x % 8; // expected-error{{invalid operands to binary expression ('X' and 'int')}}
}
}
// Part 1 of PR10264
namespace test5 {
namespace ns {
typedef unsigned Atype;
enum A : Atype;
}
enum ns::A : ns::Atype {
x, y, z
};
}
// Part 2 of PR10264
namespace test6 {
enum A : unsigned;
struct A::a; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
// expected-error@-1{{forward declaration of struct cannot have a nested name specifier}}
enum A::b; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
// expected-error@-1{{forward declaration of enum cannot have a nested name specifier}}
int A::c; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
void A::d(); // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
void test() {
(void) A::e; // expected-error {{incomplete type 'test6::A' named in nested name specifier}}
}
}
namespace PR11484 {
const int val = 104;
enum class test1 { owner_dead = val, };
}
namespace N2764 {
enum class E *x0a; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}}
enum E2 *x0b; // OK
enum class E { a, b };
enum E x1 = E::a; // ok
enum class E x2 = E::a; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}}
enum F { a, b };
enum F y1 = a; // ok
enum class F y2 = a; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}}
struct S {
friend enum class E; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}}
// expected-warning@-1 {{elaborated enum specifier cannot be declared as a friend}}
// expected-note@-2 {{remove 'enum class' to befriend an enum}}
friend enum class F; // expected-error {{reference to enumeration must use 'enum' not 'enum class'}}
// expected-warning@-1 {{elaborated enum specifier cannot be declared as a friend}}
// expected-note@-2 {{remove 'enum class' to befriend an enum}}
friend enum G {}; // expected-error {{forward reference}} expected-error {{cannot define a type in a friend declaration}}
// expected-warning@-1 {{elaborated enum specifier cannot be declared as a friend}}
// expected-note@-2 {{remove 'enum' to befriend an enum}}
friend enum class H {}; // expected-error {{forward reference}} expected-error {{cannot define a type in a friend declaration}}
// expected-warning@-1 {{elaborated enum specifier cannot be declared as a friend}}
// expected-note@-2 {{remove 'enum' to befriend an enum}}
friend enum I : int {}; // expected-error {{forward reference}} expected-error {{cannot define a type in a friend declaration}}
// expected-warning@-1 {{elaborated enum specifier cannot be declared as a friend}}
// expected-note@-2 {{remove 'enum' to befriend an enum}}
enum A : int;
A a;
} s;
enum S::A : int {};
enum class B;
}
enum class N2764::B {};
namespace PR12106 {
template<typename E> struct Enum {
Enum() : m_e(E::Last) {}
E m_e;
};
enum eCOLORS { Last };
Enum<eCOLORS> e;
}
namespace test7 {
enum class E { e = (struct S*)0 == (struct S*)0 };
S *p;
}
namespace test8 {
template<typename T> struct S {
enum A : int; // expected-note {{here}}
enum class B; // expected-note {{here}}
enum class C : int; // expected-note {{here}}
enum class D : int; // expected-note {{here}}
};
template<typename T> enum S<T>::A { a }; // expected-error {{previously declared with fixed underlying type}}
template<typename T> enum class S<T>::B : char { b }; // expected-error {{redeclared with different underlying}}
template<typename T> enum S<T>::C : int { c }; // expected-error {{previously declared as scoped}}
template<typename T> enum class S<T>::D : char { d }; // expected-error {{redeclared with different underlying}}
}
namespace test9 {
template<typename T> struct S {
enum class ET : T; // expected-note 2{{here}}
enum class Eint : int; // expected-note 2{{here}}
};
template<> enum class S<int>::ET : int {};
template<> enum class S<char>::ET : short {}; // expected-error {{different underlying type}}
template<> enum class S<int>::Eint : short {}; // expected-error {{different underlying type}}
template<> enum class S<char>::Eint : int {};
template<typename T> enum class S<T>::ET : int {}; // expected-error {{different underlying type 'int' (was 'short')}}
template<typename T> enum class S<T>::Eint : T {}; // expected-error {{different underlying type 'short' (was 'int')}}
// The implicit instantiation of S<short> causes the implicit instantiation of
// all declarations of member enumerations, so is ill-formed, even though we
// never instantiate the definitions of S<short>::ET nor S<short>::Eint.
S<short> s; // expected-note {{in instantiation of}}
}
namespace test10 {
template<typename T> int f() {
enum E : int;
enum E : T; // expected-note {{here}}
E x;
enum E : int { e }; // expected-error {{different underlying}}
x = e;
return x;
}
int k = f<int>();
int l = f<short>(); // expected-note {{here}}
template<typename T> int g() {
enum class E : int;
enum class E : T; // expected-note {{here}}
E x;
enum class E : int { e }; // expected-error {{different underlying}}
x = E::e;
return (int)x;
}
int m = g<int>();
int n = g<short>(); // expected-note {{here}}
}
namespace pr13128 {
// This should compile cleanly
class C {
enum class E { C };
};
}
namespace PR15633 {
template<typename T> struct A {
struct B {
enum class E : T;
enum class E2 : T;
};
};
template<typename T> enum class A<T>::B::E { e };
template class A<int>;
struct B { enum class E; };
template<typename T> enum class B::E { e }; // expected-error {{enumeration cannot be a template}}
}
namespace PR16900 {
enum class A;
A f(A a) { return -a; } // expected-error {{invalid argument type 'A' to unary expression}}
}
namespace PR18551 {
enum class A { A };
bool f() { return !A::A; } // expected-error {{invalid argument type 'PR18551::A' to unary expression}}
}
namespace rdar15124329 {
enum class B : bool { F, T };
const rdar15124329::B T1 = B::T;
typedef B C; const C T2 = B::T;
static_assert(T1 != B::F, "");
static_assert(T2 == B::T, "");
}
namespace PR18044 {
enum class E { a };
int E::e = 0; // expected-error {{does not refer into a class}}
void E::f() {} // expected-error {{does not refer into a class}}
struct E::S {}; // expected-error {{no struct named 'S'}}
struct T : E::S {}; // expected-error {{expected class name}}
enum E::E {}; // expected-error {{no enum named 'E'}}
int E::*p; // expected-error {{does not point into a class}}
using E::f; // expected-error {{no member named 'f'}}
using E::a; // expected-warning {{using declaration naming a scoped enumerator is a C++20 extension}}
E b = a;
}
namespace test11 {
enum class E { a };
typedef E E2;
E2 f1() { return E::a; }
bool f() { return !f1(); } // expected-error {{invalid argument type 'E2' (aka 'test11::E') to unary expression}}
}
namespace PR35586 {
enum C { R=-1, G, B };
enum B { F = (enum C) -1, T}; // this should compile cleanly, it used to assert.
};
namespace test12 {
// Check that clang rejects this code without crashing in c++17.
enum class A;
enum class B;
A a;
B b{a}; // expected-error {{cannot initialize}}
}
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