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// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++98 -verify -triple x86_64-apple-darwin %s
// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++98 -verify -triple x86_64-apple-darwin %s -fexperimental-new-constant-interpreter
// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s -fexperimental-new-constant-interpreter
enum E { // expected-note{{previous definition is here}}
Val1,
Val2
};
enum E; // expected-warning{{redeclaration of already-defined enum 'E' is a GNU extension}}
int& enumerator_type(int);
float& enumerator_type(E);
void f() {
E e = Val1;
float& fr = enumerator_type(Val2);
}
typedef enum Foo {
A = 0,
B = 1
} Foo;
void bar() {
Foo myvar = A;
myvar = B;
}
/// PR3688
struct s1 {
enum e1 (*bar)(void); // expected-error{{ISO C++ forbids forward references to 'enum' types}}
};
enum e1 { YES, NO };
static enum e1 badfunc(struct s1 *q) {
return q->bar();
}
enum e2; // expected-error{{ISO C++ forbids forward references to 'enum' types}}
namespace test1 {
template <class A, class B> struct is_same { static const int value = -1; };
template <class A> struct is_same<A,A> { static const int value = 1; };
enum enum0 { v0 };
int test0[is_same<__typeof(+v0), int>::value];
enum enum1 { v1 = __INT_MAX__ };
int test1[is_same<__typeof(+v1), int>::value];
enum enum2 { v2 = __INT_MAX__ * 2U };
int test2[is_same<__typeof(+v2), unsigned int>::value];
enum enum3 { v3 = __LONG_MAX__ };
int test3[is_same<__typeof(+v3), long>::value];
enum enum4 { v4 = __LONG_MAX__ * 2UL };
int test4[is_same<__typeof(+v4), unsigned long>::value];
}
// PR6061
namespace PR6061 {
struct A { enum { id }; };
struct B { enum { id }; };
struct C : public A, public B
{
enum { id };
};
}
namespace Conditional {
enum a { A }; a x(const enum a x) { return 1?x:A; }
}
namespace PR7051 {
enum E { e0 };
void f() {
E e;
e = 1; // expected-error{{assigning to 'E' from incompatible type 'int'}}
e |= 1; // expected-error{{assigning to 'E' from incompatible type 'int'}}
}
}
// PR7466
enum { }; // expected-warning{{declaration does not declare anything}}
typedef enum { }; // expected-warning{{typedef requires a name}}
// PR7921
enum PR7921E { // expected-note {{not complete until the closing '}'}}
PR7921V = (PR7921E)(123) // expected-error {{'PR7921E' is an incomplete type}}
};
void PR8089() {
enum E; // expected-error{{ISO C++ forbids forward references to 'enum' types}} expected-note {{forward declaration}}
int a = (E)3; // expected-error {{'E' is an incomplete type}}
}
// This is accepted as a GNU extension. In C++98, there was no provision for
// expressions with UB to be non-constant.
enum { overflow = 123456 * 234567 };
// expected-error@-1 {{expression is not an integral constant expression}}
// expected-note@-2 {{value 28958703552 is outside the range of representable values of type 'int'}}
#if __cplusplus < 201103L
// expected-warning@-4 {{overflow in expression; result is -1'106'067'520 with type 'int'}}
#endif
enum { overflow_shift = 1 << 32 };
// expected-error@-1 {{expression is not an integral constant expression}}
// expected-note@-2 {{shift count 32 >= width of type 'int' (32 bits)}}
// FIXME: This is not consistent with the above case.
enum NoFold : int { overflow2 = 123456 * 234567 };
#if __cplusplus >= 201103L
// expected-error@-2 {{enumerator value is not a constant expression}}
// expected-note@-3 {{value 28958703552 is outside the range of representable values}}
#else
// expected-warning@-5 {{enumeration types with a fixed underlying type are a C++11 extension}}
// expected-warning@-6 {{overflow in expression; result is -1'106'067'520 with type 'int'}}
// expected-error@-7 {{expression is not an integral constant expression}}
// expected-note@-8 {{value 28958703552 is outside the range of representable values of type 'int'}}
#endif
enum : int { overflow2_shift = 1 << 32 };
#if __cplusplus >= 201103L
// expected-error@-2 {{enumerator value is not a constant expression}}
// expected-note@-3 {{shift count 32 >= width of type 'int' (32 bits)}}
#else
// expected-error@-5 {{expression is not an integral constant expression}}
// expected-note@-6 {{shift count 32 >= width of type 'int' (32 bits)}}
// expected-warning@-7 {{enumeration types with a fixed underlying type are a C++11 extension}}
#endif
// PR28903
struct PR28903 {
enum {
PR28903_A = (enum { // expected-error-re {{'PR28903::(unnamed enum at {{.*}})' cannot be defined in an enumeration}}
PR28903_B,
PR28903_C = PR28903_B
})
};
};
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