hanchenye-llvm-project/clang/test/SemaCXX/enum.cpp

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2009-12-17 04:47:15 +08:00
// RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++98 -verify -triple x86_64-apple-darwin %s
enum E {
Val1,
Val2
};
int& enumerator_type(int);
float& enumerator_type(E);
void f() {
E e = Val1;
float& fr = enumerator_type(Val2);
}
// <rdar://problem/6502934>
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];
}