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// { dg-do compile { target c++11 } }
template<typename T, typename U>
struct is_same
{
static const bool value = false;
};
template<typename T>
struct is_same<T, T>
{
static const bool value = true;
};
#define CHECK_DECLTYPE(DECLTYPE,RESULT) \
static_assert(is_same< DECLTYPE , RESULT >::value, #RESULT)
struct A {};
int a;
int& b = a;
const int& c = a;
const int d = 5;
const A e = A();
CHECK_DECLTYPE(decltype(a), int);
CHECK_DECLTYPE(decltype(b), int&);
CHECK_DECLTYPE(decltype(c), const int&);
CHECK_DECLTYPE(decltype(d), const int);
CHECK_DECLTYPE(decltype(e), const A);
CHECK_DECLTYPE(decltype(a), int);
CHECK_DECLTYPE(decltype((a)), int&);
void foo_check(int a, int& b, float& c, int* d)
{
CHECK_DECLTYPE(decltype(a), int);
CHECK_DECLTYPE(decltype(b), int&);
CHECK_DECLTYPE(decltype(c), float&);
CHECK_DECLTYPE(decltype(d), int*);
}
int foo(char);
int bar(char);
int bar(int);
CHECK_DECLTYPE(decltype(foo), int(char));
decltype(bar) z; // { dg-error "overload" "overload" }
// { dg-error "invalid type" "invalid" { target *-*-* } 47 }
CHECK_DECLTYPE(decltype(&foo), int(*)(char));
CHECK_DECLTYPE(decltype(*&foo), int(&)(char));
void array_types()
{
int a[10];
CHECK_DECLTYPE(decltype(a), int[10]);
}
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