You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.5 KiB
40 lines
1.5 KiB
// RUN: %clang_cc1 -std=c++11 -verify %s
|
|
|
|
struct Base {
|
|
static const int a = 1;
|
|
};
|
|
template<typename T> struct S : Base {
|
|
enum E : int;
|
|
constexpr int f() const;
|
|
constexpr int g() const;
|
|
void h();
|
|
};
|
|
template<> enum S<char>::E : int {}; // expected-note {{enum 'S<char>::E' was explicitly specialized here}}
|
|
template<> enum S<short>::E : int { b = 2 };
|
|
template<> enum S<int>::E : int { a = 4 };
|
|
template<typename T> enum S<T>::E : int { b = 8 };
|
|
|
|
// The unqualified-id here names a member of the non-dependent base class Base
|
|
// and not the injected enumerator name 'a' from the specialization.
|
|
template<typename T> constexpr int S<T>::f() const { return a; }
|
|
static_assert(S<char>().f() == 1, "");
|
|
static_assert(S<int>().f() == 1, "");
|
|
|
|
// The unqualified-id here names a member of the current instantiation, which
|
|
// bizarrely might not exist in some instantiations.
|
|
template<typename T> constexpr int S<T>::g() const { return b; } // expected-error {{enumerator 'b' does not exist in instantiation of 'S<char>'}}
|
|
static_assert(S<char>().g() == 1, ""); // expected-note {{here}} expected-error {{not an integral constant expression}}
|
|
static_assert(S<short>().g() == 2, "");
|
|
static_assert(S<long>().g() == 8, "");
|
|
|
|
// 'b' is type-dependent, so these assertions should not fire before 'h' is
|
|
// instantiated.
|
|
template<typename T> void S<T>::h() {
|
|
char c[S<T>::b];
|
|
static_assert(b != 8, "");
|
|
static_assert(sizeof(c) != 8, "");
|
|
}
|
|
void f() {
|
|
S<short>().h(); // ok, b == 2
|
|
}
|