| // RUN: %clang_cc1 -ffreestanding -fsyntax-only -verify -std=c++11 %s |
| |
| #include "limits.h" |
| |
| template<typename T, typename U> |
| struct is_same_type { |
| static const bool value = false; |
| }; |
| template <typename T> |
| struct is_same_type<T, T> { |
| static const bool value = true; |
| }; |
| |
| __underlying_type(int) a; // expected-error {{only enumeration types}} |
| __underlying_type(struct b) c; // expected-error {{only enumeration types}} |
| |
| enum class f : char; |
| static_assert(is_same_type<char, __underlying_type(f)>::value, |
| "f has the wrong underlying type"); |
| |
| enum g {d = INT_MIN }; |
| static_assert(is_same_type<int, __underlying_type(g)>::value, |
| "g has the wrong underlying type"); |
| |
| __underlying_type(f) h; |
| static_assert(is_same_type<char, decltype(h)>::value, |
| "h has the wrong type"); |
| |
| template <typename T> |
| struct underlying_type { |
| typedef __underlying_type(T) type; // expected-error {{only enumeration types}} |
| }; |
| |
| static_assert(is_same_type<underlying_type<f>::type, char>::value, |
| "f has the wrong underlying type in the template"); |
| |
| underlying_type<int>::type e; // expected-note {{requested here}} |
| |
| using uint = unsigned; |
| enum class foo : uint { bar }; |
| |
| static_assert(is_same_type<underlying_type<foo>::type, unsigned>::value, |
| "foo has the wrong underlying type"); |