| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03 |
| |
| // type_traits |
| |
| // extension |
| |
| // template <typename _Tp> struct __has_operator_addressof |
| |
| |
| #include <type_traits> |
| |
| |
| struct A |
| { |
| }; |
| |
| struct B |
| { |
| constexpr B* operator&() const; |
| }; |
| |
| struct D; |
| |
| struct C |
| { |
| template <class U> |
| D operator,(U&&); |
| }; |
| |
| struct E |
| { |
| constexpr C operator&() const; |
| }; |
| |
| struct F {}; |
| constexpr F* operator&(F const &) { return nullptr; } |
| |
| struct G {}; |
| constexpr G* operator&(G &&) { return nullptr; } |
| |
| struct H {}; |
| constexpr H* operator&(H const &&) { return nullptr; } |
| |
| struct J |
| { |
| constexpr J* operator&() const &&; |
| }; |
| |
| |
| int main() |
| { |
| static_assert(std::__has_operator_addressof<int>::value == false, ""); |
| static_assert(std::__has_operator_addressof<A>::value == false, ""); |
| static_assert(std::__has_operator_addressof<B>::value == true, ""); |
| static_assert(std::__has_operator_addressof<E>::value == true, ""); |
| static_assert(std::__has_operator_addressof<F>::value == true, ""); |
| static_assert(std::__has_operator_addressof<G>::value == true, ""); |
| static_assert(std::__has_operator_addressof<H>::value == true, ""); |
| static_assert(std::__has_operator_addressof<J>::value == true, ""); |
| } |