| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // type_traits |
| |
| // is_copy_assignable |
| |
| #include <type_traits> |
| #include "test_macros.h" |
| |
| template <class T> |
| void test_is_copy_assignable() |
| { |
| static_assert(( std::is_copy_assignable<T>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert(( std::is_copy_assignable_v<T>), ""); |
| #endif |
| } |
| |
| template <class T> |
| void test_is_not_copy_assignable() |
| { |
| static_assert((!std::is_copy_assignable<T>::value), ""); |
| #if TEST_STD_VER > 14 |
| static_assert((!std::is_copy_assignable_v<T>), ""); |
| #endif |
| } |
| |
| class Empty |
| { |
| }; |
| |
| class NotEmpty |
| { |
| public: |
| virtual ~NotEmpty(); |
| }; |
| |
| union Union {}; |
| |
| struct bit_zero |
| { |
| int : 0; |
| }; |
| |
| struct A |
| { |
| A(); |
| }; |
| |
| class B |
| { |
| B& operator=(const B&); |
| }; |
| |
| struct C |
| { |
| void operator=(C&); // not const |
| }; |
| |
| int main() |
| { |
| test_is_copy_assignable<int> (); |
| test_is_copy_assignable<int&> (); |
| test_is_copy_assignable<A> (); |
| test_is_copy_assignable<bit_zero> (); |
| test_is_copy_assignable<Union> (); |
| test_is_copy_assignable<NotEmpty> (); |
| test_is_copy_assignable<Empty> (); |
| |
| #if TEST_STD_VER >= 11 |
| test_is_not_copy_assignable<const int> (); |
| test_is_not_copy_assignable<int[]> (); |
| test_is_not_copy_assignable<int[3]> (); |
| test_is_not_copy_assignable<B> (); |
| #endif |
| test_is_not_copy_assignable<void> (); |
| test_is_not_copy_assignable<C> (); |
| } |