| //===----------------------------------------------------------------------===// |
| // |
| // 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, c++11, c++14 |
| // <optional> |
| |
| // T shall be an object type and shall satisfy the requirements of Destructible |
| |
| #include <optional> |
| |
| using std::optional; |
| |
| struct X |
| { |
| private: |
| ~X() {} |
| }; |
| |
| int main() |
| { |
| using std::optional; |
| { |
| // expected-error-re@optional:* 2 {{static_assert failed{{.*}} "instantiation of optional with a reference type is ill-formed}} |
| optional<int&> opt1; |
| optional<int&&> opt2; |
| } |
| { |
| // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a non-destructible type is ill-formed"}} |
| optional<X> opt3; |
| } |
| { |
| // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a non-object type is undefined behavior"}} |
| // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a non-destructible type is ill-formed}} |
| optional<void()> opt4; |
| } |
| { |
| // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a non-object type is undefined behavior"}} |
| // expected-error-re@optional:* {{static_assert failed{{.*}} "instantiation of optional with a non-destructible type is ill-formed}} |
| // expected-error@optional:* 1+ {{cannot form a reference to 'void'}} |
| optional<const void> opt4; |
| } |
| // FIXME these are garbage diagnostics that Clang should not produce |
| // expected-error@optional:* 0+ {{is not a base class}} |
| } |
