1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 // UNSUPPORTED: libcpp-no-concepts
11 // UNSUPPORTED: gcc-10
12 // XFAIL: msvc && clang
13 
14 // unique_ptr
15 
16 #include <optional>
17 
18 #include <iterator>
19 
20 static_assert(!std::indirectly_readable<std::optional<int> >);
21 static_assert(!std::indirectly_writable<std::optional<int>, int>);
22 static_assert(!std::weakly_incrementable<std::optional<int> >);
23