20 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++17, c++2010 11// Make sure std::bad_expected_access<E> inherits from std::bad_expected_access<void>.12 13#include <expected>14#include <type_traits>15 16struct Foo {};17 18static_assert(std::is_base_of_v<std::bad_expected_access<void>, std::bad_expected_access<int>>);19static_assert(std::is_base_of_v<std::bad_expected_access<void>, std::bad_expected_access<Foo>>);20