42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
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//===----------------------------------------------------------------------===//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
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// template<class E2>
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// friend constexpr bool operator==(const unexpected& x, const unexpected<E2>& y);
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//
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// Mandates: The expression x.error() == y.error() is well-formed and its result is convertible to bool.
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//
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// Returns: x.error() == y.error().
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#include <cassert>
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#include <concepts>
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#include <expected>
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#include <utility>
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struct Error{
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int i;
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friend constexpr bool operator==(const Error&, const Error&) = default;
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};
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constexpr bool test() {
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std::unexpected<Error> unex1(Error{2});
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std::unexpected<Error> unex2(Error{3});
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std::unexpected<Error> unex3(Error{2});
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assert(unex1 == unex3);
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assert(unex1 != unex2);
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assert(unex2 != unex3);
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return true;
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}
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int main(int, char**) {
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test();
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static_assert(test());
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return 0;
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}
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