| 1 | //===----------------------------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | // UNSUPPORTED: c++03, c++11, c++14, c++17, c++20 |
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| 10 | |
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| 11 | // template<class E> unexpected(E) -> unexpected<E>; |
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| 12 | |
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| 13 | #include <concepts> |
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| 14 | #include <expected> |
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| 15 | |
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| 16 | struct Foo{}; |
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| 17 | |
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| 18 | static_assert(std::same_as<decltype(std::unexpected(5)), std::unexpected<int>>); |
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| 19 | static_assert(std::same_as<decltype(std::unexpected(Foo{})), std::unexpected<Foo>>); |
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| 20 | static_assert(std::same_as<decltype(std::unexpected(std::unexpected<int>(5))), std::unexpected<int>>); |
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| 21 | |
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