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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2024- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
#pragma once
namespace openvpn {
// Replace std::unreachable, only available in C++23
// Based on https://en.cppreference.com/w/cpp/utility/unreachable
[[noreturn]] inline void unreachable()
{
// Uses compiler specific extensions if possible.
// Even if no extension is used, undefined behavior is still raised by
// an empty function body and the noreturn attribute.
#if defined(__GNUC__)
__builtin_unreachable();
#elif defined(_MSC_VER)
__assume(false);
#endif
}
} // namespace openvpn
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