DUNE PDELab (git)

no_unique_address.hh
1// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2// vi: set et ts=4 sw=2 sts=2:
3// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
4// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
5#ifndef DUNE_COMMON_STD_NO_UNIQUE_ADDRESS_HH
6#define DUNE_COMMON_STD_NO_UNIQUE_ADDRESS_HH
7
8#if __has_include(<version>)
9#include <version>
10#endif
11
12// Provide the macro DUNE_NO_UNIQUE_ADDRESS that expands to [[no_unique_address]]
13// or similar depending on the compiler (version)
14
15#if _MSC_VER
16 #if _MSC_VER >= 1929 // VS2019 v16.10 and later
17 #define DUNE_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
18 #else // no-op in MSVC v14x ABI
19 #define DUNE_NO_UNIQUE_ADDRESS /* [[no_unique_address]] */
20 #endif
21#elif __has_cpp_attribute(no_unique_address) >= 201803L
22 #define DUNE_NO_UNIQUE_ADDRESS [[no_unique_address]]
23#else
24 #define DUNE_NO_UNIQUE_ADDRESS /* [[no_unique_address]] */
25#endif
26
27#endif // DUNE_COMMON_STD_NO_UNIQUE_ADDRESS_HH
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