DUNE
Distributed and Unified Numerics Environment
DUNE PDELab (git)
dune
common
std
no_unique_address.hh
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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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// vi: set et ts=4 sw=2 sts=2:
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// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
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// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
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#ifndef DUNE_COMMON_STD_NO_UNIQUE_ADDRESS_HH
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#define DUNE_COMMON_STD_NO_UNIQUE_ADDRESS_HH
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#if __has_include(<version>)
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#include <version>
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#endif
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// Provide the macro DUNE_NO_UNIQUE_ADDRESS that expands to [[no_unique_address]]
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// or similar depending on the compiler (version)
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#if _MSC_VER
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#if _MSC_VER >= 1929
// VS2019 v16.10 and later
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#define DUNE_NO_UNIQUE_ADDRESS [[msvc::no_unique_address]]
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#else
// no-op in MSVC v14x ABI
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#define DUNE_NO_UNIQUE_ADDRESS
/* [[no_unique_address]] */
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#endif
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#elif __has_cpp_attribute(no_unique_address) >= 201803L
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#define DUNE_NO_UNIQUE_ADDRESS [[no_unique_address]]
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#else
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#define DUNE_NO_UNIQUE_ADDRESS
/* [[no_unique_address]] */
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#endif
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#endif
// DUNE_COMMON_STD_NO_UNIQUE_ADDRESS_HH
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