1// Copyright (C) 2023 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include <QtCore/q23utility.h>
5
6QT_BEGIN_NAMESPACE
7
8#define CHECK2(cvref_in, cvref_out) \
9 static_assert(std::is_same_v< \
10 decltype(q23::forward_like<int cvref_in >(std::declval<long&>())), \
11 long cvref_out \
12 >, "oops: cvref '" #cvref_in "' doesn't work") \
13 /* end */
14#define CHECK(cvref) CHECK2(cvref, cvref)
15CHECK2(/**/, &&);
16CHECK(&);
17CHECK(&&);
18CHECK2(const, const &&);
19CHECK(const &);
20CHECK(const &&);
21// volatile is not supported
22#undef CHECK
23#undef CHECK2
24
25QT_END_NAMESPACE
26

source code of qtbase/src/corelib/global/q23utility.cpp