46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
// Copyright (C) 2018-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-options "-std=gnu++17" }
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// { dg-do compile { target c++17 } }
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#include <functional>
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void
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test01()
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{
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int i = 0;
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std::reference_wrapper rw0(i);
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[[maybe_unused]] std::reference_wrapper<int>* p0 = &rw0;
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[[maybe_unused]] int& r0 = rw0;
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std::reference_wrapper rw1(rw0);
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[[maybe_unused]] std::reference_wrapper<int>* p1 = &rw1;
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[[maybe_unused]] int& r1 = rw1;
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}
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void
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test02()
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{
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const int i = 0;
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std::reference_wrapper rw0(i);
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[[maybe_unused]] std::reference_wrapper<const int>* p0 = &rw0;
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std::reference_wrapper rw1(rw0);
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[[maybe_unused]] std::reference_wrapper<const int>* p1 = &rw1;
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}
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