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// { dg-do compile { target c++20 } }
//
// Copyright (C) 2019-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
#include <string_view>
#include <array>
constexpr char
test()
{
constexpr std::string_view hw("Hello, World!");
static_assert('H' == *hw.begin());
auto ch = hw[4];
static_assert('W' == *(hw.cbegin() + 7));
std::array<int, hw.size()> a2{{0,0,0,0,0,0,0,0,0,0,0,0,0}};
auto hwi = hw.begin();
auto hwe = hw.end();
auto a2i = a2.begin();
while (hwi != hwe)
*a2i++ = *hwi++;
return *(hw.cbegin() + 3);
}
void
run_test()
{
constexpr char ch = test();
}
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