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// Copyright (C) 2019-2024 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/>.
// { dg-do compile { target c++20 } }
#include <algorithm>
#include <array>
#include <functional>
constexpr bool
test()
{
std::array<int, 12> ar1{{0, 1, 2, 3, 4, 5, 6, 6, 8, 9, 9, 11}};
std::array<int, 12> ar2{{0, 1, 2, 3, 4, 5, 6, 6, 8, 9, 9, 11}};
const auto out33 = std::unique(ar1.begin(), ar1.end());
const auto out44 = std::unique(ar2.begin(), ar2.end(), std::equal_to<int>());
return out33 == ar1.begin() + 10 && out44 == ar2.begin() + 10;
}
static_assert(test());
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