60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
// { dg-options "-std=gnu++2a" }
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// { dg-do run { target c++2a } }
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// Copyright (C) 2018-2021 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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#include <set>
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#include <testsuite_hooks.h>
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#ifndef __cpp_lib_erase_if
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# error "Feature-test macro for erase_if missing in <set>"
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#elif __cpp_lib_erase_if < 202002
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# error "Feature-test macro for erase_if has wrong value in <set>"
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#endif
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auto is_odd = [](const int i) { return i % 2 != 0; };
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void
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test01()
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{
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std::set<int> s{ 10, 11, 12, 14, 15, 17, 18, 19 };
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auto num = std::erase_if(s, is_odd);
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std::set<int> t{ 10, 12, 14, 18 };
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VERIFY( s == t );
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VERIFY( num == 4 );
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}
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void
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test02()
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{
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std::multiset<int> ms{ 20, 21, 22, 22, 23, 23, 24, 25 };
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auto num = std::erase_if(ms, is_odd);
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std::multiset<int> t{ 20, 22, 22, 24 };
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VERIFY( ms == t );
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VERIFY( num == 4 );
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}
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int
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main()
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{
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test01();
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test02();
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return 0;
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}
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