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- // Copyright (C) 2018-2022 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-options "-std=gnu++2a" }
- // { dg-do run { target c++2a } }
- #include <set>
- #include <testsuite_hooks.h>
- void
- test01()
- {
- std::set<int> m;
- VERIFY( ! m.contains( 0 ) );
- VERIFY( ! m.contains( 1 ) );
- m.insert(0);
- VERIFY( m.contains( 0 ) );
- VERIFY( ! m.contains( 1 ) );
- m.insert(1);
- VERIFY( m.contains( 0 ) );
- VERIFY( m.contains( 1 ) );
- }
- struct Zero { };
- bool operator<(Zero, int i) { return 0 < i; }
- bool operator<(int i, Zero) { return i < 0; }
- struct One { };
- bool operator<(One, int i) { return 1 < i; }
- bool operator<(int i, One) { return i < 1; }
- void
- test02()
- {
- std::set<int, std::less<>> m;
- VERIFY( ! m.contains( Zero{} ) );
- VERIFY( ! m.contains( One{} ) );
- m.insert(0);
- VERIFY( m.contains( Zero{} ) );
- VERIFY( ! m.contains( One{} ) );
- m.insert(1);
- VERIFY( m.contains( Zero{} ) );
- VERIFY( m.contains( One{} ) );
- }
- int
- main()
- {
- test01();
- test02();
- }
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