| // Copyright (C) 2018-2023 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 <forward_list> |
| #include <testsuite_hooks.h> |
| |
| using test_type = std::forward_list<int>; |
| |
| void |
| test01() |
| { |
| test_type x{1, 2, 3, 4, 3, 2, 1}; |
| static_assert(std::is_same_v<decltype(x.remove(0)), test_type::size_type>); |
| test_type::size_type r = x.remove(0); |
| VERIFY( r == 0 ); |
| r = x.remove(1); |
| VERIFY( r == 2 ); |
| r = x.remove(1); |
| VERIFY( r == 0 ); |
| r = x.remove(4); |
| VERIFY( r == 1 ); |
| } |
| |
| void |
| test02() |
| { |
| int i = 0; |
| auto pred = [&i](int val) { return val == i; }; |
| test_type x{1, 2, 3, 4, 3, 2, 1}; |
| static_assert(std::is_same_v<decltype(x.remove_if(pred)), |
| test_type::size_type>); |
| test_type::size_type r = x.remove_if(pred); |
| VERIFY( r == 0 ); |
| i = 1; |
| r = x.remove_if(pred); |
| VERIFY( r == 2 ); |
| r = x.remove_if(pred); |
| VERIFY( r == 0 ); |
| i = 4; |
| r = x.remove_if(pred); |
| VERIFY( r == 1 ); |
| } |
| |
| int |
| main() |
| { |
| test01(); |
| test02(); |
| } |