| // Copyright (C) 2020-2021 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 compile { target c++2a } } |
| |
| #include <iterator> |
| |
| using std::projected; |
| using std::identity; |
| using std::indirect_unary_predicate; |
| |
| template<typename T, |
| indirect_unary_predicate<projected<T*, identity>> Pred> |
| constexpr void |
| all_of(T*, Pred) |
| { } |
| |
| void |
| test01() |
| { |
| // PR libstdc++/92894 |
| struct X { }; |
| X x; |
| all_of(&x, [](X&) { return false; }); |
| } |
| |
| template<class R, class Proj = identity, |
| indirect_unary_predicate<projected<R, Proj>> Pred> |
| constexpr void |
| find_if(R, Pred, Proj = {}) |
| { } |
| |
| void |
| test02() |
| { |
| // PR 94241 |
| struct s { int m; }; |
| s r[] = { s{0}, s{1}, s{2}, s{3} }; |
| find_if(r, [](auto const) { return true; }); |
| } |