| // { dg-do compile { target c++11 } } |
| // { dg-additional-options "-pthread" { target pthread } } |
| |
| // Copyright (C) 2014-2021 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/>. |
| |
| // libstdc++/60497 |
| |
| #include <mutex> |
| #include <memory> |
| #include <functional> |
| |
| struct A; |
| template<typename T> struct B { T t; }; |
| |
| using UP = std::unique_ptr<B<A>>; |
| |
| void f(UP&) { } |
| |
| void g(UP& p) |
| { |
| std::once_flag o; |
| std::call_once(o, f, std::ref(p)); |
| } |
