| // 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-do compile { target c++11 } } |
| // { dg-options "-O1 -g0" } |
| // { dg-final { scan-assembler-not "St15__exception_ptr13exception_ptr" } } |
| |
| #include <exception> |
| |
| void |
| test01() |
| { |
| // PR libstdc++/90295 |
| // Operations on null exception_ptr objects should be optimised away. |
| |
| std::exception_ptr p1; |
| if (!(p1 == nullptr)) |
| std::rethrow_exception(p1); |
| |
| std::exception_ptr p2 = p1; |
| if (!(p2 == p1)) |
| std::rethrow_exception(p2); |
| |
| p1 = p2; |
| if (p1 != p2) |
| std::rethrow_exception(p1); |
| |
| swap(p1, p2); |
| if (nullptr != p1) |
| std::rethrow_exception(p1); |
| |
| p1 = std::exception_ptr(nullptr); |
| if (!(p1 == p2)) |
| std::rethrow_exception(p1); |
| } |