| // Copyright (C) 2020-2022 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-do run } |
| // { dg-additional-options "-pthread" { target pthread } } |
| |
| // Static init cannot detect recursion for gthreads targets without futexes |
| // (and the futex case can only detect it if __libc_single_threaded==true). |
| // { dg-skip-if "unsupported" { gthreads && { ! futex } } } |
| |
| // PR libstdc++/96817 |
| |
| #include <exception> |
| #include <stdlib.h> |
| |
| int init() |
| { |
| #if __has_include(<sys/single_threaded.h>) |
| // This deadlocks unless __libc_single_threaded is available in Glibc, |
| // because __cxa_guard_acquire uses __gthread_active_p and the |
| // multithreaded init can't detect recursion (see PR 97211). |
| static int i = init(); |
| #endif |
| return 0; |
| } |
| |
| void clean_terminate() { _Exit(0); } |
| |
| int |
| main () |
| { |
| std::set_terminate(clean_terminate); |
| init(); |
| } |