9c1125c121
As noted in PR 96817 this new test fails if the library is built without futexes. That's expected of course, but we might as well fail more obviously than a deadlock that eventually times out. libstdc++-v3/ChangeLog: * testsuite/18_support/96817.cc: Fail fail if the library is configured to not use futexes.
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
// Copyright (C) 2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// { dg-options "-pthread" }
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// { dg-do run { target *-*-linux-gnu } }
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// { dg-require-effective-target pthread }
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// PR libstdc++/96817
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#include <exception>
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#include <stdlib.h>
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#ifndef _GLIBCXX_HAVE_LINUX_FUTEX
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# error "This test requries futex support in the library"
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#endif
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int init()
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{
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#if __has_include(<sys/single_threaded.h>)
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// This deadlocks unless __libc_single_threaded is available in Glibc,
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// because __cxa_guard_acquire uses __gthread_active_p and the
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// multithreaded init can't detect recursion (see PR 97211).
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static int i = init();
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#endif
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return 0;
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}
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void clean_terminate() { _Exit(0); }
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int
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main ()
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{
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std::set_terminate(clean_terminate);
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init();
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}
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