1// { dg-do run { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } } 2// { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } } 3// { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } } 4// { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-darwin* } } 5// { dg-require-cstdint "" } 6// { dg-require-gthreads "" } 7 8// Copyright (C) 2014-2015 Free Software Foundation, Inc. 9// 10// This file is part of the GNU ISO C++ Library. This library is free 11// software; you can redistribute it and/or modify it under the 12// terms of the GNU General Public License as published by the 13// Free Software Foundation; either version 3, or (at your option) 14// any later version. 15 16// This library is distributed in the hope that it will be useful, 17// but WITHOUT ANY WARRANTY; without even the implied warranty of 18// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19// GNU General Public License for more details. 20 21// You should have received a copy of the GNU General Public License along 22// with this library; see the file COPYING3. If not see 23// <http://www.gnu.org/licenses/>. 24 25#include <thread> 26#include <memory> 27#include <testsuite_hooks.h> 28 29struct leaddock 30{ 31 ~leaddock(); 32}; 33 34std::shared_ptr<leaddock> global; 35 36leaddock::~leaddock() 37{ 38 // If this destructor is called "inside" an atomic operation on global it 39 // will deadlock, so this checks that the atomic_store is done atomically. 40 auto copy = std::atomic_load(&global); 41 VERIFY( !copy ); 42} 43 44void f() 45{ 46 std::atomic_store(&global, std::make_shared<leaddock>()); 47 std::atomic_store(&global, {}); 48} 49 50int main() 51{ 52 std::thread{ f }.join(); 53} 54