1// { dg-options "-std=gnu++11" } 2 3// Copyright (C) 2010-2015 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 3, or (at your option) 9// any later version. 10 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20// 20.9.11.2 Class template shared_ptr [util.smartptr.shared] 21 22#include <memory> 23#include <cstddef> 24#include <testsuite_hooks.h> 25#include <testsuite_allocator.h> 26 27// 20.9.11.2.1 shared_ptr constructors [util.smartptr.shared.const] 28 29// Construction from nullptr 30 31struct deleter 32{ 33 int count; 34 deleter() : count(0) { } 35 void operator()(std::nullptr_t) { ++count; } 36 void operator()(int*) const { throw "wrong type passed to deleter"; } 37}; 38 39void 40test01() 41{ 42 bool test __attribute__((unused)) = true; 43 44 std::shared_ptr<int> p = nullptr; 45 VERIFY( p.get() == nullptr ); 46 VERIFY( p.use_count() == 0 ); 47 48} 49 50void 51test02() 52{ 53 bool test __attribute__((unused)) = true; 54 55 deleter d; 56 std::shared_ptr<int> p(nullptr, std::ref(d)); 57 VERIFY( p.get() == nullptr ); 58 VERIFY( p.use_count() == 1 ); 59 60 p = nullptr; 61 VERIFY( p.use_count() == 0 ); 62 VERIFY( d.count == 1 ); 63} 64 65 66void 67test03() 68{ 69 bool test __attribute__((unused)) = true; 70 71 deleter d; 72 __gnu_test::tracker_allocator<int> a; 73 std::shared_ptr<int> p(nullptr, std::ref(d), a); 74 VERIFY( p.get() == nullptr ); 75 VERIFY( p.use_count() == 1 ); 76 77 p = nullptr; 78 VERIFY( p.use_count() == 0 ); 79 VERIFY( d.count == 1 ); 80 81 typedef __gnu_test::tracker_allocator_counter c; 82 VERIFY( c::get_destruct_count() == c::get_construct_count() ); 83 VERIFY( c::get_deallocation_count() == c::get_allocation_count() ); 84} 85 86int 87main() 88{ 89 test01(); 90 test02(); 91 test03(); 92 return 0; 93} 94