85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
// { dg-do run { target c++11 } }
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// { dg-options "-g -O0" }
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// Copyright (C) 2012-2019 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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// 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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// 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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#include <memory>
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#include <iostream>
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template<class T>
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void
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placeholder(const T &s)
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{
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std::cout << s;
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}
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template<class T>
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void
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use(const T &p)
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{
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placeholder(&p);
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}
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struct deleter { void operator()(int*) {} };
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std::shared_ptr<int> make(uintptr_t p)
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{
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return std::shared_ptr<int>(reinterpret_cast<int*>(p), deleter());
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}
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int
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main()
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{
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typedef std::shared_ptr<int> shared;
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typedef std::weak_ptr<int> weak;
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shared esp;
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// { dg-final { note-test esp "std::shared_ptr<int> (empty) = {get() = 0x0}" } }
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weak ewp1;
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// { dg-final { note-test ewp1 "std::weak_ptr<int> (empty) = {get() = 0x0}" } }
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weak ewp2 = esp;
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// { dg-final { note-test ewp2 "std::weak_ptr<int> (empty) = {get() = 0x0}" } }
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shared sp1 = make(0x12345678);
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shared sp2 = sp1;
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// { dg-final { note-test sp1 "std::shared_ptr<int> (use count 2, weak count 0) = {get() = 0x12345678}" } }
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shared sp3 = make(0x12344321);
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weak sp4 = sp3;
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weak wp1 = sp3;
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// { dg-final { note-test wp1 "std::weak_ptr<int> (use count 1, weak count 2) = {get() = 0x12344321}" } }
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shared sp5 = make(0x56788765);
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weak wp2 = sp5;
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sp5.reset();
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// { dg-final { note-test wp2 "std::weak_ptr<int> (expired, weak count 1) = {get() = 0x56788765}" } }
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placeholder(""); // Mark SPOT
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use(esp);
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use(ewp1);
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use(ewp2);
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use(sp1);
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use(wp1);
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use(wp2);
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std::cout << "\n";
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return 0;
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}
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// { dg-final { gdb-test SPOT } }
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