libstdc++-v3/testsuite/20_util/shared_ptr/cons/lwg2802.cc

   1 // Copyright (C) 2017-2024 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // { dg-do compile { target c++11 } }
  19 // { dg-require-effective-target hosted }
  20
  21 #include <memory>
  22
  23 // LWG 2802. shared_ptr constructor requirements for a deleter
  24
  25 struct D
  26 {
  27   D() { }
  28   D(D&&) { }
  29   void operator()(int* p) const { delete p; }
  30 };
  31
  32 std::allocator<int> a;
  33
  34 std::shared_ptr<int> s1((int*)nullptr, D());
  35 std::shared_ptr<int> s2((int*)nullptr, D(), a);
  36 std::shared_ptr<int> s3(nullptr, D());
  37 std::shared_ptr<int> s4(nullptr, D(), a);
  38
  39 void test01()
  40 {
  41   s1.reset((int*)nullptr, D());
  42   s1.reset((int*)nullptr, D(), a);
  43 }
  44
  45 struct D2 final
  46 {
  47   D2() { }
  48   D2(D2&&) { }
  49   void operator()(int* p) const { delete p; }
  50 };
  51
  52 std::shared_ptr<int> s5(nullptr, D2());