libstdc++-v3/testsuite/20_util/shared_ptr/cons/unique_ptr_deleter_ref_2.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-effective-target hosted }
   3
   4 // Copyright (C) 2008-2022 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 // 20.7.12.2 Template class shared_ptr [util.smartptr.shared]
  22
  23 #include <memory>
  24 #include <functional>
  25 #include <testsuite_hooks.h>
  26
  27 struct A { };
  28
  29 struct D {
  30     typedef void result_type;
  31     void operator()(A* p) { delete p;  ++count; }
  32     int count;
  33 };
  34
  35
  36 // 20.7.12.2.1 shared_ptr constructors [util.smartptr.shared.const]
  37
  38 // Construction from unique_ptr
  39 // See: http://gcc.gnu.org/ml/libstdc++/2008-09/msg00070.html.
  40 int
  41 test01()
  42 {
  43   D d;
  44   std::unique_ptr<A, D&> p1(new A, d);
  45
  46   std::shared_ptr<A> p2(std::move(p1));
  47
  48   typedef std::reference_wrapper<D> D2;
  49   D2* p3 = std::get_deleter<D2>(p2);
  50
  51 #if __cpp_rtti
  52   VERIFY( p3 != 0 );
  53   VERIFY( &p3->get() == &d );
  54 #else
  55   VERIFY( p3 == 0 ); // Always returns nullptr without RTTI.
  56 #endif
  57
  58   return 0;
  59 }
  60
  61 int
  62 main()
  63 {
  64   test01();
  65   return 0;
  66 }