libstdc++-v3/testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile }
   3
   4 // Copyright (C) 2016-2018 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 #include <memory>
  22
  23 // Not swappable, and unique_ptr not swappable via the generic std::swap.
  24 struct C {
  25   void operator()(void*) const { }
  26 };
  27 void swap(C&, C&) = delete;
  28
  29 static_assert( !std::is_swappable_v<std::unique_ptr<int, C>> );
  30
  31 // Not swappable, and unique_ptr not swappable via the generic std::swap.
  32 struct D {
  33   D(D&&) = delete;
  34   void operator()(void*) const { }
  35 };
  36
  37 static_assert( !std::is_swappable_v<std::unique_ptr<int, D>> );
  38