libstdc++-v3/testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile }
   3 // { dg-skip-if "" { *-*-* } { "-D_GLIBCXX_PROFILE" } }
   4
   5 // Copyright (C) 2016-2019 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <array>
  23
  24 // Not swappable, and pair not swappable via the generic std::swap.
  25 struct C { };
  26 void swap(C&, C&) = delete;
  27
  28 static_assert( !std::is_swappable_v<std::array<C, 42>> );
  29
  30 // Not swappable, and pair not swappable via the generic std::swap.
  31 struct D { D(D&&) = delete; };
  32
  33 static_assert( !std::is_swappable_v<std::array<D, 42>> );
  34