libstdc++-v3/testsuite/20_util/optional/cons/trivial.cc

   1 // { dg-do compile { target c++17 }  }
   2
   3 // Copyright (C) 2018-2023 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 #include <optional>
  21
  22 struct X
  23 {
  24   ~X();
  25 };
  26
  27 struct Y
  28 {
  29   Y(const Y&) = default;
  30   Y(Y&&);
  31 };
  32
  33 struct Z
  34 {
  35   Z(const Z&);
  36   Z(Z&&) = default;
  37 };
  38
  39 static_assert(std::is_trivially_copy_constructible_v<std::optional<int>>);
  40 static_assert(std::is_trivially_move_constructible_v<std::optional<int>>);
  41 static_assert(!std::is_trivially_copy_constructible_v<std::optional<X>>);
  42 static_assert(!std::is_trivially_move_constructible_v<std::optional<X>>);
  43 static_assert(std::is_trivially_copy_constructible_v<std::optional<Y>>);
  44 static_assert(!std::is_trivially_move_constructible_v<std::optional<Y>>);
  45 static_assert(!std::is_trivially_copy_constructible_v<std::optional<Z>>);
  46 static_assert(std::is_trivially_move_constructible_v<std::optional<Z>>);