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

   1 // { dg-options "-std=gnu++17" }
   2 // { dg-do compile { target c++17 }  }
   3
   4 // Copyright (C) 2018-2021 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 <optional>
  22
  23 struct X
  24 {
  25   ~X();
  26 };
  27
  28 struct Y
  29 {
  30   Y(const Y&) = default;
  31   Y(Y&&);
  32 };
  33
  34 struct Z
  35 {
  36   Z(const Z&);
  37   Z(Z&&) = default;
  38 };
  39
  40 static_assert(std::is_trivially_copy_constructible_v<std::optional<int>>);
  41 static_assert(std::is_trivially_move_constructible_v<std::optional<int>>);
  42 static_assert(!std::is_trivially_copy_constructible_v<std::optional<X>>);
  43 static_assert(!std::is_trivially_move_constructible_v<std::optional<X>>);
  44 static_assert(std::is_trivially_copy_constructible_v<std::optional<Y>>);
  45 static_assert(!std::is_trivially_move_constructible_v<std::optional<Y>>);
  46 static_assert(!std::is_trivially_copy_constructible_v<std::optional<Z>>);
  47 static_assert(std::is_trivially_move_constructible_v<std::optional<Z>>);