// { dg-options "-std=gnu++14" } // { dg-do run } // Copyright (C) 2013-2014 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a moved_to of the GNU General Public License along // with this library; see the file COPYING3. If not see // . #include #include struct value_type { int i; }; int main() { std::experimental::optional o { value_type { 51 } }; value_type fallback { 3 }; VERIFY( o.value_or(fallback).i == 51 ); VERIFY( o.value_or(fallback).i == (*o).i ); }