1 // { dg-options "-std=gnu++14" } 2 // { dg-do compile } 3 4 // Copyright (C) 2013-2016 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 <experimental/optional> 22 #include <testsuite_hooks.h> 23 24 #include <string> 25 #include <memory> 26 main()27int main() 28 { 29 { 30 struct X 31 { 32 explicit X(int) {} 33 }; 34 std::experimental::optional<X> ox{42}; 35 std::experimental::optional<X> ox2 = 42; // { dg-error "conversion" } 36 std::experimental::optional<std::unique_ptr<int>> oup{new int}; 37 std::experimental::optional<std::unique_ptr<int>> oup2 = new int; // { dg-error "conversion" } 38 } 39 } 40