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()27 int 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