1 // { dg-do compile }
2 // { dg-options "-std=gnu++17" }
3 
4 // Copyright (C) 2013-2020 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 // C++17 27.7, range access [iterator.range]
22 
23 #include <string_view>
24 
25 void
test01()26 test01()
27 {
28   std::wstring_view ws(L"Hello, World!");
29   std::begin(ws);
30   std::end(ws);
31   std::rbegin(ws);
32   std::rend(ws);
33 }
34 
35 void
test02()36 test02()
37 {
38   constexpr std::wstring_view ws(L"Hello, World!");
39   [[maybe_unused]] constexpr auto b = std::begin(ws);
40   [[maybe_unused]] constexpr auto e = std::end(ws);
41   [[maybe_unused]] constexpr auto cb = std::cbegin(ws);
42   [[maybe_unused]] constexpr auto ce = std::cend(ws);
43   [[maybe_unused]] constexpr auto rb = std::rbegin(ws);
44   [[maybe_unused]] constexpr auto re = std::rend(ws);
45   [[maybe_unused]] constexpr auto crb = std::crbegin(ws);
46   [[maybe_unused]] constexpr auto cre = std::crend(ws);
47 }
48