1 // Copyright (C) 2011-2019 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
13
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
17
18 // { dg-do compile { target c++11 } }
19
20 #include <functional>
21
22 struct X
23 {
operator ()X24 int operator()() const { return 0; }
operator ()X25 int operator()() volatile { return 1; }
operator ()X26 int operator()() const volatile { return 2; }
operator ()X27 void operator()() { };
28 };
29
test01()30 void test01()
31 {
32 static_assert( std::is_placeholder<decltype(std::placeholders::_1)>::value,
33 "decltype(_1) is a placeholder type" );
34
35 const auto b0 = std::bind(X());
36 static_assert( std::is_bind_expression<decltype(b0)>::value,
37 "const-qualified wrapper is a bind expression" );
38
39 volatile auto b1 = std::bind(X());
40 static_assert( std::is_bind_expression<decltype(b1)>::value,
41 "volatile-qualified wrapper is a bind expression" );
42
43 const volatile auto b2 = std::bind(X());
44 static_assert( std::is_bind_expression<decltype(b2)>::value,
45 "const-volatile-qualified wrapper is a bind expression" );
46
47 const auto b3 = std::bind<int>(X());
48 static_assert( std::is_bind_expression<decltype(b3)>::value,
49 "const-qualified wrapper is a bind expression" );
50
51 volatile auto b4 = std::bind<int>(X());
52 static_assert( std::is_bind_expression<decltype(b4)>::value,
53 "volatile-qualified wrapper is a bind expression" );
54
55 const volatile auto b5 = std::bind<int>(X());
56 static_assert( std::is_bind_expression<decltype(b5)>::value,
57 "const-volatile-qualified wrapper is a bind expression" );
58 }
59
main()60 int main()
61 {
62 test01();
63 return 0;
64 }
65