1 // Copyright (C) 2011-2016 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 }
19 // { dg-options "-std=gnu++11" }
20
21 #include <functional>
22
23 struct X
24 {
operator ()X25 int operator()() const { return 0; }
operator ()X26 int operator()() volatile { return 1; }
operator ()X27 int operator()() const volatile { return 2; }
operator ()X28 void operator()() { };
29 };
30
test01()31 void test01()
32 {
33 static_assert( std::is_placeholder<decltype(std::placeholders::_1)>::value,
34 "decltype(_1) is a placeholder type" );
35
36 const auto b0 = std::bind(X());
37 static_assert( std::is_bind_expression<decltype(b0)>::value,
38 "const-qualified wrapper is a bind expression" );
39
40 volatile auto b1 = std::bind(X());
41 static_assert( std::is_bind_expression<decltype(b1)>::value,
42 "volatile-qualified wrapper is a bind expression" );
43
44 const volatile auto b2 = std::bind(X());
45 static_assert( std::is_bind_expression<decltype(b2)>::value,
46 "const-volatile-qualified wrapper is a bind expression" );
47
48 const auto b3 = std::bind<int>(X());
49 static_assert( std::is_bind_expression<decltype(b3)>::value,
50 "const-qualified wrapper is a bind expression" );
51
52 volatile auto b4 = std::bind<int>(X());
53 static_assert( std::is_bind_expression<decltype(b4)>::value,
54 "volatile-qualified wrapper is a bind expression" );
55
56 const volatile auto b5 = std::bind<int>(X());
57 static_assert( std::is_bind_expression<decltype(b5)>::value,
58 "const-volatile-qualified wrapper is a bind expression" );
59 }
60
main()61 int main()
62 {
63 test01();
64 return 0;
65 }
66