1 // { dg-do compile { target c++11 } }
2 
3 // Copyright (C) 2012-2018 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library.  This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10 
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 // GNU General Public License for more details.
15 
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3.  If not see
18 // <http://www.gnu.org/licenses/>.
19 
20 #include <type_traits>
21 #include <memory>
22 
23 using std::is_same;
24 using std::result_of;
25 using std::unique_ptr;
26 
27 // Taken from example in [meta.trans.other]
28 
29 typedef bool (&PF1)();
30 typedef short (*PF2)(long);
31 struct S {
32   operator PF2() const;
33   double operator()(char, int&);
34   void fn(long) const;
35   char data;
36 };
37 
38 typedef void (S::*PMF)(long) const;
39 typedef char S::*PMD;
40 
41 static_assert( is_same<result_of<S(int)>::type, short>::value, "!");
42 static_assert( is_same<result_of<S&(unsigned char, int&)>::type, double>::value, "!");
43 static_assert( is_same<result_of<PF1()>::type, bool>::value, "!");
44 static_assert( is_same<result_of<PMF(unique_ptr<S>, int)>::type, void>::value, "!");
45 static_assert( is_same<result_of<PMD(S)>::type, char&&>::value, "!");
46 static_assert( is_same<result_of<PMD(const S*)>::type, const char&>::value, "!");
47