1 // Copyright (C) 2018-2019 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 run { target c++14 } }
19 
20 #include <experimental/functional>
21 #include <testsuite_hooks.h>
22 
23 struct N {
operator ()N24   int operator()(int i) { if (i == 0) throw -1; return i; }
25 };
26 
27 void
test01()28 test01()
29 {
30   N n;
31   auto not_n = std::experimental::not_fn(n);
32   static_assert( !noexcept(not_n(1)), "can throw" );
33   VERIFY(not_n(1) == 0);
34   int exception = 0;
35   try {
36     not_n(0);
37   }
38   catch (int e) {
39     exception = e;
40   }
41   VERIFY(exception == -1);
42 }
43 
44 int
main()45 main()
46 {
47   test01();
48 }
49