1
2// Copyright (C) 2006-2009, 2012 Alexander Nasonov
3// Copyright (C) 2012 Lorenzo Caminiti
4// Distributed under the Boost Software License, Version 1.0
5// (see accompanying file LICENSE_1_0.txt or a copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7// Home at http://www.boost.org/libs/scope_exit
8
9#include <boost/scope_exit.hpp>
10#include <boost/typeof/typeof.hpp>
11#include <boost/typeof/std/vector.hpp>
12#include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
13#include <boost/detail/lightweight_test.hpp>
14#include <vector>
15
16struct person {};
17BOOST_TYPEOF_REGISTER_TYPE(person)
18
19struct world_t;
20BOOST_TYPEOF_REGISTER_TYPE(world_t)
21
22//[world_void
23struct world_t {
24 std::vector<person> persons;
25 bool commit;
26} world; // Global variable.
27
28void add_person(person const& a_person) {
29 world.commit = false;
30 world.persons.push_back(x: a_person);
31
32 BOOST_SCOPE_EXIT(void) { // No captures.
33 if(!world.commit) world.persons.pop_back();
34 } BOOST_SCOPE_EXIT_END
35
36 // ...
37
38 world.commit = true;
39}
40//]
41
42int main(void) {
43 person p;
44 add_person(a_person: p);
45 BOOST_TEST(world.persons.size() == 1);
46 return boost::report_errors();
47}
48
49

source code of boost/libs/scope_exit/test/world_void.cpp