1//===----------------------------------------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// Copyright (C) 2011 Vicente J. Botet Escriba
11//
12// Distributed under the Boost Software License, Version 1.0. (See accompanying
13// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
14
15// <boost/thread/future.hpp>
16// class packaged_task<R>
17
18// packaged_task();
19
20
21#define BOOST_THREAD_VERSION 4
22#if BOOST_THREAD_VERSION == 4
23#define BOOST_THREAD_DETAIL_SIGNATURE int()
24#else
25#define BOOST_THREAD_DETAIL_SIGNATURE int
26#endif
27
28#include <boost/thread/future.hpp>
29#include <boost/detail/lightweight_test.hpp>
30#include <string>
31
32int main()
33{
34 {
35 boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
36 BOOST_TEST(!p.valid());
37
38 }
39
40 return boost::report_errors();
41}
42
43

source code of boost/libs/thread/test/sync/futures/packaged_task/default_ctor_pass.cpp