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1 | // (C) Copyright John Maddock 2005. |
2 | // Use, modification and distribution are subject to the | |
3 | // Boost Software License, Version 1.0. (See accompanying file | |
4 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
5 | ||
6 | #ifdef TEST_STD_HEADERS | |
7 | #include <functional> | |
8 | #else | |
9 | #include <boost/tr1/functional.hpp> | |
10 | #endif | |
11 | ||
12 | #include <boost/static_assert.hpp> | |
13 | #include <boost/type_traits/is_convertible.hpp> | |
14 | #include <boost/type_traits/is_same.hpp> | |
15 | ||
16 | int main() | |
17 | { | |
18 | typedef std::tr1::reference_wrapper<int> rr_type; | |
19 | typedef std::tr1::reference_wrapper<const int> crr_type; | |
20 | ||
21 | int i, j; | |
22 | rr_type r1 = std::tr1::ref(i); | |
23 | crr_type r2 = std::tr1::cref(i); | |
24 | r1 = std::tr1::ref(j); | |
25 | ||
26 | int& ref = r1.get(); | |
27 | ||
28 | BOOST_STATIC_ASSERT((::boost::is_convertible<rr_type, int&>::value)); | |
29 | BOOST_STATIC_ASSERT((::boost::is_convertible<crr_type, const int&>::value)); | |
30 | BOOST_STATIC_ASSERT((::boost::is_same<rr_type::type, int>::value)); | |
31 | BOOST_STATIC_ASSERT((::boost::is_same<crr_type::type, const int>::value)); | |
32 | } |