| // Copyright (C) 2014, Andrzej Krzemienski. |
| // |
| // Use, modification, and distribution is subject to the Boost Software |
| // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| // |
| // See http://www.boost.org/lib/optional for documentation. |
| // |
| // You are welcome to contact the author at: |
| // akrzemi1@gmail.com |
| // |
| #include "boost/optional.hpp" |
| |
| // |
| // THIS TEST SHOULD FAIL TO COMPILE |
| // |
| |
| struct U |
| {}; |
| |
| struct T |
| { |
| explicit T(U const&) {} |
| }; |
| |
| U get_U() { return U(); } |
| |
| |
| void test_verifying_the_implicit_conversion_to_bool() |
| { |
| boost::optional<T> opt; |
| opt.value_or_eval(get_U); |
| } |
| |
