1 // Copyright (C) 2014, Andrzej Krzemienski. 2 // 3 // Use, modification, and distribution is subject to the Boost Software 4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 5 // http://www.boost.org/LICENSE_1_0.txt) 6 // 7 // See http://www.boost.org/lib/optional for documentation. 8 // 9 // You are welcome to contact the author at: 10 // [email protected] 11 // 12 #include "boost/optional.hpp" 13 14 // 15 // THIS TEST SHOULD FAIL TO COMPILE 16 // 17 18 #if !defined(BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS) 19 test_implicit_conversion_to_bool()20bool test_implicit_conversion_to_bool() 21 { 22 boost::optional<int> opt; 23 return opt; 24 } 25 26 #else 27 # error "Test skipped: this compiler does not support explicit conversion operators." 28 #endif 29