libs/optional/test/optional_test_fail3a.cpp

   1 // Copyright (C) 2003, Fernando Luis Cacciola Carballal.
   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 //  fernando_cacciola@hotmail.com
  11 //
  12 #include<string>
  13
  14 #include "boost/optional.hpp"
  15
  16 //
  17 // THIS TEST SHOULD FAIL TO COMPILE
  18 //
  19 void test_no_unsupported_conversion()
  20 {
  21   boost::optional<int> opt1(1) ;
  22   boost::optional< std::string > opt2( opt1 ) ; // Cannot convert from "int" to "std::string"
  23 }
  24
  25