#include "boost/optional.hpp"

#if BOOST_WORKAROUND( BOOST_INTEL_CXX_VERSION, <= 700) // Intel C++ 7.0

void helper ( boost::optional<int> ) ;

void test_explicit_constructor()

{

helper(3) ; // ERROR: Ctor is explicit.

}

#else

void test_explicit_constructor()

{

boost::optional<int> opt = 3 ; // ERROR: Ctor is explicit.

}

#endif