// Copyright 2018 James E. King III. 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)

#include <boost/logic/tribool.hpp>

int main(int, char*[])
{
  using boost::logic::tribool;

  tribool f;       // false
  tribool t(true); // true

  return f < t; // expect to see: error: invalid operands to binary expression ('boost::logic::tribool' and 'boost::logic::tribool')
}