boost::multiprecision::mpq_rational * int and boost::multiprecision::mpq_rational + double fail

operator_with_pod.cpp

/* This fails with VC++ 2019 and boost 1.78 */ 

#include <boost/multiprecision/gmp.hpp> 
#include <iostream>

typedef boost::multiprecision::mpq_rational Rational;

int main()
{

  Rational num(2) ,  den("2251799813685248");
  
  Rational q = num / den;
  std::cout << q << std::endl;

  int zero = 0;

  Rational rzero = q * zero;
  std::cout << rzero << std::endl;
  




  Rational rat(-0.375);
  double d = -0.625;

  std::cout << "rat : " << rat << std::endl;

  Rational sub = rat - d;
  std::cout << "sub : " << sub << std::endl;
  assert(rat != sub);
  
  return 0;
}