Got to compile with modern C++ except one frickin bit: pVar ostream

[hopeseekr]

In pVar.cpp:

std::ostream& operator << (std::ostream& os, const pVar& v)
{
    return os << v.pVarData_ << std::endl;
}

It is beyond my C++ powers and nothing on Google helps.

An absolute huge error wall, but here's the top part:

/usr/include/boost/variant/detail/variant_io.hpp: In instantiation of ‘void boost::detail::variant::printer::operator()(const T&) const [with T = boost::logic::tribool; OStream = std::basic_ostream]’:
/usr/include/boost/variant/variant.hpp:1028:24: required from ‘typename boost::disable_if_c<(MoveSemantics && boost::is_same<Value2, Value2>::value), typename Visitor::result_type>::type boost::detail::variant::invoke_visitor<Visitor, MoveSemantics>::internal_visit(T&&, int) [with T = const boost::logic::tribool&; Visitor = boost::detail::variant::printer<std::basic_ostream >; bool MoveSemantics = false; typename boost::disable_if_c<(MoveSemantics && boost::is_same<Value2, Value2>::value), typename Visitor::result_type>::type = void]’
/usr/include/boost/variant/detail/visitation_impl.hpp:110:34: required from ‘typename Visitor::result_type boost::detail::variant::visitation_impl_invoke_impl(int, Visitor&, VoidPtrCV, T*, mpl_::true_) [with Visitor = boost::detail::variant::invoke_visitor<boost::detail::variant::printer<std::basic_ostream >, false>; VoidPtrCV = const void*; T = boost::logic::tribool; typename Visitor::result_type = void; mpl_::true_ = mpl_::bool_]’
/usr/include/boost/variant/detail/visitation_impl.hpp:150:41: required from ‘typename Visitor::result_type boost::detail::variant::visitation_impl_invoke(int, Visitor&, VoidPtrCV, T*, NoBackupFlag, int) [with Visitor = boost::detail::variant::invoke_visitor<boost::detail::variant::printer<std::basic_ostream >, false>; VoidPtrCV = const void*; T = boost::logic::tribool; NoBackupFlag = boost::variant<boost::logic::tribool, long int, rphp::CowPtr<__gmp_expr<_mpz_struct [1], mpz_struct [1]> >, rphp::CowPtr<gmp_expr<mpf_struct [1], mpf_struct [1]> >, std::cxx11::basic_string<char, std::char_traits, std::allocator >, rphp::pUStringP, rphp::CowPtrrphp::pHash, boost::shared_ptrrphp::pObject, boost::shared_ptrrphp::pResource, boost::shared_ptrrphp::pVar >::has_fallback_type; typename Visitor::result_type = void]’
/usr/include/boost/variant/detail/visitation_impl.hpp:231:5: required from ‘typename Visitor::result_type boost::detail::variant::visitation_impl(int, int, Visitor&, VoidPtrCV, mpl::false, NoBackupFlag, Which*, step0*) [with Which = mpl::int<0>; step0 = boost::detail::variant::visitation_impl_step<boost::mpl::l_iter<boost::mpl::l_item<mpl::long<10>, boost::logic::tribool, boost::mpl::l_item<mpl::long<9>, long int, boost::mpl::l_item<mpl::long<8>, rphp::CowPtr<gmp_expr<mpz_struct [1], mpz_struct [1]> >, boost::mpl::l_item<mpl::long<7>, rphp::CowPtr<gmp_expr<mpf_struct [1], mpf_struct [1]> >, boost::mpl::l_item<mpl::long<6>, std::cxx11::basic_string, boost::mpl::l_item<mpl::long<5>, rphp::pUStringP, boost::mpl::l_item<mpl::long<4>, rphp::CowPtrrphp::pHash, boost::mpl::l_item<mpl::long<3>, boost::shared_ptrrphp::pObject, boost::mpl::l_item<mpl::long<2>, boost::shared_ptrrphp::pResource, boost::mpl::l_item<mpl::long<1>, boost::shared_ptrrphp::pVar, boost::mpl::l_end> > > > > > > > > > >, boost::mpl::l_iterboost::mpl::l_end >; Visitor = boost::detail::variant::invoke_visitor<boost::detail::variant::printer<std::basic_ostream >, false>; VoidPtrCV = const void*; NoBackupFlag = boost::variant<boost::logic::tribool, long int, rphp::CowPtr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]> >, rphp::CowPtr<__gmp_expr<mpf_struct [1], mpf_struct [1]> >, std::cxx11::basic_string<char, std::char_traits, std::allocator >, rphp::pUStringP, rphp::CowPtrrphp::pHash, boost::shared_ptrrphp::pObject, boost::shared_ptrrphp::pResource, boost::shared_ptrrphp::pVar >::has_fallback_type; typename Visitor::result_type = void; mpl::false = mpl::bool]’
/usr/include/boost/variant/variant.hpp:2334:48: required from ‘static typename Visitor::result_type boost::variant<T0, TN>::internal_apply_visitor_impl(int, int, Visitor&, VoidPtrCV) [with Visitor = boost::detail::variant::invoke_visitor<boost::detail::variant::printer<std::basic_ostream >, false>; VoidPtrCV = const void*; T0 = boost::logic::tribool; TN = {long int, rphp::CowPtr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]> >, rphp::CowPtr<__gmp_expr<__mpf_struct [1], __mpf_struct [1]> >, std::_cxx11::basic_string<char, std::char_traits, std::allocator >, rphp::pUStringP, rphp::CowPtrrphp::pHash, boost::shared_ptrrphp::pObject, boost::shared_ptrrphp::pResource, boost::shared_ptrrphp::pVar}; typename Visitor::result_type = void]’
/usr/include/boost/variant/variant.hpp:2355:43: required from ‘typename Visitor::result_type boost::variant<T0, TN>::internal_apply_visitor(Visitor&) const [with Visitor = boost::detail::variant::invoke_visitor<boost::detail::variant::printer<std::basic_ostream >, false>; T0 = boost::logic::tribool; TN = {long int, rphp::CowPtr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]> >, rphp::CowPtr<__gmp_expr<__mpf_struct [1], __mpf_struct [1]> >, std::_cxx11::basic_string<char, std::char_traits, std::allocator >, rphp::pUStringP, rphp::CowPtrrphp::pHash, boost::shared_ptrrphp::pObject, boost::shared_ptrrphp::pResource, boost::shared_ptrrphp::pVar}; typename Visitor::result_type = void]’
/usr/include/boost/variant/variant.hpp:2401:44: required from ‘typename Visitor::result_type boost::variant<T0, TN>::apply_visitor(Visitor&) const & [with Visitor = boost::detail::variant::printer<std::basic_ostream >; T0 = boost::logic::tribool; TN = {long int, rphp::CowPtr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]> >, rphp::CowPtr<__gmp_expr<__mpf_struct [1], __mpf_struct [1]> >, std::__cxx11::basic_string<char, std::char_traits, std::allocator >, rphp::pUStringP, rphp::CowPtrrphp::pHash, boost::shared_ptrrphp::pObject, boost::shared_ptrrphp::pResource, boost::shared_ptrrphp::pVar}; typename Visitor::result_type = void]’
/usr/include/boost/variant/detail/variant_io.hpp:88:22: required from ‘std::basic_ostream<_CharT, _Traits>& boost::operator<<(std::basic_ostream<_CharT, _Traits>&, const boost::variant<U0, UN ...>&) [with E = char; T = std::char_traits; U0 = boost::logic::tribool; UN = {long int, rphp::CowPtr<__gmp_expr<__mpz_struct [1], __mpz_struct [1]> >, rphp::CowPtr<__gmp_expr<__mpf_struct [1], __mpf_struct [1]> >, std::_cxx11::basic_string<char, std::char_traits, std::allocator >, rphp::pUStringP, rphp::CowPtrrphp::pHash, boost::shared_ptrrphp::pObject, boost::shared_ptrrphp::pResource, boost::shared_ptrrphp::pVar}]’
/code/contribs/roadsend-php-raven/runtime/pVar.cpp:201:20: required from here
/usr/include/boost/variant/detail/variant_io.hpp:64:14: error: no match for ‘operator<<’ (operand types are ‘std::basic_ostream’ and ‘const boost::logic::tribool’)
64 | out << operand;
| ~~~~~^~~~~~~~~~
/usr/include/boost/variant/detail/variant_io.hpp:64:14: note: candidate: ‘operator<<(int, int)’ (built-in)
/usr/include/boost/variant/detail/variant_io.hpp:64:14: note: no known conversion for argument 2 from ‘const boost::logic::tribool’ to ‘int’
In file included from /usr/include/boost/range/iterator_range_io.hpp:32,
from /usr/include/boost/range/iterator_range.hpp:14,
from /code/contribs/roadsend-php-raven/include/rphp/pSourceTypes.h:28,
from /code/contribs/roadsend-php-raven/include/rphp/runtime/pRuntimeTypes.h:25,
from /code/contribs/roadsend-php-raven/include/rphp/runtime/pVar.h:24,
from /code/contribs/roadsend-php-raven/runtime/pVar.cpp:22:
/usr/include/c++/10.2.0/ostream:108:7: note: candidate: ‘std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__ostream_type& ()(std::basic_ostream<_CharT, _Traits>::__ostream_type&)) [with _CharT = char; _Traits = std::char_traits; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream]’
108 | operator<<(__ostream_type& (__pf)(__ostream_type&))
| ^~~~~~~~
/usr/include/c++/10.2.0/ostream:108:36: note: no known conversion for argument 1 from ‘const boost::logic::tribool’ to ‘std::basic_ostream::__ostream_type& ()(std::basic_ostream::__ostream_type&)’ {aka ‘std::basic_ostream& ()(std::basic_ostream&)’}
108 | operator<<(__ostream_type& (__pf)(__ostream_type&))
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/10.2.0/ostream:117:7: note: candidate: ‘std::basic_ostream<_CharT, _Traits>::__ostream_type& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>::__ios_type& ()(std::basic_ostream<_CharT, _Traits>::__ios_type&)) [with _CharT = char; _Traits = std::char_traits; std::basic_ostream<_CharT, _Traits>::__ostream_type = std::basic_ostream; std::basic_ostream<_CharT, _Traits>::__ios_type = std::basic_ios]’
117 | operator<<(__ios_type& (*__pf)(__ios_type&))
| ^~~~~~~~